- 著者
- Aoi MATSUMURA Hiroshige TATEUCHI Masatoshi NAKAMURA Noriaki ICHIHASHI
- 出版者
- Japanese Society of Physical Therapy
- 雑誌
- Physical Therapy Research (ISSN:21898448)
- 巻号頁・発行日
- vol.26, no.2, pp.58-64, 2023 (Released:2023-08-20)
- 参考文献数
- 29
Objