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写真a

ナカムラ タケシ
中村 健
Takeshi Nakamura
所属
医学研究科 医科学専攻 リハビリテーション科学 主任教授
医学部 医学科
職名
主任教授
プロフィール
リハビリテーション医学を専門としており、障害医学、運動生理学、環境生理学、循環調節、再生医療におけるリハビリテーションなどをテーマとして研究を進めている。
外部リンク

学位

  • 博士(医学) ( 和歌山県立医科大学 )

研究キーワード

  • 自律神経

  • 急性期リハビリテーション医療

  • リハビリテーション医学

  • 中枢性循環調節

  • パラスポーツ

  • 運動負荷

  • 脊髄損傷

  • 運動療法

  • 運動生理学

  • 周術期リハビリテーション医療

研究分野

  • ライフサイエンス / リハビリテーション科学

  • ライフサイエンス / スポーツ科学

論文

  • Effect of long-term rehabilitation on takotsubo syndrome-induced severe intensive care unit-acquired weakness: a case report. 査読

    Yoshitaka Shimizu, Ryoko Someya, Yugo Minamimoto, Akinobu Nemoto, Takeshi Nakamura

    Journal of physical therapy science   36 ( 11 )   750 - 755   2024年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    [Purpose] To examine the effectiveness of acute and outpatient cardiac rehabilitation for severe intensive care unit (ICU)-acquired weakness. [Participant and Methods] A 79-year-old woman, diagnosed with takotsubo syndrome. A percutaneous catheter-based transvalvular left ventricular assist device was used from day 2 to day 8, extracorporeal membrane oxygenation from day 3 to day 9, and inotropic support from day 1 to day 15. The patient was weaned from the ventilator on day 59, transferred to another hospital on day 67, and discharged home on day 152. From days 16 to 65 and 177 to 262, she underwent inpatient rehabilitation and outpatient cardiac rehabilitation, respectively, at our hospital. [Results] After inpatient rehabilitation at our hospital, her Medical Research Council score improved from 16 to 46. In outpatient cardiac rehabilitation, her 6-minute walk distance improved from 385 to 473 m, and her Kansas City Cardiomyopathy Questionnaire score improved from 88.6 to 100. [Conclusion] The results suggest that acute rehabilitation can effectively improve muscle strength, whereas outpatient cardiac rehabilitation can effectively improve exercise tolerance and quality of life in patients with severe ICU-acquired weakness.

    DOI: 10.1589/jpts.36.750

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  • White matter microstructural alterations in patients with neuropathic pain after spinal cord injury: a diffusion tensor imaging study 査読

    Dong Dong, Koichi Hosomi, Nobuhiko Mori, Yoshi-ichiro Kamijo, Yohei Furotani, Daisuke Yamagami, Yu-ichiro Ohnishi, Yoshiyuki Watanabe, Takeshi Nakamura, Fumihiro Tajima, Haruhiko Kishima, Youichi Saitoh

    Frontiers in Neurology   14   2023年8月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Frontiers Media SA  

    Background

    Through contrastive analysis, we aimed to identify the white matter brain regions that show microstructural changes in patients with neuropathic pain (NP) after spinal cord injury (SCI).

    Methods

    We categorized patients with SCI into NP (n = 30) and non-NP (n = 15) groups. We extracted diffusion tensor maps of fractional anisotropy (FA) and mean (MD), axial (AD), and radial (RD) diffusivity. A randomization-based method in tract-based spatial statistics was used to perform voxel-wise group comparisons among the FA, MD, AD, and RD for nonparametric permutation tests.

    Results

    Atlas-based analysis located significantly different regions (p < 0.05) in the appointed brain atlas. Compared to the non-NP group, the NP group showed higher FA in the posterior body and splenium of the corpus callosum and higher AD in the corpus callosum, internal capsule, corona radiata, posterior thalamic radiation, sagittal stratum, external capsule, cingulum, fornix/stria terminalis, superior longitudinal fasciculus, and uncinate fasciculus.

    Conclusion

    The results demonstrated that compared with the non-NP group, NP pathogenesis after SCI was potentially related to higher values in FA that are associated with microstructural changes in the posterior body and splenium of the corpus callosum, which could be regarded as central sensitization or network hyperexcitability.

    DOI: 10.3389/fneur.2023.1241658

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  • Association between sarcopenia and exercise capacity in patients with pulmonary hypertension without left heart disease. 査読 国際誌

    Mina Nakayama, Masaaki Konishi, Teruyasu Sugano, Masatsugu Okamura, Masaomi Gohbara, Kiwamu Iwata, Naoki Nakayama, Eiichi Akiyama, Naohiro Komura, Manabu Nitta, Noriyuki Kawaura, Tomoaki Ishigami, Kiyoshi Hibi, Toshiyuki Ishikawa, Takeshi Nakamura, Kouichi Tamura, Kazuo Kimura

    International journal of cardiology   387   131115 - 131115   2023年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Pulmonary hypertension (PH) has recently been described as a complex clinical syndrome affecting multiple organ systems, including the heart, lungs, and skeletal muscle, each of which plays an important role in exercise capacity. However, the relationship between exercise capacity and skeletal muscle abnormalities in patients with PH has not been fully elucidated. METHODS: We retrospectively analysed the exercise capacity and measures of skeletal muscle of 107 patients with PH without left heart disease (mean age 63 ± 15 years, 32.7% males, n = 30/6/66/5 in the clinical classification Group 1/3/4/5). RESULTS: Sarcopenia, low appendicular skeletal muscle mass index, low grip strength, and slow gait speed, determined by international criteria, were found in 15 (14.0%), 16 (15.0%), 62 (57.9%), and 41 (38.3%) patients, respectively. The mean 6-min walk distance of all patients was 436 ± 134 m and was independently associated with sarcopenia (standardised β = -0.292, p < 0.001). All patients with sarcopenia showed reduced exercise capacity defined as 6-min walk distance < 440 m. Multivariable logistic regression analysis showed that each of the components of sarcopenia was associated with reduced exercise capacity (adjusted odds ratio and 95% confidence interval of appendicular skeletal muscle mass index: 0.39 [0.24-0.63] per 1 kg/m2, p = 0.006, grip strength: 0.83 [0.74-0.94] per 1 kg, p = 0.003, and gait speed: 0.31 [0.18-0.51] per 0.1 m/s, p < 0.001). CONCLUSIONS: Sarcopenia and its components are associated with reduced exercise capacity in patients with PH. A multifaceted evaluation may be important in the management of reduced exercise capacity in patients with PH.

    DOI: 10.1016/j.ijcard.2023.06.006

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  • Impact of grip strength and gait speed on exercise tolerance in patients with pulmonary hypertension without left heart disease. 査読

    Masatsugu Okamura, Masaaki Konishi, Yusuke Saigusa, Shuji Ando, Mina Nakayama, Naohiro Komura, Teruyasu Sugano, Kouichi Tamura, Takeshi Nakamura

    Heart and vessels   37 ( 11 )   1928 - 1936   2022年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Patients with pulmonary hypertension (PH) suffer from poor exercise tolerance due to impaired oxygenation and/or reduced cardiac output. However, the relationship between exercise tolerance and physical function remains unclear. The purpose of this study was to investigate the relationship between exercise tolerance and physical function in patients with PH. A total of 94 patients without left heart disease (61.3 ± 14.7 years old, 69.1% females, 22/8/60/4 patients with Group 1/3/4/5 PH) were retrospectively analysed. Physical function was measured using muscle strength (grip strength, knee extension muscle strength), balance function (one-leg standing time), and gait speed within 7 days of cardiac catheterization. Exercise tolerance was measured using the 6-min walking distance (6-MWD). A total of 194 6-MWD measurements and the corresponding physical function were evaluated in 94 patients. Multivariable linear regression analysis using adaptive-LASSO methods indicated that the World Health Organization functional classification, pulmonary vascular resistance, mixed venous oxygen saturation, grip strength, and gait speed were independently associated with the 6-MWD. Low grip strength (< 28 kg for males and < 18 kg for females; adjusted odds ratio and 95% confidence interval: 2.06 [1.30-3.26], p = 0.002), and slow gait speed (< 1.0 m/s for both sexes; 13.33 [3.61-49.19], p < 0.001) were independent predictors of poor exercise tolerance (6-MWD < 440 m) in a logistic regression analysis. Grip strength and gait speed as measures of physical function, pulmonary vascular resistance, and mixed venous oxygen saturation were associated with exercise tolerance in patients with PH without left heart disease.

    DOI: 10.1007/s00380-022-02091-2

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  • Early mobilization in spinal cord injury promotes changes in microglial dynamics and recovery of motor function. 査読 国際誌

    Kohta Asano, Takeshi Nakamura, Kengo Funakoshi

    IBRO neuroscience reports   12   366 - 376   2022年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    In the acute phase of spinal cord injury, the initial injury triggers secondary damage due to neuroinflammation, leading to the formation of cavities and glial scars that impair nerve regeneration. Following injuries to the central nervous system, early mobilization promotes the recovery of physical function. Therefore, in the present study, we investigated the effects of early mobilization on motor function recovery and neuroinflammation in rats. Early mobilization of rats with complete spinal cord transection resulted in good recovery of hindlimb motor function after 3 weeks. At 1 week after spinal cord injury, the early-mobilized rats expressed fewer inflammatory M1 microglia/macrophages and more anti-inflammatory M2 microglia. In addition, significantly more matrix metalloproteinase 2 (MMP2)-positive cells were observed at the lesion site 1 week after injury in the early-mobilized rats. Multiple labeling studies suggested that many MMP2-positive cells were M2 microglia. MMP9-positive cells that highly co-expressed GFAP were also observed more frequently in the early-mobilized rats. The density of growth-associated protein-positive structures in the lesion center was significantly higher in the early-mobilized rats at 3 weeks after spinal cord injury. The present results suggest that early mobilization after spinal cord injury reduced the production of M1 microglia/macrophages while increasing the production of M2 microglia at the lesion site. Early mobilization might also activate the expression of MMP2 in M2 microglia and MMP9 in astrocytes. These cellular dynamics might suppress neuroinflammation at the lesion site, thereby inhibiting the progression of tissue destruction and promoting nerve regeneration to recover motor function.

    DOI: 10.1016/j.ibneur.2022.04.002

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  • Association between long-term hospitalization for mental illness and locomotive syndrome. 査読

    Yusuke Ishibashi, Hideki Arakawa, Sae Uezono, Sosuke Kitakaze, Munetsugu Kota, Shinichi Daikuya, Junichi Hirakawa, Takeshi Nakamura, Etsuo Chosa

    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association   27 ( 2 )   473 - 477   2022年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Patients in psychiatric care wards face serious problems in terms of declining physical function due to aging and long-term hospitalization. This study aimed to determine the current status of locomotive syndrome (LS) in long-term inpatients in psychiatric care wards and to clarify the factors associated with LS risk severity. METHODS: The study included 84 patients admitted to psychiatric care wards who underwent the LS stage test. We investigated the participants' age, length of stay, antipsychotic drug use, body mass index, and activities of daily living were assessed and analyzed the correlations between the LS stage test and each assessment item. RESULTS: The participants' mean age was 60.0 ± 13.6 years, with those aged ≥60 years comprising nearly 60% of the sample. The participants' mean length of stay was 10.5 ± 12.0 years, and over half of the patients stayed >5 years: 17.9% stayed between 5 and 10 years, while 36.9% stayed ≥10 years. Nearly 90% of participants stayed for >1 year. The LS stage test showed that 60.7% of the participants were stage 3, 21.4% were stage 2, 14.3% were stage 1, and 3.6% had no risk. The results of the LS stage indicated significant correlations with age, length of stay, and the Barthel Index scores. CONCLUSIONS: Patients who stay in a psychiatric care unit for a long period experience declining physical function, which is associated with aging and long-term hospitalization and might affect their activities of daily living.

    DOI: 10.1016/j.jos.2021.01.015

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  • An 18-hole round of golf acutely elevates serum interleukin-6 and brain-derived neurotrophic factor concentration - a pilot study 査読

    Yoshinori Yasuoka, Takeshi Nakamura, Yasunori Umemoto, Tokio Kinoshita, Sven P. Hoekstra, Keisuke Hoshiai, Hiroshi Ohko, Masahiro Abo, Fumihiro Tajima

    The Journal of Physical Fitness and Sports Medicine   11 ( 1 )   1 - 7   2022年1月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:The Japanese Society of Physical Fitness and Sports Medicine  

    DOI: 10.7600/jpfsm.11.1

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  • Impact of early mobilization on discharge disposition and functional status in patients with subarachnoid hemorrhage: A retrospective cohort study. 査読 国際誌

    Masatsugu Okamura, Masaaki Konishi, Akiko Sagara, Yasuo Shimizu, Takeshi Nakamura

    Medicine   100 ( 51 )   e28171   2021年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Whereas early rehabilitation improves the patients' physical function in patients with cerebral infarction and hemorrhage, complications in the early stage are the main barriers in patients with subarachnoid hemorrhage (SAH). Therefore, the clinical impact of early rehabilitation in patients with SAH is not well documented. We sought to investigate whether early mobilization is associated with favorable discharge disposition and functional status in patients with SAH.Hospitalization data of 35 patients (65.7 ± 13.7 years, 37.1% men) were retrospectively reviewed. The early and delayed mobilization groups were defined as those who had and had not participated in walking rehabilitation on day 14, respectively. We investigated whether patients were discharged or transferred to another hospital and assessed their functional status using the Functional Ambulation Categories, Ambulation Index, Glasgow Outcome Scale, and modified Rankin Scale scores.Nine patients (69.2%) in the early mobilization group and one patient (4.5%) in the delayed mobilization group were discharged home directly (P < .001). In multivariate logistic regression analysis, early mobilization was independently associated with home discharge after adjustment using the World Federation of Neurosurgical Societies grade (adjusted odds ratio = 30.20, 95% CI = 2.77-329.00, P < .01). Early mobilization was associated with favorable functional status at discharge through multivariate linear regression analysis (standardized beta = 0.64 with P < .001 for the Functional Ambulation Category and beta = -0.62 with P < .001 for the modified Rankin Scale, respectively).Early mobilization was associated with home discharge and favorable functional status at discharge. Larger prospective studies are warranted.

    DOI: 10.1097/MD.0000000000028171

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  • Long Term Decreased Exercise Capacity of COVID-19 Patients Who Received Mechanical Ventilation in Japan: A Case Series. 査読 国際誌

    Takuya Saeki, Fumihiro Ogawa, Mina Matsumiya, Mei Yamamura, Hideyuki Oritsu, Manabu Nonogaki, Jo Uesugi, Ichiro Takeuchi, Takeshi Nakamura

    American journal of physical medicine & rehabilitation   2021年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    ABSTRACT: The long-term exercise capacity of coronavirus disease 2019 (COVID-19) patients with acute respiratory distress syndrome (ARDS) is not clear. The 6-minute walking distance (6MWD) of four patients with COVID-19-associated ARDS was followed for 6 months after admission to the hospital. These four patients were admitted to the intensive care unit (ICU) of our hospital and received mechanical ventilation. Rehabilitation therapy (positioning, postural drainage, and passive range of motion exercises) was started after ICU admission. Mobilization therapy, including muscle power training, sitting on the edge of the bed, and endurance training, was performed after the end of sedation. The Medical Research Council sum scores and Barthel Indexes for the patients improved after ICU discharge and completely recovered 6 months after admission to the hospital. However, the 6MWD of the four patients remained shorter than those of healthy persons of the same age at 6 months after admission to the hospital. Furthermore, the minimum SpO2 during the 6-minute walking test remained below 96%. It is possible that patients who receive mechanical ventilation due to COVID-19-associated ARDS have decreased long-term exercise capacity, despite muscle power and activities of daily living recovering completely.

    DOI: 10.1097/PHM.0000000000001803

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  • Clinical introduction and benefits of non-invasive ventilation for above C3 cervical spinal cord injury. 査読 国際誌

    Akiko Toki, Takeshi Nakamura, Yukihide Nishimura, Mikio Sumida, Fumihiro Tajima

    The journal of spinal cord medicine   44 ( 1 )   70 - 76   2021年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Study design: Retrospective study.Objectives: To determine the best time to introduce non-invasive ventilation (NIV), clinical effectiveness of NIV, and complications of long-term use of NIV in patients with high-level cervical spinal cord injuries (CSCI).Setting: Public Hospital, Japan.Methods: The subjects were 14 tracheostomy ventilator-dependent patients, with above C3 spinal lesions, and American Spinal Cord Injury Association Impairment Scale A (ASIA A). They were referred to our clinic between 2005 and 2010 for switching mechanical ventilation support system from tracheostomy ventilation to NIV. Respiratory function tests were measured before and after NIV. Patients who were successfully switched to NIV were interviewed two years later and asked about their health and social status.Results: Eleven patients were successfully switched to NIV. The success rate of switching to NIV within 1 year was also high (P < 0.05). NIV improved the vital capacity of C2 ASIA A and C1 ASIA A patients with adequate respiratory accessory muscle strength sufficient to expand the chest wall. The time on ventilator-free spontaneous breathing increased or did not deteriorate after NIV. Three C1 ASIA A patients with insufficient muscle strength to expand the thorax mastered glossopharyngeal breathing and enjoyed a short ventilator-free time. All patients who were successfully switched to NIV lived in the community. Two patients developed minor complications after discharge and two died later for unrelated causes.Conclusion: Ventilator-dependent patients should be switched to NIV within 1 year of injury. Long-term NIV can improve respiratory function and clinical outcome.

    DOI: 10.1080/10790268.2019.1644474

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  • Increased serum levels of brain-derived neurotrophic factor following wheelchair half marathon race in individuals with spinal cord injury. 査読 国際誌

    Yukihide Nishimura, Takeshi Nakamura, Yoshi-Ichiro Kamijo, Hideki Arakawa, Yasunori Umemoto, Tokio Kinoshita, Yuta Sakurai, Fumihiro Tajima

    The journal of spinal cord medicine   1 - 6   2020年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Objective: Brain-derived neurotrophic factor (BDNF) has beneficial effects on metabolism as well as the peripheral and central nervous systems. The aim of this study was to assess the response of serum BDNF concentration ([BDNF]s) to wheelchair half marathon race in individuals with spinal cord injury (SCI). Design: Prospective observational study. Setting: The 34th Oita International Wheelchair Marathon Race in Japan. Participants: Nine cervical SCIs (CSCI) and 8 thoracic and lumber SCIs (LSCI) male athletes. Interventions: Wheelchair half-Marathon Race. Outcome measures: [BDNF]s, plasma concentrations of adrenaline ([Ad]p), noradrenaline ([Nor]p), and cortisol ([Cor]p), hematocrit, and platelet count were measured the day before, immediately after, and an hour after the race. Results: [BDNF]s increased significantly immediately after the race in both groups (CSCI; P = 0.0055, LSCI; P = 0.0312) but returned to the baseline levels at one hour after the race. However, [BDNF]s immediately and one hour after the race were significantly higher in LSCI than in CSCI (immediately after the race; P = 0.0037, 1 h after the race; P = 0.0206). Hematocrit and platelet count remained unchanged throughout the study. In LSCI, [Ad]p, [Nor]p and [Cor]p increased significantly immediately after and one hour after the race, compared with the baseline values (P < 0.05). On the other hand, these variables remained unchanged throughout the study in the CSCI. Conclusions: [BDNF]s increased significantly from the baseline in both LCSI and CSCI but was higher in LSCI than in CSCI immediately after and one hour after the race.

    DOI: 10.1080/10790268.2020.1816402

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  • Rehabilitation Therapy for a COVID-19 Patient Who Received Mechanical Ventilation in Japan. 査読 国際誌

    Takuya Saeki, Fumihiro Ogawa, Ryosuke Chiba, Manabu Nonogaki, Jo Uesugi, Ichiro Takeuchi, Takeshi Nakamura

    American journal of physical medicine & rehabilitation   99 ( 10 )   873 - 875   2020年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A 65-yr-old man visited a primary care hospital with a continued fever of 38°C for 3 days. As his fever did not improve until 8 days after, he was admitted into another acute care hospital, where his respiratory condition rapidly worsened. Therefore, the patient was transferred to our hospital. On the day of transfer (day 1), he was started on mechanical ventilation. COVID-19 was diagnosed using a polymerase chain reaction assay 6 days after admission (day 6). The rehabilitation therapy was begun on day 6. The initial rehabilitation programs focused on positioning and postural drainage. The patient was extubated on day 19, and he began standing and stepping on the same day. Gait exercises began on day 22, and endurance training was initiated on day 28. The patient was discharged from our hospital on day 34 as he met the physical function milestones. One month after discharge, the Medical Research Council sum score and Barthel Index had each improved; therefore, muscle strength and daily activities had returned to normal. It was assumed that mobilization should be performed as soon as possible after the end of sedation during the acute phase of severe COVID-19 infection in patients receiving mechanical ventilation.

    DOI: 10.1097/PHM.0000000000001545

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  • Mobilization within 24 hours of new-onset stroke enhances the rate of home discharge at 6-months follow-up: a prospective cohort study. 査読 国際誌

    Tokio Kinoshita, Tatsuya Yoshikawa, Yukihide Nishimura, Yoshi-Ichiro Kamijo, Hideki Arakawa, Takeshi Nakamura, Takamasa Hashizaki, Sven P Hoekstra, Fumihiro Tajima

    The International journal of neuroscience   1 - 10   2020年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Background/Objective: Previous research indicates a better improvement of functional independence measure (FIM) at discharge in acute-stroke patients who received physiatrist and registered therapist operating rehabilitation (PROr) within 24 hrs compared with those who received after 24 hrs was reported. The aim of this prospective cohort study was to determine whether PROr provided within 24 hrs for new-onset stroke patients affects home-discharge rate at 6 months later.Methods: Acute new-onset stroke patients admitted to our hospital and received PROr (n = 227) and were conducted into 3 categories based on the time until starting PROr; within 24 hrs (very early mobilization; VEM; n = 47), 24-48 hrs (early mobilization; EM; n = 77) and >48 hrs (later mobilization; LM; n = 103). Home-discharge rates as well as changes in FIM, and rates of recurrence and mortality during the 6-month follow-up were assessed.Results: A total of 139 patients [VEM (n = 32), EM (n = 43), LM (n = 64)] could be followed throughout the 6-month period. The home-discharge rate was ∼80% and significantly higher by ∼20% in VEM than EM. The gains in the motor subscale of FIM at 6 months were significantly higher in VEM than LM, while the mortality and recurrent rates were not significantly different among the categories.Conclusions: Starting PROr within 24 hrs of new-onset stroke may help to increase home-discharge rates at 6-month follow-up, simultaneously with a higher FIM. Very early mobilization in our hospital did not increase the risks of recurrence or death.

    DOI: 10.1080/00207454.2020.1774578

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  • Relationship between ultrasonographically low-echoic lesions under the skin, wheelchair sitting time, and interface pressure on ischial region in individuals with chronic spinal cord injury. 査読 国際誌

    Shinji Kawasaki, Yukihide Nishimura, Yoshi-Ichiro Kamijo, Hiroyasu Uenishi, Taro Nakamura, Ken Kouda, Yumi Koike, Takeshi Nakamura, Fumihiro Tajima

    The journal of spinal cord medicine   44 ( 6 )   1 - 7   2020年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Objective: To determine the relationship between physical findings, wheelchair sitting time, and interface pressure on ischial region in subjects with spinal cord injury (SCI).Design: Cross-sectional study.Setting: Rehabilitation center in Japan.Participants: Manual wheelchair users with chronic SCI (n = 45).Interventions: Pressure ulcers (PU) were diagnosed by inspection, palpation, and ultrasonography. Self-reports were obtained on wheelchair sitting time and pressure mapping was recorded while the subject was seated on the wheelchair.Outcome measures: Subjects were divided into those with ultrasonographically low-echoic lesions (PU-positive group, n = 11) and no such lesions (PU-negative group, n = 34). Outcome measures included wheelchair sitting time and interface pressure at bilateral ischial regions.Results: Using ultrasonography, 13 low-echoic lesions were identified in 11 subjects of the PU-positive group. The pressure duration was longer and interface pressure was significantly higher in subjects of the PU-positive group compared with those of the PU-negative group (P < 0.05 and P < 0.001, respectively).Conclusions: This is the first study to evaluate the interrelationship between physical findings, sitting time, and ultrasonographically measured interface pressure on ischial region area in subjects with spinal cord injury. To prevent pressure ulcers, we recommend avoidance of prolonged wheelchair sitting and measures that can reduce the interface pressure. These variables should be carefully tailored to the needs of the individual subjects with SCI.

    DOI: 10.1080/10790268.2020.1746873

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  • Childhood Nephrotic Syndrome Complicated by Catastrophic Multiple Arterial Thrombosis Requiring Bilateral Above-Knee Amputation. 査読 国際誌

    Hayato Togashi, Yuko Shimosato, Ken Saida, Noriko Miyake, Takeshi Nakamura, Shuichi Ito

    Frontiers in pediatrics   8   107 - 107   2020年

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    記述言語:英語  

    Background: Thromboembolic events are rare but critical complications in childhood nephrotic syndrome. The veins are more commonly affected, while arterial thrombosis is extremely rare but often life-threatening. Herein, we describe the clinical course of a 10-years-old girl with catastrophic multiple arterial thrombosis at the primary onset of nephrotic syndrome who underwent bilateral above-knee amputation. Case diagnosis/treatment: A previous healthy 10-years-old girl contracted the influenza B virus. Five days later, she suddenly developed severe ischemia in both legs. Physical examination showed eyelid and leg edema, and laboratory tests revealed hypoalbuminemia and acute kidney injury. After undergoing contrast-enhanced computed tomography, the patient was diagnosed with multiple arterial thrombosis (including the bilateral iliac arteries) due to nephrotic syndrome. Despite the performance of surgical thrombectomies, fasciotomy, and systematic heparinization, she required bilateral above-knee amputation. The patient achieved spontaneous remission of nephrotic syndrome, and her renal function fully recovered. There were no findings suggestive of secondary nephrotic syndrome and antiphospholipid syndrome. Her protein C and protein S concentrations were slightly decreased at admission. However, whole-exome sequencing revealed a thrombotic risk variant (T630I) in the PROS1 gene encoding protein S. This missense variant is often reported in patients with thrombosis or protein S deficiency, and may result in a thrombotic predisposition in some situations, such as nephrotic syndrome. Conclusions: Arterial thrombosis is a rare complication; however, it must be considered, especially in patients with new-onset nephrotic syndrome. Early recognition is important for early intervention and prevention of serious sequelae.

    DOI: 10.3389/fped.2020.00107

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  • 【障がい者スポーツを知ろう!】障がい者スポーツ選手への医学的サポート

    中村 健, 河崎 敬

    関節外科   37 ( 11 )   1225 - 1229   2018年11月

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    記述言語:日本語   出版者・発行元:(株)メジカルビュー社  

    障がい者スポーツ選手に対する医学的サポートには、健常者によるスポーツと同様に、国内・国際大会などに帯同する医療サポート、日常的な健康管理や国際大会などの参加可能を判断するメディカルチェック、アンチ・ドーピングがある。また、障がい者スポーツに特有なものとしてクラス分けがある。さらに、スポーツの安全性の確保や競技力向上のための医学的研究がある。(著者抄録)

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  • Reply. 国際誌

    Takeshi Nakamura

    PM & R : the journal of injury, function, and rehabilitation   10 ( 9 )   989 - 990   2018年9月

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  • Head-out immersion in hot water increases serum BDNF in healthy males. 査読 国際誌

    Daisuke Kojima, Takeshi Nakamura, Motohiko Banno, Yasunori Umemoto, Tokio Kinoshita, Yuko Ishida, Fumihiro Tajima

    International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group   34 ( 6 )   834 - 839   2018年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    PURPOSE: Brain-derived neurotrophic factor (BDNF) is an important neurotrophin. The present study investigated the effects of head-out water immersion (HOI) on serum BDNF concentrations. METHODS: Eight healthy men performed 20 min head-out water immersion at 42 °C (hot-HOI) and 35 °C (neutral-HOI). These experimental trials were administered in a randomised order separated by at least 7 days. Venous blood samples were withdrawn at rest, immediately after the 20-min HOI, as well as at 15 and 30 min after the end of the HOI. Serum BDNF and S100β, plasma cortisol, platelet and monocyte counts, and core body temperature (Tcb) were measured. RESULTS: Tcb was higher at the end of the hot-HOI and 15 min after hot-HOI (p < 0.01), but recovered to pre-HOI level at 30 min after hot-HOI. No change in Tcb was recorded during neutral-HOI. BDNF level was higher (p < 0.05) at the end of the hot-HOI and at 15 min after the end of hot-HOI, and returned to the baseline at 30 min after hot-HOI. S100β, platelet count and monocyte count remained stable throughout the study. Cortisol level was lower at the end of the hot-HOI and returned to pre-HOI level during the recovery period. BDNF and S100β, cortisol, and platelet and monocyte counts did not change throughout the neutral-HOI study. CONCLUSIONS: The present findings suggested that the increase in BDNF during 20-min hot-HOI was induced by hyperthermia through enhanced production, rather than by changes in permeability of the blood-brain barrier (BBB), platelet clotting mechanisms or secretion from monocytes.

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  • Properties of Paraspinal Muscles in Japanese High School Baseball Players With Terminal-Stage Lumbar Spondylolysis. 査読 国際誌

    Hiroyuki Tsuboi, Yukihide Nishimura, Takeshi Sakata, Hideaki Tanina, Hideki Arakawa, Takeshi Nakamura, Yuichi Umezu, Fumihiro Tajima

    PM & R : the journal of injury, function, and rehabilitation   10 ( 2 )   175 - 182   2018年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Lumbar spondylolysis is a defect in the pars interarticularis that is common in young athletes; the stress distribution at the pars interarticularis is the highest in extension and rotation movements. The paraspinal muscles play an important role in stabilization of the lumbar spine; however, no study has assessed the properties of paraspinal muscles in athletes with lumbar spondylolysis. OBJECTIVE: To evaluate the properties of paraspinal muscles in athletes with lumbar spondylolysis. DESIGN: Cross-sectional study. SETTING: Laboratory. PARTICIPANTS: Six high school baseball players with terminal-stage lumbar spondylolysis and 11 high school baseball players without organic lumbar lesions of similar anthropometric characteristics. METHODS: All subjects performed the unsupported trunk holding test combined with surface electromyographic (EMG) power spectral analysis until exhaustion. The results of EMG power spectral analysis were compared between the spondylolysis and control groups. MAIN OUTCOME MEASUREMENTS: The median frequency (MF) was computed from the raw EMG signal of the erector spinae and multifidus during trunk holding test using fast Fourier transform spectrum analysis. The initial MF and MF slope were calculated. RESULTS: No significant differences in endurance time were found between the spondylolysis and control groups. The initial MF and the MF slopes of the erector spinae and multifidus were significantly lower in the spondylolysis group than in the control group. CONCLUSIONS: The results suggest lower fast-twitch motor unit recruitment in the erector spinae and multifidus of high school baseball players with terminal-stage lumbar spondylolysis compared with the control. LEVEL OF EVIDENCE: IV.

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  • Effects of physiatrist and registered therapist operating acute rehabilitation (PROr) in patients with stroke 査読

    Tokio Kinoshita, Yukihide Nishimura, Takeshi Nakamura, Takamasa Hashizaki, Daisuke Kojima, Makoto Kawanishi, Hiroyasu Uenishi, Hideki Arakawa, Takahiro Ogawa, Yoshi-ichiro Kamijo, Takashi Kawasaki, Fumihiro Tajima

    PLOS ONE   12 ( 10 )   e0187099   2017年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PUBLIC LIBRARY SCIENCE  

    Objective
    Clinical evidence suggests that early mobilization of patients with acute stroke improves activity of daily living (ADL). The purpose of this study was to compare the utility of the physiatrist and registered therapist operating acute rehabilitation (PROr) applied early or late after acute stroke.
    Subjects and methods
    This study was prospective cohort study, assessment design. Patients with acute stroke (n = 227) admitted between June 2014 and April 2015 were divided into three groups based on the time of start of PROr: within 24 hours (VEM, n = 47), 24-48 hours (EM, n = 77), and more than 48 hours (OM, n = 103) from stroke onset. All groups were assessed for the number of deaths during hospitalization, and changes in the Glasgow Coma Scale (GCS), National Institute of Health Stroke Scale (NIHSS), and Functional Independence Measure (FIM) at hospital discharge.
    Interventions
    All patients were assessed by physiatrists, who evaluated the specific needs for rehabilitation, and then referred them to registered physical therapists and occupational therapists to provide early mobilization (longer than one hour per day per patient).
    Results
    The number of deaths encountered during the PROr period was 13 (out of 227, 5.7%), including 2 (4.3%) in the VEM group. GCS improved significantly during the hospital stay in all three groups, but the improvement on discharge was significantly better in the VEM group compared with the EM and OM groups. FIM improved significantly in the three groups, and the gains in total FIM and motor subscale were significantly greater in the VEM than the other groups.
    Conclusions
    PROr seems safe and beneficial rehabilitation to improve ADL in patients with acute stroke.

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  • 【東京パラリンピックに向けて今、何をすべきか-パラリンピアン育成のために】パラリンピアンの医学的サポート

    河崎 敬, 伊藤 倫之, 指宿 立, 尾川 貴洋, 中村 健, 田島 文博

    Journal of Clinical Rehabilitation   26 ( 6 )   557 - 562   2017年6月

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    記述言語:日本語   出版者・発行元:医歯薬出版(株)  

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  • Noninvasive positive pressure ventilation enhances the effects of aerobic training on cardiopulmonary function 査読

    Takashi Moriki, Takeshi Nakamura, Yoshi-ichiro Kamijo, Yukihide Nishimura, Motohiko Banno, Tokio Kinoshita, Hiroyasu Uenishi, Fumihiro Tajima

    PLOS ONE   12 ( 5 )   e0178003   2017年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PUBLIC LIBRARY SCIENCE  

    Purpose
    The purpose of this study was to determine the effect of aerobic training under noninvasive positive pressure ventilation (NPPV) on maximal oxygen uptake (VO2max).
    Methods
    Ten healthy young male volunteers participated in the study. Before the training, stroke volume (SV) and cardiac output (CO) were measured in all subjects under 0, 4, 8, and 12 cmH(2)O NPPV at rest. Then, the subjects exercised on a cycle ergometer at 60% of pretraining VO2max for 30 min daily for 5 consecutive days with/without NPPV. The 5-day exercise protocol was repeated after a three-week washout period without/with NPPV. The primary endpoint was changes in VO2max. The secondary endpoints were changes in SV, CO, maximum heart rate (HRmax), maximum respiratory rate (RRmax), maximum expiratory minute volume (VEmax) and the percent change in plasma volume (PV).
    Results
    NPPV at 12 cmH(2)O significantly reduced SV and CO at rest. VO2max significantly increased after 5 days training with and without NPPV, but the magnitude of increase in VO2max after training under 12 cmH(2)O NPPV was significantly higher than after training without NPPV. VEmax significantly increased after training under NPPV, but not after training without NPPV. HRmax and RRmax did not change during training irrespective of NPPV. The percent change in PV was similar between training with and without NPPV. The 5-day training program with NPPV resulted in greater improvement in VO2max than without NPPV.
    Conclusions
    Aerobic training under NPPV has add-on effects on VO2max and exercise-related health benefits in healthy young men.

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  • 【脊椎・脊髄疾患のニューロサイエンス 神経所見の診かたから再生医療まで】脊椎・脊髄疾患の治療法の進歩 理学療法 ニューロリハビリテーション

    荒川 英樹, 中村 健, 尾川 貴洋, 田島 文博

    整形・災害外科   60 ( 5 )   609 - 616   2017年4月

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    記述言語:日本語   出版者・発行元:金原出版(株)  

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  • Changes in oxidized LDL during a half marathon in athletes with spinal cord injuries. 査読 国際誌

    Toshihito Mitsui, Tomoyuki Ito, Yusuke Sasaki, Takashi Kawasaki, Takeshi Nakamura, Yukihide Nishimura, Tatsuru Ibusuki, Yukiharu Higuchi, Sayoko Hosoe, Fumiaki Ito, Fumihiro Tajima

    Spinal cord series and cases   3   17015 - 17015   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    INTRODUCTION: We reported previously that exercise significantly increases plasma adrenaline and oxidized low-density lipoprotein (oxLDL) in healthy subjects but not in persons with spinal cord injury (SCI). Since oxLDL and adrenaline levels are associated with oxidant/antioxidant balance, and exercise training elicits production of reactive oxygen species, we elucidated the effects of exercise on adrenaline, oxidant/antioxidant balance and oxLDL in individuals with SCI. CASE PRESENTATION: Eight subjects with cervical spinal cord injury (CSCI) and nine subjects with lower lesion of SCI (lower SCI (LSCI)) participated in a wheelchair half marathon race, and blood samples were collected before (pre), immediately after (post) and 1 h after the race (post 1 h). The blood samples were used to determine adrenaline, derivatives of reactive oxygen metabolites (d-ROMs) and biological antioxidant potential (BAP), both as markers for oxidant/antioxidant balance. DISCUSSION: Pre-serum oxLDL levels were 147.2±8.1 and 97.0±10.4 U l-1 (mean±s.e.m.) in LCSI and CSCI subjects, respectively, and remained stable throughout the study. Adrenaline levels were higher in LSCI athletes than in CSCI athletes, especially post half marathon. Serum d-ROMs level did not change between pre and post in both groups. The mean BAP was significantly higher in LSCI than in CSCI subjects (2574±94.6 vs 2118±94.6 μmol l-1) at post, whereas the oxidative stress index (d-ROMs/BAP) was similar in the two groups throughout the study. In conclusion, exercise did not increase the d-ROMs or d-ROMs/BAP ratio in CSCI and LSCI subjects. The lack of increase in the plasma oxLDL level in SCI subjects was not due to the lack of response of adrenaline to exercise.

    DOI: 10.1038/scsandc.2017.15

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  • Fatigue-related differences in erector spinae between prepubertal children and young adults using surface electromyographic power spectral analysis 査読

    Hideaki Tanina, Yukihide Nishimura, Hiroyuki Tsuboi, Takeshi Sakata, Takeshi Nakamura, Ken-ya Murata, Hideki Arakawa, Yuichi Umezu, Fumihiro Tajima

    JOURNAL OF BACK AND MUSCULOSKELETAL REHABILITATION   30 ( 1 )   1 - 9   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IOS PRESS  

    BACKGROUND: The erector spinae is more resistant to fatigue in adult women than men. However, no study has reported the sex differences in back muscle fatigue in children.
    OBJECTIVE: The aim of this study was to evaluate the fatigability of erector spinae in prepubertal children and adults, in both males and females.
    METHODS: Fourteen prepubertal boys, 13 prepubertal girls, 14 adult men, and 13 adult women performed the Sorensen back isometric endurance test until exhaustion. The results of electromyographic (EMG) power spectral analysis of erector spinae were compared between both age groups and sexes.
    RESULTS: The slopes of EMG power spectral median and mean power frequency were significantly higher in males than in females, in both age groups. Furthermore, the slopes were significantly lower in prepubertal children than in adults, in both males and females.
    CONCLUSIONS: Our results showed major differences in the fatigue threshold of the erector spinae between boys and girls and children and adults. The muscle fatigued faster in prepubertal boys and adult men than in prepubertal girls and adult women. In both sexes, a lower slope of EMG power spectrum parameters of the erector spinae was noted during endurance test in prepubertal children compared to adults.

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  • Aerobic Exercise Combined With Noninvasive Positive Pressure Ventilation Increases Serum Brain-Derived Neurotrophic Factor in Healthy Males 査読

    Takamitsu Kawazu, Takeshi Nakamura, Takashi Moriki, Yoshi-ichiro Kamijo, Yukihide Nishimura, Tokio Kinoshita, Fumihiro Tajima

    PM&R   8 ( 12 )   1136 - 1141   2016年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE INC  

    Background: Brain-derived neurotrophic factor (BDNF) has been implicated in enhancing neuronal health. Exercise and noninvasive positive-pressure ventilation (NPPV) are known to independently alter BDNF levels in patients with depression, dementia, type 2 diabetes, chronic obstructive pulmonary disease, and obstructive sleep apnea syndrome. However, the combined effects of exercise and NPPV on serum BDNF in normal subjects are unknown.
    Objective: To determine the effects of the combination of acute aerobic exercise under NPPV on serum BDNF in normal adults.
    Design: Cross-over design study.
    Setting: Wakayama Medical University.
    Participants: Ten healthy young men.
    Intervention: The subjects exercised on a cycle ergometer at 60% of pretraining maximal oxygen uptake (VO2max) for 30 minutes daily for 5 consecutive days with or without NPPV (12 cmH(2)O). The 5-day exercise protocol was repeated after a 3-week washout period with or without NPPV.
    Main Outcome Measurements: Serum BDNF, plasma cortisol, and platelet, lymphocyte, and monocyte counts were measured at 24 hours before the first day exercise with or without NPPV and 24 hour after last day exercise with or without NPPV at resting condition. Measurements were also made on the first day exercise; serum BDNF level was measured immediately before and immediately after exercise, as well as at 1, 2, and 3 hours after exercise with or without NPPV.
    Results: The 5-day exercise protocol significantly (P &lt;.05) increased serum BDNF when combined with NPPV, but not without NPPV, and did not change plasma cortisol level, platelet, or lymphocyte counts, with or without NPPV. The 5-day exercise protocol also significantly (P &lt;.05) decreased monocyte count without NPPV, but not with NPPV, relative to baseline. Changes noticed immediately after the first day of exercise included significant (P &lt;.05) increase in serum BDNF compared with immediately before the exercise, with or without NPPV.
    Conclusions: The results indicated that a 5-day exercise protocol combined with NPPV increased serum BDNF, suggesting that NPPV synergistically enhances the effect of aerobic exercise on serum BDNF level.

    DOI: 10.1016/j.pmrj.2016.05.004

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  • Walking Pattern in COPD Patients 査読

    Yukiko Sakamoto, Keiko Sakamoto, Yoshiaki Minakata, Sumiko Shiba, Takeshi Nakamura, Masakazu Ichinose, Fumihiro Tajima

    REHABILITATION NURSING   41 ( 4 )   211 - 217   2016年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:WILEY-BLACKWELL  

    PurposeTo compare the activity and walking pattern of individuals with chronic obstructive pulmonary disease (COPD) and control subjects during a 24-hour period.
    DesignCross-sectional study in home and community.
    MethodsThe average walking velocity, time spent in sitting, standing, and lying, and numbers of steps per 24hours were measured in nine individuals with COPD and eight healthy control subjects.
    FindingsThe average walking velocity in individuals with COPD was equivalent to that of the control subjects. Individuals with COPD walked significantly less than the control subjects. The total time spent sitting, standing, and walking was similar in the two groups.
    ConclusionsThe results suggested that the walking velocity selected by individuals with COPD serves to minimize energy cost per distance.
    Clinical RelevanceThe study findings emphasize the need to maintain walking velocity in any exercise prescription for individuals with COPD.

    DOI: 10.1002/rnj.209

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  • A Pilot Clinical Study of Olfactory Mucosa Autograft for Chronic Complete Spinal Cord Injury. 査読

    Koichi Iwatsuki, Fumihiro Tajima, Yu-Ichiro Ohnishi, Takeshi Nakamura, Masahiro Ishihara, Koichi Hosomi, Koshi Ninomiya, Takashi Moriwaki, Toshiki Yoshimine

    Neurologia medico-chirurgica   56 ( 6 )   285 - 92   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JAPAN NEUROSURGICAL SOC  

    Recent studies of spinal cord axon regeneration have reported good long-term results using various types of tissue scaffolds. Olfactory tissue allows autologous transplantation and can easily be obtained by a simple biopsy that is performed through the external nares. We performed a clinical pilot study of olfactory mucosa autograft (OMA) for chronic complete spinal cord injury in eight patients according to the procedure outlined by Lima et al. Our results showed no serious adverse events and improvement in both the American Spinal Injury Association (ASIA) Impairment Scale (AIS) grade and ASIA motor score in five patients. The preoperative post-rehabilitation ASIA motor score improved from 50 in all cases to 52 in case 2, 60 in case 4, 52 in case 6, 55 in case 7, and 58 in case 8 at 96 weeks after OMA. The AIS improved from A to C in four cases and from B to C in one case. Motor evoked potentials (MEPs) were also seen in one patient, reflecting conductivity in the central nervous system, including the corticospinal tract. The MEPs induced with transcranial magnetic stimulation allow objective assessment of the integrity of the motor circuitry comprising both the corticospinal tract and the peripheral motor nerves.We show the feasibility of OMA for chronic complete spinal cord injury.

    DOI: 10.2176/nmc.oa.2015-0320

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  • Suppression of activation of muscle sympathetic nerve during non-noxious local cooling after the end of local cooling in normal adults. 査読 国際誌

    Kazuya Ishida, Takeshi Nakamura, Kenichi Kimura, Nami Kanno, Noriyo Takahashi, Yoshi-Ichiro Kamijo, Fumihiro Tajima

    European journal of applied physiology   116 ( 4 )   851 - 8   2016年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    PURPOSE: While non-noxious local cooling is widely used in physical medicine, its effect on muscle sympathetic nerve activity (MSNA) and cardiovascular regulation are not clear. The purpose of the present study was to assess the responses of MSNA, blood pressure (BP), heart rate (HR) and local blood flow during non-noxious local cooling. METHODS: The study included two protocols. Both protocols consisted of 10-min rest in supine position, followed by 15-min local cooling (15 °C) of the shin and anterior foot, and 20-min recovery. MSNA of the right common peroneal nerve, BP, HR, and shin skin temperature (TSK) were recorded in eight men in the first protocol, while leg blood flow (LBF) was measured in the same subjects by strain-gauge plethysmography in the second protocol. RESULTS: TSK gradually decreased from 31.5 ± 0.02 to 16.0 ± 1.01 °C (mean ± SEM) during local cooling, and gradually increased after the end of local cooling. No subject complained of pain, and BP and HR remained constant. The MSNA burst rate increased significantly (p < 0.05) to 141.1 ± 12.5 % during local cooling, but decreased significantly (p < 0.05) to 73.6 ± 5.9 % during the recovery period. Total MSNA also increased to 148.0 ± 14.2 % (p < 0.05) during local cooling, and decreased to 74.0 ± 13.9 % (p < 0.05) at recovery. LBF remained constant through the experiment. CONCLUSIONS: The results suggest that MSNA is activated by non-noxious local cooling, and attenuated after the end of local cooling without any changes in HR and BP.

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  • Rehabilitation of Charcot-Marie-Tooth disease 査読

    Fumihiro Tajima, Takeshi Nakamura, Yukihide Nishimura, Hideki Arakawa, Takashi Kawasaki, Takahiro Ogawa, Kazunari Nishiyama

    Brain and Nerve   68 ( 1 )   59 - 68   2016年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Igaku-Shoin Ltd  

    Charcot-Marie-Tooth disease (CMT) is one of the most commonly inherited neuromuscular diseases causing progressive muscle weakness
    contracture
    deformity in the feet, legs, and hands
    and impairments of ambulation and handgrip. Reduced physical ability can be attributed not only to the disease but also to physical deconditioning. Previously, most physicians in the field of rehabilitation were anxious about the hypothesis of overwork weakness in CMT, and did not conduct intensive exercise programs for patients with CMT. However, recent studies have reported that progressive resistance strengthening programs for lower extremities are feasible, safe, beneficial, and improve exercise intolerance and undue fatigue in patients with CMT. Although the improvement in exercise tolerance may be partly due to the reversal of deconditioning effect of related sedentary lifestyle, progressive resistance training and physical fitness can improve walking function, activities of daily living, and subjective perception of pain and fatigue in patients with CMT. To increase the daily physical function, some studies described the potential benefits of ankle-foot orthoses (AFOs)
    however, no control study supported it. So far, the training programs on CMT have been dependent on the exercise programs for able-bodied individuals. To increase the effects of rehabilitation, optimal programs that combine the training protocol and AFO strategies will have to be designed for patients with CMT.

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  • 【シャルコー・マリー・トゥース病】CMTのリハビリテーション

    田島 文博, 中村 健, 西村 行秀, 荒川 英樹, 河崎 敬, 尾川 貴洋, 西山 一成

    BRAIN and NERVE: 神経研究の進歩   68 ( 1 )   59 - 68   2016年1月

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    記述言語:日本語   出版者・発行元:(株)医学書院  

    シャルコー・マリー・トゥース病患者における日常生活動作上の問題は歩行・手指機能障害である。特に,足・下腿筋群筋力低下による足・膝関節不安定性が問題である。そのリハビリテーションとして,下肢装具療法と下肢筋力強化のための抵抗運動訓練などの運動療法がある。1980年代,筋力強化訓練により過用性筋力低下が懸念されていたが,近年,漸増抵抗運動は筋力を低下させず,股関節周囲筋などを強化し,歩行能力を維持・改善させる報告が相次いでいる。(著者抄録)

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  • Motor evoked potential and voluntary EMG activity after olfactory mucosal autograft transplantation in a case of chronic, complete spinal cord injury: case report. 査読 国際誌

    Koichi Iwatsuki, Fumihiro Tajima, Yoshiyuki Sankai, Yu-Ichiro Ohnishi, Takeshi Nakamura, Masahiro Ishihara, Koichi Hosomi, Koshi Ninomiya, Takashi Moriwaki, Toshiki Yoshimine

    Spinal cord series and cases   2   15018 - 15018   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    The efficacy of olfactory mucosal autografts (OMAs) for chronic spinal cord injury (SCI) has been reported, but there is no report documenting electrophysiological conductivity via the emergence of motor evoked potentials (MEPs). We report the case of a 39-year-old man with chronic, complete SCI at T8, who exhibited MEPs after OMA transplantation, and, with intensive rehabilitation, was ultimately able to ambulate with short leg braces and Lofstrand crutches. The initial injury occurred in a motor vehicle accident in November 1999 and resulted in a complete loss of sensorimotor function below T8. OMA transplantation to the injury site was performed in March 2010 in combination with intensive pre- and postoperative rehabilitation. The patient exhibited voluntary electromyograph (EMG) activity and MEPs at 96 and 144 weeks after transplantation and he was was ambulatory with short leg braces and Lofstrand crutches at 144 weeks after transplantation. We were able to elicit MEPs after OMA with intensive rehabilitation. To our knowledge, this is the first report of recovery of electrophysiological conductivity in the spinal cord after any type of treatment for chronic, complete SCI.

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  • Ehlers-Danlos症候群による重度の関節弛緩に対して装具療法が有効であった一例

    垣田 友里, 垣田 真里, 坂野 元彦, 荒川 英樹, 木下 利喜生, 佐々木 裕介, 西村 行秀, 中村 健, 田島 文博

    リハビリテーション科診療近畿地方会誌   ( 15 )   35 - 38   2015年12月

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    記述言語:日本語   出版者・発行元:日本リハビリテーション医学会-近畿地方会  

    46歳女。両膝関節の不安定性と膝関節痛を主訴とした。頸椎すべり症に対する頸椎前方後方除圧固定術後のリハビリテーション中であった。顔面、手背、肘部の皮膚に軽度過伸展を認めたが、皮膚の脆弱性は認めず、両側の肩関節、肘関節、手指関節、膝関節、足関節で関節可動域の亢進を認め、関節可動域亢進型Ehles-Danlos症候群の診断基準を満たしていた。膝関節痛と反張膝・膝関節の動揺性に対し、下肢筋力増強訓練と装具による歩行訓練を行った。装具は両側支柱付き長下肢装具へ変更してパッドを追加し、炭素繊維素材を用いて軽量化を図った。歩行時に足元を見る必要がなくなって、長時間の装具が可能となり歩容の改善も認めた。積極的なリハビリテーションにより、関節可動域および下肢筋力について大きな変化は認めなかったが、FIM総点は100点→112点へ改善を認め、術後2ヵ月で家庭復帰した。その後も復職に向けて通院リハビリ中である。

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  • Hot water immersion induces an acute cytokine response in cervical spinal cord injury 査読

    C. A. Leicht, K. Kouda, Y. Umemoto, M. Banno, T. Kinoshita, T. Moriki, T. Nakamura, N. C. Bishop, V. L. Goosey-Tolfrey, F. Tajima

    European Journal of Applied Physiology   115 ( 11 )   2243 - 2252   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer Verlag  

    Purpose: The dysfunctional sympathetic nervous system in individuals with cervical spinal cord injury (CSCI) impairs adrenergic responses and may, therefore, contribute to the blunted post-exercise cytokine response. The purpose of this study was to investigate an alternative way to exercise to induce an acute cytokine response by passive core temperature elevation in CSCI. Methods: Seven male participants with a motor complete CSCI and 8 male able-bodied controls were immersed for 60 min in water set at a temperature 2 °C above the individuals’ resting oesophageal temperature. Blood was collected pre, post, and every hour up to 4 h post-immersion. Results: Hot water immersion resulted in an IL-6 plasma concentration mean increase of 133 ± 144 % in both groups (P = 0.001). On a group level, IL-6 plasma concentrations were 68 ± 38 % higher in CSCI (P = 0.06). In both groups, IL-8 increased by 14 ± 11 % (P = 0.02) and IL-1ra by 18 ± 17 % (P = 0.05). Catecholamine plasma concentrations were significantly reduced in CSCI (P &lt
     0.05) and did not increase following immersion. Conclusions: Passive elevation of core temperature acutely elevates IL-6, IL-8 and IL-1ra in CSCI despite a blunted adrenergic response, which is in contrast to earlier exercise interventions in CSCI. The present study lays the foundation for future studies to explore water immersion as an alternative to exercise to induce an acute cytokine response in CSCI.

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  • The role of cardiac sympathetic innervation and skin thermoreceptors on cardiac responses during heat stress. 査読 国際誌

    Manabu Shibasaki, Yasunori Umemoto, Tokio Kinoshita, Ken Kouda, Tomoyuki Ito, Takeshi Nakamura, Craig G Crandall, Fumihiro Tajima

    American journal of physiology. Heart and circulatory physiology   308 ( 11 )   H1336-42 - H1342   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSIOLOGICAL SOC  

    The mechanism(s) for the changes in cardiac function during heat stress remain unknown. This study tested two unique hypotheses. First, sympathetic innervation to the heart is required for increases in cardiac systolic function during heat stress. This was accomplished by comparing responses during heat stress between paraplegics versus tetraplegics, with tetraplegics having reduced/absent cardiac sympathetic innervation. Second, stimulation of skin thermoreceptors contributes to cardiovascular adjustments that occur during heat stress in humans. This was accomplished by comparing responses during leg only heating between paraplegic versus able-bodied individuals. Nine healthy able-bodied, nine paraplegics, and eight tetraplegics participated in this study. Lower body (i.e., nonsensed area for para/tetraplegics) was heated until esophageal temperature had increased by ~1.0°C. Echocardiographic indexes of diastolic and systolic function were performed before and at the end of heat stress. The heat stress increased cardiac output in all groups, but the magnitude of this increase was attenuated in the tetraplegics relative to the able-bodied (1.3 ± 0.4 vs. 2.3 ± 1.0 l/min; P < 0.05). Diastolic function was maintained in all groups. Indexes of left atrial and ventricular systolic function were enhanced in the able-bodied, but did not change in tetraplegics, while these changes in paraplegics were attenuated relative to the able-bodied. These data suggest that the cardiac sympathetic innervation is required to achieve normal increases in cardiac systolic function during heat stress but not required to maintain diastolic function during this exposure. Second, elevated systolic function during heat stress primarily occurs as a result of increases in internal temperature, although stimulation of skin thermoreceptors may contribute.

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  • Elevation of interleukin-6 and attenuation of tumor necrosis factor-α during wheelchair half marathon in athletes with cervical spinal cord injuries. 国際誌

    T Ogawa, T Nakamura, M Banno, Y Sasaki, Y Umemoto, K Kouda, T Kawasaki, F Tajima

    Spinal cord   52 ( 8 )   601 - 5   2014年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    STUDY DESIGN: Nonrandomized study. OBJECTIVES: The purpose of this study was to determine the effects of long and intensive exercise on interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in athletes with cervical spinal cord injuries (CSCI). SETTING: The 30th Oita International Wheelchair Marathon Race. METHODS: Blood samples from six athletes with CSCI and eight athletes with thoracic and lumber spinal cord injuries (SCI) participating in wheelchair half marathon race were collected before the race, immediately after the race and 2 h after the race. IL-6, TNF-α, adrenaline and blood cell counts were measured. RESULTS: Monocyte count remained stable throughout the study in the CSCI group but was significantly high at 2 h after the race in the SCI group. Plasma IL-6 concentrations were significantly elevated immediately after the race in both groups, although the levels in CSCI were significantly lower than in the SCI group. Plasma adrenaline was significantly elevated immediately after the race in the SCI group but recovered at 2 h after the race. In contrast, plasma adrenaline did not change in the CSCI group throughout the study and was significantly lower than in the SCI group. Plasma TNF-α did not change throughout the study in the SCI group compared with a significant decrease at 2 h after the race in the CSCI group. CONCLUSION: Long and intensive exercise increased IL-6 in the CSCI group despite the small muscle mass and lack of sympathetic nervous system. The post-race fall in plasma TNF-α in the CSCI group could be related to the inhibitory effect of rising IL-6 in the presence of normal monocyte count and stable adrenaline level.

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  • Wheelchair marathon creates a systemic anti-inflammatory environment in persons with spinal cord injury. 査読 国際誌

    Yusuke Sasaki, Kazunari Furusawa, Fumihiro Tajima, Takeshi Nakamura, Ken Kouda, Nami Kanno, Takashi Kawasaki, Yasunori Umemoto, Katuji Shimizu

    Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine   24 ( 4 )   295 - 301   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:LIPPINCOTT WILLIAMS & WILKINS  

    OBJECTIVE: To investigate interleukin (IL)-6 and other inflammation markers in athletes with spinal cord injury (SCI) during a wheelchair marathon race. DESIGN: Nonrandomized study in an actual race. SETTING: The 28th Oita International Wheelchair Marathon Race, Japan. PARTICIPANTS: Twenty-eight men with SCI between T7 and L2 (16 full-marathon racers, full-group; and 12 half-marathon racers, half-group). MAIN OUTCOME MEASURES: Plasma IL-6, tumor necrosis factor (TNF)-α, and high-sensitivity C-reactive protein (hsCRP) were measured the day before, immediately after the race, and 2 hours after the race. RESULTS: Plasma IL-6 concentrations increased by 18.4-fold and by 9.4-fold (P < 0.05) in the full- and half-groups immediately after the race (P < 0.05), respectively, but returned to baseline at 2 hours of recovery. In contrast, plasma TNF-α and hsCRP did not change throughout the race in both groups. The fold change in plasma IL-6 immediately after the race relative to the prerace was significantly higher in the full-group than the half-group (P < 0.05). In both groups, plasma IL-6 immediately after the race did not correlate with the average wheelchair speed. Interestingly, plasma IL-6 and hsCRP before the race in the full-group, but not in half-group, correlated negatively with the average wheelchair speed (P < 0.05). CONCLUSIONS: The study demonstrated that half- and full-marathon wheelchair races increased plasma IL-6, but not TNF-α and hsCRP. Furthermore, the top athletes of the full-group had low plasma IL-6 and hsCRP at baseline. Wheelchair marathon competition, especially full-marathon, and daily training seem to have beneficial effects on SCI through the plasma IL-6 response.

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  • 【ここまで進んだ リハビリテーション】総論 内科系医師に知っておいてほしいこと

    河崎 敬, 坂野 元彦, 幸田 剣, 中村 健, 田島 文博

    診断と治療   102 ( 3 )   323 - 327   2014年3月

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    記述言語:日本語   出版者・発行元:(株)診断と治療社  

    <Headline>1.急性期のリハビリテーション(リハ)はあらゆる疾患・障害に対して行うべきである。また、急性期リハの目的は不必要な安静臥床、廃用症候群や合併症を予防し、機能改善を図ることである。2.脳卒中の発症後できるだけ早期に立位・歩行訓練を開始することが予後を改善することが報告されており、頭部外傷でも受傷後早期リハ、多くの訓練量が求められている。3.集中治療室(ICU)では治療のための鎮静および臥床は必要ではあるが、近年、ICUであっても早期離床を行うことは可能であり、安全かつ有効であることが報告されている。(著者抄録)

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    その他リンク: https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2014&ichushi_jid=J00697&link_issn=&doc_id=20140312190002&doc_link_id=%2Fae4digta%2F2014%2F010203%2F003%2F0323-0327%26dl%3D0&url=http%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fae4digta%2F2014%2F010203%2F003%2F0323-0327%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

  • Disabled sports and physiological specificity in persons with spinal cord injury

    Takeshi Nakamura, Kazunari Furusawa, Ken Kouda, Yukihide Nishimura, Yusuke Sasaki, Yasunori Umemoto, Motohiko Banno, Takahiro Ogawa, Takashi Kawasaki, Tomoyuki Ito, Toshihito Mitsui, Fumihiro Tajima

    The Journal of Physical Fitness and Sports Medicine   3 ( 3 )   335 - 339   2014年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:The Japanese Society of Physical Fitness and Sports Medicine  

    DOI: 10.7600/jpfsm.3.335

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  • Carotid blood flow, cardiovascular and endocrine responses during head-up tilt in patients with acute cerebrovascular diseases. 査読 国際誌

    Takahiro Miyake, Takeshi Nakamura, Ken Kouda, Hiroyasu Uenishi, Yoshio Yamamoto, Shinji Kawasaki, Masami Ueno, Fumihiro Tajima

    SpringerPlus   3   191 - 191   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER INTERNATIONAL PUBLISHING AG  

    The purpose of this study was to define common carotid blood flow (CBF), cardiovascular and endocrine responses during head-up tilt (HUT) in patients with acute cerebrovascular diseases (CVD). In 31 male patients with acute CVD (damage of the supratentorial area) and 21 age-matched control male subjects, we measured CBF, mean blood pressure (MBP), heart rate, stroke volume and cardiac output responses before (baseline), during and after HUT. We also measured plasma levels of antidiuretic hormone, adrenaline, noradrenaline, aldosterone and plasma renin activity. After obtaining baseline measurements during 3-minutes horizontal position, HUT was performed for 5 minutes, followed by continuation of recording for 3 more minutes in the horizontal position. During HUT, CBF decreased significantly and equally in both groups. MBP did not change during HUT in both groups. The endocrine responses were also not different between the two groups. The results suggest that damage to the supratentorial area in patients with acute CVD do not alter the CBF, cardiovascular and endocrine responses. In other words, HUT does not predispose patients with acute CVD to serious falls in MBP and CBF at upright posture.

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  • Immediate effects of unaffected arm exercise in poststroke patients with spastic upper limb hemiparesis. 査読 国際誌

    Keiko Sakamoto, Takeshi Nakamura, Hiroyasu Uenishi, Yasunori Umemoto, Hideki Arakawa, Masahiro Abo, Ryuichi Saura, Hiroyoshi Fujiwara, Toshikazu Kubo, Fumihiro Tajima

    Cerebrovascular diseases (Basel, Switzerland)   37 ( 2 )   123 - 7   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:KARGER  

    BACKGROUND: Spasticity is a major disabling symptom in stroke patients. Clinically, one of the goals of management of stroke patients should be to reduce spasticity. Recent evidence suggests that motor recovery after stroke comprises a hierarchical, dynamic framework of interacting mechanisms in brain cortex. We hypothesized that unaffected arm exercise can stimulate the ipsilateral motor cortex and change the affected upper limb function and spasticity in stroke patients. To test the hypothesis, we evaluated the effects of unaffected arm exercise on spasticity of the affected upper limb and motor function in stroke patients. METHODS: The study was performed in 41 chronic stroke patients with upper limb hemiparesis. Affected upper limb spasticity and function were assessed at baseline and after each intervention by the modified Ashworth Scale and Fugl-Meyer Assessment, respectively. Patients were also evaluated clinically by the modified Rankin Scale, Functional Independence Measurement and National Institutes of Health Stroke Scale. Subjects stood for 10 min during the control period, and then cycled an arm crank ergometer at 50% of maximum work load for 10 min by the unaffected arm in standing position. RESULTS: The mean age at study entry was 64.6 ± 1.7 years. The latency between onset of stroke and the study was 109.0 ± 17.0 months (range, 6-495). The cause of hemiparesis was cerebral infarction (n = 21), intracerebral hemorrhage (n = 17) or subarachnoid hemorrhage (n = 3). Exercise significantly improved the modified Ashworth Scale compared with baseline (p < 0.0001). No such change was noted after the control intervention. The Fugl-Meyer Assessment score did not change after exercise compared with baseline (p = 0.95). CONCLUSIONS: We conclude that 10 min of unaffected arm exercise improves the affected upper limb spasticity in stroke patients. Further studies are needed to determine the exact mechanism of such improvement and the long-term effects of unaffected arm exercise on motor performance.

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  • 温泉による全身浴(頸下浸水)の身体・脳活性化メカニズム

    田島 文博, 中村 健, 下松 智哉, 児嶋 大介, 山本 洋司, 櫻井 雄太, 木下 利喜生, 尾川 貴洋, 藤原 浩芳, 久保 俊一

    日本生体電気・物理刺激研究会誌   27   19 - 23   2013年12月

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    記述言語:日本語   出版者・発行元:日本生体電気・物理刺激研究会  

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  • Age-related sex differences in erector spinae muscle endurance using surface electromyographic power spectral analysis in healthy humans. 査読 国際誌

    Hiroyuki Tsuboi, Yukihide Nishimura, Takeshi Sakata, Hiroshi Ohko, Hideaki Tanina, Ken Kouda, Takeshi Nakamura, Yuichi Umezu, Fumihiro Tajima

    The spine journal : official journal of the North American Spine Society   13 ( 12 )   1928 - 33   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND CONTEXT: Previous studies reported that the erector spinae muscle is more resistant to fatigue in healthy adult women than in men. However, no study has reported changes in back muscle fatigue with aging in healthy men and women. PURPOSE: The aim of this study was to evaluate age-related changes in muscle fatigue of erector spinae muscle in men and women. STUDY DESIGN/SETTING: This cross-sectional study was conducted in a laboratory. PATIENT SAMPLE: Fifty-three healthy subjects (11 elderly men, 11 elderly women, 17 young men, and 14 young women) without low back pain history. OUTCOME MEASURES: The median frequency (MF) and mean power frequency (MPF) during trunk holding test were derived from the raw electromyographic (EMG) signal using Fast Fourier Transform spectrum analysis program. The rates of changes in MF and MPF were calculated. METHODS: Subjects performed the unsupported trunk holding test until exhaustion. The results of power spectral analysis of the EMG activity of the left erector spinae muscle were compared in both age groups and sexes. RESULTS: The endurance time in young men was significantly shorter than in young women. The slopes of MF and MPF in young men were significantly higher than in young women. There were no significant differences in MF and MPF slopes of elderly men and elderly women. Furthermore, the MF and MPF slopes were significantly lower in elderly men than young men but similar in the two women groups. CONCLUSIONS: Age-related changes in the slopes of MF and MPF of erector spinae muscle occur in healthy men but not in healthy women.

    DOI: 10.1016/j.spinee.2013.06.060

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  • Increase in interleukin-6 immediately after wheelchair basketball games in persons with spinal cord injury: Preliminary report 査読

    T. Kinoshita, T. Nakamura, Y. Umemoto, D. Kojima, T. Moriki, T. Mitsui, M. Goto, Y. Ishida, F. Tajima

    Spinal Cord   51 ( 6 )   508 - 510   2013年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Study design:Case series.Objectives:To investigate the effects of wheelchair basketball game on plasma interleukin-6 (IL-6), tumor necrosis factor-(TNF), C-reactive protein (CRP) and blood cell counts in persons with spinal cord injury (SCI).Setting:The 2009 Mei-shin League of Wheelchair Basketball Games held at Wakayama, Japan.Participants:Five wheelchair basketball players with SCI voluntarily participated in this study.Interventions:Blood samples were taken approximately 1 h before the player warm-up for the game and immediately after the game.Main outcome measures:IL-6, TNF CRP and blood cell count were measured.Results:Plasma IL-6 level and number of monocytes were significantly increased after the game, compared with pre-game measurements (P&lt
    0.05). No changes were observed in other measurements. There was a significant relationship between increased IL-6 levels and accumulated play duration.Conclusion:The lack of change in TNF and CRP levels suggested that the exercise-induced rise in IL-6 was not related to exercise-induced inflammatory response. Furthermore, the associated increase in the number of monocytes did not correlate with exercise-induced IL-6 changes, negating monocytes as the source of IL-6. © 2013 International Spinal Cord Society All rights reserved.

    DOI: 10.1038/sc.2013.4

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  • 那智勝浦町における被災地支援活動

    西 弘子, 佐藤 泰子, 田島 文博, 芝崎 学, 城本 依穂, 喜田 弘美, 坂口 千恵子, 柳川 敦子, 網野 美佐, 中村 健, 坂野 元彦, 河﨑 敬

    繊維製品消費科学   54 ( 3 )   243 - 246   2013年

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    記述言語:日本語   出版者・発行元:一般社団法人 日本繊維製品消費科学会  

    <p><tt>平成</tt>23<tt>年</tt>9<tt>月</tt>3<tt>日,和歌山県那智勝浦町は台風</tt>12<tt>号により甚大な被害を受けた.台風災害直後より,町立病院と町保健師が協力し被災地支援活動を行った.病院スタッフと町保健師により,被災地に開設した救護所と避難所において医療支援活動を行った.この活動を通して,避難所における環境不備による健康問題が明らかになった.また,衣料支援における問題点も明らかとなり,下着,靴下,男性用のズボンの供給不足などが問題となった.</tt></p>

    DOI: 10.11419/senshoshi.54.3_243

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  • [Basic strategy of rehabilitation for regeneration of spinal cord nerve]. 査読

    Tajima F, Nakamura T

    Rinsho shinkeigaku = Clinical neurology   53 ( 11 )   1183   2013年

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  • Comparison of the effects of flexion and extension of the thumb and fingers on the position and cross-sectional area of the median nerve. 査読 国際誌

    Yasushi Toge, Yukihide Nishimura, Jeffrey R Basford, Takako Nogawa, Midori Yamanaka, Takeshi Nakamura, Munehito Yoshida, Akira Nagano, Fumihiro Tajima

    PloS one   8 ( 12 )   e83565   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    OBJECTIVE: To assess the separate effects of thumb and finger extension/flexion on median nerve position and cross-sectional area. METHODS: Ultrasonography was used to assess median nerve transverse position and cross-sectional area within the carpal tunnel at rest and its movement during volitional flexion of the individual digits of the hand. Both wrists of 165 normal subjects (11 men, 4 women, mean age, 28.6, range, 22 to 38) were studied. RESULTS: Thumb flexion resulted in transverse movement of the median nerve in radial direction (1.2 ± 0.6 mm), whereas flexion of the fingers produced transverse movement in ulnar direction, which was most pronounced during flexion of the index and middle fingers (3.2 ± 0.9 and 3.1 ± 1.0 mm, respectively). Lesser but still statistically significant movements were noted with flexion of the ring finger (2.0 ± 0.8 mm) and little finger (1.2 ± 0.5 mm). Flexion of the thumb or individual fingers did not change median nerve cross-sectional area (8.5 ± 1.1 mm(2)). CONCLUSIONS: Volitional flexion of the thumb and individual fingers, particularly the index and middle fingers, produced significant transverse movement of the median nerve within the carpal tunnel but did not alter the cross-sectional area of the nerve. The importance of these findings on the understanding of the pathogenesis of the carpal tunnel syndrome and its treatment remains to be investigated.

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  • Wheelchair half-marathon race increases natural killer cell activity in persons with cervical spinal cord injury

    M. Banno, T. Nakamura, K. Furusawa, T. Ogawa, Y. Sasaki, K. Kouda, T. Kawasaki, F. Tajima

    Spinal Cord   50 ( 7 )   533 - 537   2012年7月

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    掲載種別:研究論文(学術雑誌)  

    Study design:Non-randomized study.Objective:We reported that individuals with cervical spinal cord injury (CSCI) showed no increase in natural killer cell activity (NKCA) in response to 20-min arm exercise. It could be argued that this lack of response was owing to the short duration and intensity of the exercise.Setting:The 29th Oita International wheelchair marathon race.Methods:The present study compared the effects of wheelchair half-marathon race on natural killer (NK) cell count, NKCA and other hematological and hormonal parameters in six subjects with CSCI and seven control subjects with spinal cord injury between T4 and L1 (SCI), before, immediately after and 2 h after recovery.Results:NK cell counts increased at both time points after the race in SCI, but not in CSCI, compared with before the race. NKCA increased immediately in both groups of subjects after the race, and then returned to the pre-race level at 2 h after the race. Plasma cortisol did not change in both groups throughout the study. Plasma adrenaline increased sharply in SCI after the race, then returned to the pre-race level at 2 h after the race, whereas no change was observed in CSCI throughout the study.Conclusion:The present study demonstrated that wheelchair half-marathon race increases NKCA despite the lack of increase in plasma adrenaline in CSCI, suggesting the activation of NKCA by mechanisms other than circulating adrenaline level. © 2012 International Spinal Cord Society.

    DOI: 10.1038/sc.2011.188

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  • 内部障害者の運動効果とスポーツ参加基準 内部障害者におけるスポーツ参加に向けての医学・生理学的課題と運動による炎症性サイトカイン上昇の検討

    中村 健, 幸田 剣, 西村 行秀, 後藤 正樹, 佐々木 裕介, 梅本 安則, 河崎 敬, 坂野 元彦, 尾川 貴洋, 田島 文博, 古澤 一成, 井手 睦

    The Japanese Journal of Rehabilitation Medicine   49 ( 7 )   404 - 407   2012年7月

  • Exercise significantly increases plasma adrenaline and oxidized low-density lipoprotein in normal healthy subjects but not in persons with spinal cord injury. 査読 国際誌

    Toshihito Mitsui, Takeshi Nakamura, Tomoyuki Ito, Yasunori Umemoto, Keiko Sakamoto, Tokio Kinoshita, Masafumi Nakagawa, Fumihiro Tajima

    Archives of physical medicine and rehabilitation   93 ( 4 )   725 - 7   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    OBJECTIVES: To compare plasma concentrations of oxidized low-density lipoprotein (oxLDL) and adrenaline during exercise between persons with spinal cord injury (SCI) and able-bodied (AB) individuals. DESIGN: Randomized controlled study. SETTING: Human laboratory at a medical university. PARTICIPANTS: Persons with SCI (n=7) and AB individuals (n=9). INTERVENTION: Two-hour arm crank ergometer exercise at 60% maximum oxygen consumption. MAIN OUTCOME MEASURES: Plasma oxLDL and adrenaline levels. RESULTS: Exercise significantly increased plasma adrenaline levels in AB persons (mean ± SD: rest, 45.4±32.2 pg/mL; exercise, 200.9±113.7 pg/mL; P<.05) and persons with SCI; however; the magnitude of the increase in those with SCI was attenuated (mean ± SD: rest, 45.4±14.0 pg/mL; exercise, 83.0±55.8 pg/mL; P<.05). Exercise also significantly increased plasma oxLDL levels in AB persons (mean ± SD: rest, 102.2±30.2 U/L; exercise, 179.7±60.0 U/L; P<.05), but not in persons with SCI (mean ± SD: rest, 124.3±66.0 U/L; exercise, 138.9±59.5 U/L). CONCLUSIONS: The results suggest that increases in plasma adrenaline levels during exercise contribute to the increase in plasma oxLDL levels.

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  • Cardiovascular responses to arm static exercise in men with thoracic spinal cord lesions. 査読 国際誌

    Keiko Sakamoto, Takeshi Nakamura, Yasunori Umemoto, Yumi Koike, Yusuke Sasaki, Fumihiro Tajima

    European journal of applied physiology   112 ( 2 )   661 - 6   2012年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    Isometric muscle contraction (static exercise) induces circulatory response. Static exercise in individuals with thoracic spinal cord injury (TSCI) induces cardiovascular response and blood redistribution to the non-exercising muscles. The aim of our study was to determine the circulatory response during arm static exercise in individuals with TSCI and able-bodied (AB) controls. Mean blood pressure (MBP), heart rate (HR), cardiac output (CO), leg skin blood flow (SBF), and leg muscle blood flow (MBF) were recorded noninvasively, total peripheral resistance (TPR) was estimated by dividing MBP by CO, and hormonal changes were measured before, during and after static 35% maximal voluntary contraction (MVC) of the arm flexor muscles in seven male individuals with TSCI (T7-T11) and seven age-comparable AB control (32.2 ± 7.6 and 31.0 ± 4.7 years, respectively). The 35% MVC was similar in TSCI and AB individuals (107.3 ± 28.2 and 101.0 ± 22.5 N, respectively). HR, CO, MBP, TPR, SBF and MBF increased in both groups during arm static exercise. Plasma epinephrine concentration increased during arm static exercise in AB controls only (P < 0.05). Circulation to leg muscles was similar in TSCI and AB individuals and the lack of sympathetic vasoconstriction in the paralyzed leg area did not alter the cardiovascular responses during 35% MVC of arm static exercise. We conclude that sympathetic vasoconstriction in the resting leg area did not contribute to the pressor reflex during 35% MVC of arm static exercise.

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  • Local heat application to the leg reduces muscle sympathetic nerve activity in human. 査読 国際誌

    Noriyo Takahashi, Takeshi Nakamura, Nami Kanno, Kenichi Kimura, Yasushi Toge, Kyu-Ha Lee, Fumihiro Tajima

    European journal of applied physiology   111 ( 9 )   2203 - 11   2011年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    The study was designed to assess the effects of local heat (LH) application on postganglionic muscle sympathetic nerve activity (MSNA) measured by microneurography in healthy men. In the first protocol, MSNA of the left peroneal nerve, blood pressure (BP), heart rate (HR), and skin temperature of the shin (TSK) were recorded in nine men. In the second protocol, leg blood flow (LBF) was measured in the same subjects by strain-gauge plethysmography. In both protocols, after 10 min of rest in the supine position, a heated hydrocollator pack was applied to the shin and anterior foot for 15 min and recovery was monitored over a period of 20 min. TSK gradually increased from 31.7 ± 0.1 to 41.9 ± 0.5°C (mean ± SEM) during LH. No subject complained of pain, and BP and HR remained constant. The MSNA burst rate (16.1 ± 2.1 beats/min) during the control period decreased significantly (P < 0.05) to 72.0 ± 2.3% during LH. Total MSNA also decreased to 59.2 ± 2.6% (P < 0.05) during LH, but both immediately returned to baseline at recovery. In contrast, LBF in the left leg significantly and immediately increased (P < 0.05) after LH application and remained significantly elevated until the end of the recovery period. These results suggest that: (1) LH application significantly attenuates MSNA without any changes in HR and BP. (2) Other factors in addition to MSNA seem to control regional blood flow in the lower extremity during LH.

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  • 【脊髄損傷 社会生活上の課題】余暇活動

    坂野 元彦, 尾川 貴洋, 三井 利仁, 中村 健, 田島 文博

    総合リハビリテーション   39 ( 7 )   657 - 660   2011年7月

  • 障害者スポーツ医学の最先端 ―残存骨格筋は内分泌器官である―:—残存骨格筋は内分泌器官である—

    田島 文博, 古澤 一成, 中村 太郎, 大隈 秀信, 梅津 祐一, 井手 睦, 美津島 隆, 上田 まり, 中村 健, 河津 隆三, 荒川 英樹, 伊藤 倫之, 山中 緑, 幸田 剣, 後藤 正樹, 佐々木 裕介, 神埜 奈美, 河崎 敬, 梅本 安則, 下松 智哉, 坂野 元彦, 上西 啓裕, 大川 裕行, 浅山 滉

    The Japanese Journal of Rehabilitation Medicine   47 ( 5 )   304 - 309   2010年

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    記述言語:日本語   出版者・発行元:公益社団法人 日本リハビリテーション医学会  

    DOI: 10.2490/jjrmc.47.304

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  • Standing position improves arm and hand performance on un-affected side in hemiplegic patients. 査読 国際誌

    Hidenori Tojo, Nami Kanno, Takeshi Nakamura, Yasuko Mizumoto, Midori Yamanaka, Fumihiro Tajima

    NeuroRehabilitation   27 ( 4 )   359 - 65   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND AND PURPOSE: The main objective of this study was to compare the hand and finger performance of stroke patients in standing and sitting positions. METHODS: The study subjects were 11 males and 3 females with history of stroke (age, 68.6 ± 6.3 years, mean ± SD). Inclusion criteria were right-handedness before stroke, right hemiparesis due to left hemisphere lesion induced by stroke, at least 4 months between stroke and study enrollment, and ability to stand for more than 10 minutes. Tests of dexterity (peg board test), attention, unilateral spatial neglect, and cognition were conducted in comfortable sitting and standing positions. Seven subjects started in standing position, and the other seven subjects were tested first in sitting position. Tests in the first position were performed on one day, and repeated one week later but performed in a different position. RESULTS: The mean performance time on the peg board test in standing position was significantly faster than in sitting position (p=0.022). However, the results of the Trail making test-part A, line cancellation test, line bisection and Mini Mental State conducted in standing position were similar to those of sitting position. There were no differences between the first and second trial tests. CONCLUSIONS: Our results showed that standing position improved the functional performance of hand and arm on the un-affected side in stroke patients, but had no effects on consistent attention, unilateral spatial neglect, or cognition.

    DOI: 10.3233/NRE-2010-0620

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  • Cardiovascular responses to hypothalamic arcuate nucleus stimulation in the rat: role of sympathetic and vagal efferents. 国際誌

    Takeshi Nakamura, Suresh Bhatt, Hreday N Sapru

    Hypertension (Dallas, Tex. : 1979)   54 ( 6 )   1369 - 75   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Experiments were carried out in urethane-anesthetized, artificially ventilated, adult male Wistar rats. Microinjections (50 nL) of N-methyl-d-aspartic acid (1, 5, and 10 mmol/L), but not artificial cerebrospinal fluid, into the hypothalamic arcuate nucleus (ARCN) elicited increases in mean arterial pressure (5.7+/-0.5, 13.2+/-1.4, and 17.3+/-1.1 mm Hg, respectively) and heart rate (24.3+/-4.3, 49.3+/-5.2, and 75.2+/-8.0 bpm, respectively). ARCN stimulation was accomplished by microinjections of a maximally effective concentration of N-methyl-d-aspartic acid (10 mmol/L). The tachycardic responses to the ARCN stimulation were significantly attenuated after bilateral vagotomy. Intrathecal injections of ionotropic glutamate receptor (iGLUR) antagonists completely blocked pressor responses to the ARCN stimulation, whereas the tachycardic responses were significantly attenuated but not abolished. Intrathecal injections of iGLUR antagonists at T9 to T10, combined with bilateral vagotomy, completely blocked the tachycardic responses to ARCN stimulation. ARCN stimulation with N-methyl-d-aspartic acid elicited increased activities of the greater splanchnic nerve (91.7+/-14.8%) and the renal nerve (109.3+/-13%). Intrathecal injections of iGLURs at T9 to T10 blocked the increase in the greater splanchnic nerve activity in response to ARCN stimulation. These results indicate the following: (1) the chemical stimulation of the ARCN elicits increases in mean arterial pressure, greater splanchnic nerve and renal nerve activity, and heart rate; (2) the increases in mean arterial pressure and sympathetic nerve activity are mediated via the activation of spinal cord iGLURs; and (3) the increases in heart rate are mediated via the activation of spinal cord iGLURs and decreases in vagal input to the heart.

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  • Cardiovascular responses to microinjections of urocortins into the NTS: role of inotropic glutamate receptors. 国際誌

    Takeshi Nakamura, Hreday N Sapru

    American journal of physiology. Heart and circulatory physiology   296 ( 6 )   H2022-9   2009年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Urocortin 1 (Ucn1) and urocortin 3 (Ucn3) are new members of the corticotrophin-releasing factor (CRF) peptide family. Ucn1 is a ligand for both the CRF type 1 receptors (CRF(1)Rs) and the CRF type 2 receptors (CRF(2)Rs), whereas Ucn3 is a high-affinity ligand for the CRF(2)Rs. Recently, we reported that Ucn3 microinjections into the medial nucleus tractus solitarius (mNTS) elicit decreases in mean arterial pressure (MAP) and heart rate (HR) (Nakamura T, Kawabe K, Sapru HN. Am J Physiol Heart Circ Physiol 296: H325-H332, 2009). The presence of CRF(2)Rs on afferent terminals has been reported in the mNTS of the rat. It was hypothesized that activation of CRF(2)Rs on afferent terminals in the mNTS may release glutamate, which, in turn, may elicit decreases in MAP and HR via activation of ionotropic glutamate receptors (iGLURs). This hypothesis was tested in urethane-anesthetized, artificially ventilated, adult male Wistar rats. Microinjections (100 nl) of Ucn1 (0.12 mM) into the mNTS elicited decreases in MAP and HR. The responses were partially blocked by microinjections of iGLUR antagonists into the mNTS. On the other hand, the decreases in MAP and HR elicited by microinjections of Ucn3 (0.06 mM) into the mNTS were completely blocked by microinjections of iGLUR antagonists into the mNTS. These results indicate that activation of CRF(2)Rs in the mNTS, by Ucn1 and Ucn3, releases glutamate, which, in turn, elicits decreases in MAP and HR via activation of iGLURs.

    DOI: 10.1152/ajpheart.00191.2009

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  • Low-echoic lesions underneath the skin in subjects with spinal-cord injury 査読

    N. Kanno, T. Nakamura, M. Yamanaka, K. Kouda, T. Nakamura, F. Tajima

    Spinal Cord   47 ( 3 )   225 - 229   2009年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Study design: Criterion standard and survey cases. Objectives: To assess the utility of ultrasonography for detecting deep tissue injury or incipient pressure ulcers and to determine the patterns of development of pressure ulcers in subjects with chronic spinal-cord injury (SCI). Setting: Ambulatory setting at public hospital. Methods: The subjects were 43 men with SCI between C5 and L1 (age: 42.6±11.6 years, mean±s.d.). A total of 129 areas (sacral region and bilateral ischial regions in each subject) were examined by inspection, palpation and ultrasonography. Results: Of the 129 areas, 112 were normal by inspection, palpation and ultrasound imaging. Nine areas were abnormal on ultrasonography alone and six were lesion positive by palpation and ultrasonography. Only two areas were abnormal by all three methods. Ultrasonography always detected a heterogeneous pattern and low-echoic areas directly adjacent to the bone. Conclusions: Our results indicated that low-echoic lesions, signaling deep tissue injuries or early pressure ulcers, originated in areas near the bone and extended toward the epidermis. The results suggest that ultrasonography is a useful tool for the early detection of deep tissue injuries or pressure ulcers. © 2009 International Spinal Cord Society All rights reserved.

    DOI: 10.1038/sc.2008.101

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  • Topical anesthesia blunts the pressor response induced by bowel manipulation in subjects with cervical spinal cord injury 査読

    K. Furusawa, H. Sugiyama, A. Tokuhiro, M. Takahashi, T. Nakamura, F. Tajima

    Spinal Cord   47 ( 2 )   144 - 148   2009年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Design: Prospective double-blind study. Objective: Manual emptying of rectal contents is necessary for patients with spinal cord injury to prevent bowel obstruction
    however, this maneuver induces a rise in blood pressure (BP) and autonomic dysreflexia (AD). The purpose of this prospective double-blind study was to investigate whether topical anorectal anesthesia attenuates the BP rise and AD during bowel manipulation in patients with cervical spinal cord injury (CSCI). Setting: Kibikogen Rehabilitation Center for Employment Injuries. Methods: The study subjects were 25 consecutive clinically stable patients with CSCI. Each subject received a complete bowel program involving manual removal of stool in lateral recumbency, after topical application of lidocaine or placebo jelly to the anorectal area. Systolic and diastolic BP, heart rate and symptoms of AD were recorded before, during and after bowel manipulation. Results: Systolic BP was significantly lower during the lidocaine arm of the study compared with placebo at insertion of rectal medication, digital stimulation, beginning of stool flow, manual removal of stool, end of stool flow and at 5-min after emptying. The mean maximal increase in systolic BP during lidocaine treatment (33.2±14.6 mm Hg) was less than during placebo (50.2±19.5 mm Hg, P&lt
    0.001). Conclusion: On the basis of our findings, we recommend induction of lidocaine jelly immediately before rectal manipulation in patients with CSCI to minimize the incidence and severity of AD. © 2009 International Spinal Cord Society All rights reserved.

    DOI: 10.1038/sc.2008.86

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  • Cardiovascular responses to microinjections of urocortin 3 into the nucleus tractus solitarius of the rat. 国際誌

    Takeshi Nakamura, Kazumi Kawabe, Hreday N Sapru

    American journal of physiology. Heart and circulatory physiology   296 ( 2 )   H325-32   2009年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Urocortin 3 (Ucn3) is a new member of the corticotropin-releasing factor (CRF) peptide family and is considered to be a specific and endogenous ligand for CRF type 2 receptors (CRF2Rs). The presence of CRF(2)Rs has been reported in the nucleus tractus solitarius (NTS) of the rat. It was hypothesized that the activation of CRF2Rs in the medial NTS (mNTS) may play a role in cardiovascular regulation. This hypothesis was tested in urethane-anesthetized, artificially ventilated, adult male Wistar rats. Microinjections (100 nl) of Ucn3 (0.03, 0.06, 0.12, and 0.25 mM) into the mNTS of anesthetized rats elicited decreases in mean arterial pressure (MAP: 5.0 +/- 1.0, 21.6 +/- 2.6, 20.0 +/- 2.8, and 12.7 +/- 3.4 mmHg, respectively) and heart rate (HR: 7.8 +/- 2.6, 46.2 +/- 9.3, 34.5 +/- 8.4, and 16.6 +/- 4.9 beats/min, respectively). Microinjections of artificial cerebrospinal fluid (100 nl) into the mNTS did not elicit cardiovascular responses. Maximum decreases in MAP and HR were elicited by 0.06 mM concentration of Ucn3. Cardiovascular responses to Ucn3 were similar in unanesthetized midcollicular decerebrate rats. A bilateral vagotomy completely abolished Ucn3-induced bradycardia. The decreases in MAP and HR elicited by Ucn3 (0.06 mM) were completely blocked by astressin (1 mM; nonselective CRFR antagonist) and K41498 (5 mM; selective CRF2R antagonist). Microinjections of Ucn3 (0.06 mM) into the mNTS decreased the efferent greater splanchnic nerve activity. After the blockade of CRF2Rs in the mNTS, a Ucn3-induced decrease in the efferent sympathetic nerve discharge was abolished. These results indicate that Ucn3 microinjections into the mNTS exerted excitatory effects on the mNTS neurons via CRF2Rs, leading to depressor and bradycardic responses.

    DOI: 10.1152/ajpheart.01044.2008

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  • Mechanism of heart rate responses elicited by chemical stimulation of the hypothalamic paraventricular nucleus in the rat. 国際誌

    Tetsuya Kawabe, Vineet C Chitravanshi, Takeshi Nakamura, Kazumi Kawabe, Hreday N Sapru

    Brain research   1248   115 - 26   2009年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    This study was designed to examine the mechanism of heart rate (HR) responses elicited by the stimulation of hypothalamic paraventricular nucleus (PVN). Experiments were done in urethane-anesthetized, barodenervated, adult, male Wistar rats. Chemical stimulation of the PVN by unilateral microinjections of N-methyl-d-aspartic acid (NMDA) elicited increases in HR which were attenuated by bilateral vagotomy. PVN-induced tachycardia was also attenuated by the blockade of the spinal ionotropic glutamate receptors (iGLURs) which was accomplished by intrathecal injections at T9-T10 or direct application at T1-T4 of iGLUR antagonists. The blockade of spinal iGLURs combined with bilateral vagotomy completely blocked PVN-induced tachycardia. Blockade of GABA receptors in the medial nucleus tractus solitarius (mNTS) also attenuated the PVN-induced tachycardia. Complete blockade of PVN-induced tachycardia was also observed after the blockade of iGLURs in both the spinal cord and mNTS. Combination of the blockade of mNTS GABA receptors and spinal iGLURs also abolished PVN-induced tachycardia. PVN-induced tachycardia was not altered by the blockade of spinal vasopressin or oxytocin receptors at T1-T4. These results suggested that in barodenervated rats: 1) tachycardia elicited by the chemical stimulation of the PVN was mediated via both inhibition of vagal and activation of sympathetic outflows to the heart, 2) the vagal inhibition contributing to the PVN-induced tachycardia was mediated by the iGLURs and GABARs in the mNTS, 3) sympathetic activation contributing to the PVN-induced tachycardia was mediated via spinal iGLURs, and 4) spinal vasopressin and oxytocin receptors were not involved in the mediation of PVN-induced tachycardia.

    DOI: 10.1016/j.brainres.2008.10.059

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  • Cold pressor test in the rat: medullary and spinal pathways and neurotransmitters. 国際誌

    Takeshi Nakamura, Kazumi Kawabe, Hreday N Sapru

    American journal of physiology. Heart and circulatory physiology   295 ( 4 )   H1780-7   2008年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    This study was designed to delineate the medullary and spinal pathways mediating the cardiovascular responses to cold pressor test (CPT) and to identify neurotransmitters in these pathways. Experiments were done in barodenervated, urethane-anesthetized, male Wistar rats. The CPT was performed by immersing the limbs and ventral half of the body of the rat in ice-cold water (0.5 degrees C) for 2 min. CPT elicited an immediate increase in mean arterial pressure (MAP), heart rate (HR), and greater splanchnic nerve activity (GSNA). Bilateral blockade of ionotropic glutamate receptors (iGLURs) in the rostral ventrolateral medullary pressor area (RVLM) significantly attenuated the CPT-induced responses. Bilateral blockade of gamma-aminobutyric acid (GABA) receptors, but not iGLURs, in the nucleus ambiguus (nAmb) significantly reduced the CPT-induced increases in HR, but not MAP. Blockade of spinal iGLURs caused a significant reduction in CPT-induced increases in MAP and GSNA, whereas the increases in HR were reduced to a lesser extent. Combination of the blockade of spinal iGLURs and bilateral vagotomy or intravenous atropine almost completely blocked CPT-induced tachycardia. Midcollicular decerebration significantly reduced CPT-induced increases in MAP and HR. These results indicated that: 1) CPT-induced increases in MAP, HR, and GSNA were mediated by activation of iGLURs in the RVLM and spinal cord, 2) activation of GABA receptors in the nAmb also contributed to the CPT-induced tachycardic responses, and 3) brain areas rostral to the brain stem also participated in the CPT-induced pressor and tachycardic responses.

    DOI: 10.1152/ajpheart.646.2008

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  • Attenuation of natural killer cell activity during 2-h exercise in individuals with spinal cord injuries 査読

    M. Ueta, K. Furusawa, M. Takahashi, Y. Akatsu, T. Nakamura, F. Tajima

    Spinal Cord   46 ( 1 )   26 - 32   2008年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Design: Non-randomized study. Objective: To determine natural killer cell cytotoxic activity (NKCA) to 2-h arm ergometer exercise in persons with spinal cord injuries (SCI) and the underlying mechanism of such response. Setting: University of Occupational and Environmental Health, Japan. Methods: We examined NKCA response to 2-h arm crank ergometer exercise at 60% of maximum oxygen consumption (VO 2max) in SCI and able-bodied persons. NKCA and plasma concentrations of prostaglandin E2 (PGE2), adrenaline and cortisol were measured before, during and immediately after the exercise. The study included seven subjects with SCI between Th11 and L4 and six able-bodied persons. Results: NKCA in able-bodied subjects increased (P&lt
    0.05) at 60 min of exercise and immediately after the exercise, and remained elevated up to 2 h after exercise. However, NKCA in SCI decreased (P&lt
    0.05) immediately after exercise but recovered at 2 h after exercise. Plasma adrenaline in both groups increased significantly (P&lt
    0.05) immediately after exercise and returned to baseline level 2 h after the exercise. Plasma cortisol in both groups remained constant throughout the study. In SCI, PGE2 significantly increased immediately after 2 h exercise and returned to the baseline level 2 h after exercise
    however, it remained unchanged during the test in able-bodied subjects. Conclusion: Our results suggested that increase of PGE2 in SCI partially contributes to NKCA. © 2008 International Spinal Cord Society All rights reserved.

    DOI: 10.1038/sj.sc.3102054

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  • Muscle sympathetic nerve activity during isometric exercise in patients with cerebrovascular accidents 査読

    Takeshi Nakamura, Takashi Mizushima, Mitsuru Yamamoto, Takamitsu Kawazu, Yuichi Umezu, Fumihiro Tajima

    Archives of Physical Medicine and Rehabilitation   86 ( 3 )   436 - 441   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:W.B. Saunders  

    Objectives: To define isometric exercise-induced pressor responses in patients with cerebrovascular accidents (CVAs) and to assess potential cardiovascular and sympathetic nervous system abnormalities during isometric exercise in CVA. Design: Nonrandomized study. Setting: University laboratory setting. Participants: Eight men with CVA who had documented damage of subcortical structures and 8 sex-matched controls. Interventions: A 2-minute sustained contraction of elbow flexor muscles in the unaffected side at 35% of maximal voluntary contraction (MVC
    isometric exercise). Main Outcome Measures: Heart rate, arterial blood pressure, and muscle sympathetic nerve activity (MSNA), recorded from the peroneal nerve on the affected side. Results: The percent changes in total MSNA, heart rate, and mean blood pressure in patients with CVA increased during isometric exercise but were attenuated compared with the controls. Total MSNA (mean burst amplitude per minute times burst rate) increased significantly in CVA and control subjects during isometric exercise by 18.7%±6.3% and 95.8%±25.2%, respectively. Conclusions: The attenuated pressor responses during isometric exercise in subjects with CVA relative to the controls indicated damage to subcortical structures
    such damage lowered sympathetic nervous response to isometric exercise. Our findings suggest that isometric exercise at 35% of MVC does not put patients with CVA at risk for serious tachycardia or hypertension. © 2005 by American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation.

    DOI: 10.1016/j.apmr.2004.06.071

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  • Muscle sympathetic nerve activity during cold pressor test in patients with cerebrovascular accidents 査読

    Takashi Mizushima, Fumihiro Tajima, Takeshi Nakamura, Mitsuru Yamamoto, Kyu-Ha Lee, Hajime Ogata

    Stroke   29 ( 3 )   607 - 612   1998年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Lippincott Williams and Wilkins  

    Background and Purpose - Autonomic dysfunction is frequently present in patients with cerebrovascular accidents (CVA). However, the pathophysiological mechanisms of these disorders are not clear. The purpose of the study was to assess the effects of CVA on the autonomic nervous system. Methods - In eight male patients with a history of CVA with damage of the cortical or subcortical structures, we measured the cold pressor response during recording of muscle sympathetic nerve activity (MSNA) from the peroneal nerve on the hemiplegic side. We also studied 10 age-matched male control subjects. Tests were performed before, during, and after immersion of the nonhemiplegic hand in ice water for a period of 3 minutes in each phase. We also recorded changes in heart rate (HR), arterial blood pressure, skin temperature of the middle finger, and perception of pain using the Borg's score. Results - During the control period, the mean burst count of MSNA in CVA (57.2±3.9 beats/100 HR) was higher than in control subjects (36.3±3.2 beats/100 HR) (P&lt
    .05). Total MSNA (the mean burst amplitude per minute times burst rate) increased significantly in CVA and control during the immersion period by 79.9±18.4% and 133.1±25.6%, respectively. The percent change in total MSNA in CVA was attenuated during immersion compared with control subjects. The HR and skin temperature responses as well as the Borg's score were similar in both groups during control, hand immersion, and recovery periods. Conclusions - The present results suggest that increased MSNA in CVA may be due to damage of cortical or subcortical structures or stroke-related changes in other areas or nonspecific changes that cause continuous increase in basal MSNA.

    DOI: 10.1161/01.STR.29.3.607

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MISC

  • 2016年リオパラリンピック大会におけるメディカルチェック報告

    河崎敬, 惠飛須俊彦, 惠飛須俊彦, 西村行秀, 中村健, 田島文博, 草野修輔, 陶山哲夫

    Japanese Journal of Rehabilitation Medicine   54 ( Supplement )   S448(J‐STAGE) - 10   2017年5月

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    記述言語:日本語   出版者・発行元:(公社)日本リハビリテーション医学会  

    J-GLOBAL

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  • Physiological basis and practice of rehabilitation medicine in the management of individuals with spinal cord injury

    Fumihiro Tajima, Yoshi-Ichiro Kamijo, Tadashi Sumiya, Yukihide Nishimura, Hideki Arakawa, Takeshi Nakamura, Kazunari Furusawa

    Clinical and Experimental Neuroimmunology   8   47 - 53   2017年1月

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    記述言語:英語   掲載種別:書評論文,書評,文献紹介等   出版者・発行元:Wiley-Blackwell  

    Rehabilitation medicine has made dramatic and successful progress in recent years, and neurologists and physiatrists have faced greater challenges in coordinating the clinical management of patients with spinal cord injuries (SCI). To ensure the best clinical outcome in SCI, physiatrist need to comprehend the dysfunctions of various body systems and the physiological aspects of the central nervous, musculoskeletal and autonomic nervous system, as well as the social support system. Furthermore, the rehabilitation team, including physiatrists, nurses, physical therapists, social workers and peer supporters, should provide surgical treatment, clinical management, drug therapy and optimal assistance for SCI. We believe that the first important task in the management of SCI patients is precise diagnosis of the site of the spinal cord lesion. This should be followed as soon as possible by spinal surgery to stabilize the vertebral column. The day after surgery, the patient should be handled by the rehabilitation team. Orthostatic loads should be applied, and exercise of the remaining muscles should begin in order to ensure early mobilization and satisfactory repair. Our group has carried out extensive research into the pathophysiology of the cardiovascular, respiratory, endocrine and autonomic nervous systems and exercise responses in SCI, and reported the benefits and improvements of early mobilization and exercise, and the safety of physical medicine and rehabilitation. The rehabilitation team should follow these individuals closely to provide long-term clinical care, and deal with social issues arising during the chronic phase. Participation in sports activities (para-sports) could work well to improve the physical condition of these individuals.

    DOI: 10.1111/cen3.12357

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  • 車いすスポーツアスリートの肘障害実態調査による車いすスポーツ肘障害の予防に関する研究

    中村 健, 西村 行秀, 荒川 英樹, 尾川 貴洋, 三井 利仁

    デサントスポーツ科学   37   43 - 48   2016年6月

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    記述言語:日本語   出版者・発行元:(公財)石本記念デサントスポーツ科学振興財団  

    障がい者スポーツにおける肘障害の詳細な報告はほとんどない.今回,車いすマラソンアスリートの肘障害の実態を解明し,障害予防につなげることを目的とし肘検診を行った.対象は,大分国際車いすマラソン大会の参加選手35名(男性34名,女性1名)を対象とした.肘検診では,運動時痛の有無,圧痛の有無,尺骨神経Tinel徴候の有無,尺骨神経麻痺の有無,関節可動域の測定を行った.運動時痛は,35名中5名に認め,圧痛は,35名中15名に認めた.圧痛の部位は,左外側上顆が15名中14名であった.尺骨神経所見では,Tinel徴候が左側7名,右側6名認め,尺骨神経麻痺を左側2名に認めた.疼痛・圧痛・尺骨神経所見の全てにおいて,右側に比べ左側で多くの異常所見を認めた.左右ともに明らかな可動域制限は認めなかった.今回の肘検診結果より,車いすマラソンアスリートでは,半数近くの割合で,何らかの肘関節症状があることが判明した.更に,圧痛部位としては,外側上顆部で高頻度に認め,肘症状の発症には左右差があり左側に多い可能性があることが判明した.今回の結果は,車いすマラソンアスリートの肘障害予防や指導につながる重要な知見のひとつとなると考えられる.(著者抄録)

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  • パラリンピック競技の実際と障がい者アスリートにおける体質医学的課題

    幸田 剣, 三井 利仁, 伊藤 倫之, 梅本 安則, 河崎 敬, 坂野 元彦, 佐々木 裕介, 中村 健, 田島 文博

    日本体質医学会雑誌   76 ( 1 )   11 - 15   2014年2月

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    記述言語:日本語   出版者・発行元:日本体質医学会  

    2020年東京オリンピック・パラリンピックの開催が決定した。パラリンピックに焦点をあて、障がい者スポーツについて概説し、パラリンピックに向けての障がい者アスリートにおける医科学的課題やスポーツの有用性、体質医学的側面について以下の項目を挙げ説明した。1)障がい者スポーツの歴史、2)パラリンピックにおける日本の成績、3)障がい者スポーツの特殊性、4)メディカルチェックの特質と事例、5)運動に対する体質学的特徴、6)障がい者におけるスポーツの有用性、7)体質変化に関与するマイオカイン、8)障がい者スポーツにおけるマイオカイン。

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    その他リンク: https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2014&ichushi_jid=J03879&link_issn=&doc_id=20140317430002&doc_link_id=%2Fev7taisi%2F2014%2F007601%2F002%2F0011-0015%26dl%3D0&url=http%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fev7taisi%2F2014%2F007601%2F002%2F0011-0015%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

  • Renal function and endocrine responses to arm exercise in euhydrated individuals with spinal cord injury. 国際誌

    Takashi Kawasaki, Takeshi Nakamura, Yusuke Sasaki, Keiko Sakamoto, Tomoyuki Ito, Masaki Goto, Tomoya Shimomatsu, Fumihiro Tajima

    European journal of applied physiology   112 ( 4 )   1537 - 47   2012年4月

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    記述言語:英語  

    This study investigated the renal and endocrine responses to arm exercise in persons with spinal cord injury (SCI) under euhydration conditions (ad libitum drinking of water) and determined the physiological effects of exercise on renal function in these subjects. Eleven SCI (spinal lesions between T6 and L1, American Spinal Injury Association impairment scale A) and 14 able-bodied (AB) persons first rested for 1 h in a sitting position, before undergoing 2-h arm-crank ergometer exercise at 60% of maximum oxygen consumption followed by a 2-h recovery period. On another day, all subjects participated in a time control study (5 h of rest condition in sitting position). Urine and blood samples were collected hourly. There were no differences in mean blood pressure between the two groups. SCI patients showed attenuated increase in plasma adrenaline and increase in plasma aldosterone compared with AB controls, but similar changes in human atrial natriuretic polypeptide, plasma renin activity and plasma antidiuretic hormone following the exercise. Creatinine clearance, osmolal clearance, free water clearance and fractional excretion of Na(+) did not change during exercise in any of the subjects. These findings suggested that activated aldosterone and attenuated adrenaline responses during exercise in SCI could be due to adaptation to disordered sympathetic nervous system triggered to maintain renal function. The results showed no exercise-related adverse effects on renal function in hydrated subjects with SCI.

    DOI: 10.1007/s00421-011-2105-y

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  • 局所温熱刺激時における筋交感神経活動の反応機序

    中村 健, 石田 和也, 坂野 元彦, 西村 行秀, 田島 文博

    末梢神経 = Peripheral nerve   22 ( 2 )   318 - 319   2011年12月

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    記述言語:日本語  

    CiNii Books

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共同研究・競争的資金等の研究課題

  • 膵頭十二指腸切除術の骨格筋量への影響と術前リハビリテーション治療の効果

    研究課題/領域番号:23K10480  2023年4月 - 2026年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    立花 佳枝, 中村 健

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    配分額:4680000円 ( 直接経費:3600000円 、 間接経費:1080000円 )

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  • 心疾患維持期患者におけるデジタルデバイスを利用した運動習慣獲得と医学的効果の検証

    研究課題/領域番号:22K11373  2022年4月 - 2025年3月

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    中村 健, 礒 良崇, 水越 慶

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    配分額:4160000円 ( 直接経費:3200000円 、 間接経費:960000円 )

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  • ICU重症患者における急性期立位・運動負荷の検討

    研究課題/領域番号:15K01384  2015年4月 - 2018年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    田島 文博, 幸田 剣, 西村 行秀, 中村 健, 上條 義一郎

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    配分額:4680000円 ( 直接経費:3600000円 、 間接経費:1080000円 )

    研究の目的は、重症患者に対して起立・運動負荷施行の効果を検証することである。まず、研究を遂行するための起立台を地元企業と作成した。疾患別に取り組む必要があり、脳血管障害例を対象とした。ただし、初診時にはリハビリテーション科医が診察し、熟練した療法士が起立・歩行訓練を施行した(PROr)。その結果、24時間以内にPROrを導入すれば、それ以降施行するよりも有意にFIM利得が大きいことが判明した。

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  • 障がい者スポーツにおける陸上競技アスリートのスポーツ傷害実態調査

    研究課題/領域番号:15K01598  2015年4月 - 2018年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    三井 利仁, 田島 文博, 幸田 剣, 西村 行秀, 梅本 安則, 河崎 敬, 坂野 元彦, 中村 健, 伊藤 倫之

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    配分額:4680000円 ( 直接経費:3600000円 、 間接経費:1080000円 )

    本研究は、車椅子陸上競技を行っている脊髄損傷者の障害者アスリートを対象として、理学的所見と画像診断等により肩関節スポーツ傷害発症の実態について調査した。さらに、練習内容と量を調査しそれぞれの選手のフォームを解析した。それらの結果を総合的に検証し、肩関節スポーツ傷害発症メカニズムを考察し、予防法を検討した。調査項目としては、車椅子選手の肩関節に影響を与えうる要素を全て抽出した。具体的には、1.練習内容、2.練習量、3.車いす駆動フォーム、4.理学的所見、5.画像所見(エコーおよびMRI)、について調査した。

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  • 非侵襲的陽圧換気を使用した体力・健康増進に有効な運動方法の開発

    研究課題/領域番号:15K01382  2015年 - 2017年

    文部科学省  科学研究費補助金(基盤研究(C))  基盤研究(C)

    中村 健

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    担当区分:研究代表者  資金種別:競争的資金

    配分額:4810000円 ( 直接経費:3700000円 、 間接経費:1110000円 )

    若年健常男性に対し、自転車エルゴメーターにより60%最大酸素摂取量の運動負荷で1日30分間の有酸素運動を非侵襲的陽圧換気(NPPV, 12cmH2O)下および非NPPV下で連続5日間施行した。NPPV下と非NPPV下でのトレーニングは、3週間のウオッシュアウト期間を置いて実施した。それぞれ、5日間のトレーニングの前後で、最大酸素摂取量(体力)と脳由来神経栄養因子(BDNF)の測定を実施した。
    最大酸素摂取量は、NPPV下の方が優位に高く上昇し、BDNFはNPPV下でのみ上昇した。
    NPPV下の有酸素運動トレーニングは、最大酸素摂取量とBDNFの上昇を向上させ、健康に有益な作用がある事が示唆された。

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  • 脊髄損傷者の運動時における酸化LDL動態について

    研究課題/領域番号:24500748  2012年4月 - 2015年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    三井 利仁, 田島 文博, 中村 健, 伊藤 倫之, 馬渕 博行

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    配分額:5200000円 ( 直接経費:4000000円 、 間接経費:1200000円 )

    頸髄障害者(CSCI)は副腎髄質への交感神経支配が障害されているために運動時アドレナリン分泌が胸腰髄損傷者(LSCI)より抑制されている。今回の研究で、当初運動による上昇を予想していた酸化LDLがLSCIに比べCSCIで抑制されていた理由として、このアドレナリン分泌の低下が一因であると推察される。
    下部胸髄節交感神経障害があるLSCIには末梢性交感神経障害が存在すると考えられる。結果よりoxLDLがLSCIよりCSCIの方が抑制されていた理由は、このアドレナリン分泌の低下が原因であると推察する。酸化LDLの有意な増加がないことからは、この運動はたとえCSCIにおいても安全であることが示唆された。

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  • 温浴におけるサイトカイン発現に関する研究

    研究課題/領域番号:23590894  2011年 - 2013年

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    田島 文博, 中村 健, 幸田 剣, 幸田 剣

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    配分額:4550000円 ( 直接経費:3500000円 、 間接経費:1050000円 )

    健常成人8名を対象に、30分の安静の後、以下の負荷のいずれかを20分間負荷された、1)室内安静、2)温泉(42℃)全身浴、3)中性温(35℃)全身浴、4)室内運動(最大酸素摂取量の60%)、5)温泉全身浴運動、6)中性温全身浴運動、その後60分の回復期を観察した。全被験者は別の日に上記負荷を全てテストされた。その結果、温泉全身浴と温泉全身浴運動の2つの負荷で負荷60分後に血中IL-6の有意な上昇を認めた。温泉全身浴そのものは運動同様IL-6発現の刺激となる。

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  • 脊髄損傷対麻痺者における運動時Natural Killer Cell活動変動

    研究課題/領域番号:17500368  2005年 - 2006年

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    田島 文博, 中村 健, 峠 康

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    配分額:3600000円 ( 直接経費:3600000円 )

    【目的】健常者における運動時の免疫機能はNatural Killer細胞(NK細胞)活性を指標として、多数の報告がある。しかし、脊髄損傷者においては、我々が車いすフルマラソンではレース直後にNK細胞活性が低下し、ハーフマラソンでは上昇する事が知られているだけである。今回我々は、実験室で運動強度を一定にし、2時間の運動を継続した時の免疫機能の変動を調査した。【方法】対象は男性脊髄損傷者7名(脊損者、年齢34.3±7.1歳、損傷レベルTh11〜L4)と健常男性6名(健常者、年齢28.8±7.7歳)とした。予めハンドエルゴメーターで被験者の最大酸素摂取量(VO2max)を測定した結果、脊損者は27.9±3.0ml/min、健常者は25.7±4.1ml/minであり、両群に有意差を認めなかった。VO2max測定とは別の日に、被験者はそれぞれのVO2maxの60%で2時間ハンドエルゴメーター運動を行った。採血は、運動前、1時間運動後、運動終了直後、終了後2時間の4回行い、白血球数、アドレナリン、NK細胞数、NK細胞活性を測定した。別の日に運動を行わないタイムコントロール実験を行った。【結果】健常者の白血球数と血中アドレナリンは運動直後に有意な上昇を見た。NK細胞数は運動直後の変動は有意ではなかったが、NK細胞活性は運動直後に有意に低下し、2時間後に回復した。【考察】車いすフルマラソンの実験モデルを行い、NK細胞活性は低下した。しかし、NK細胞活性は2時間後には回復した事から、車いすマラソンで選手が感染に留意する時間は数時間で良いと考えられる。

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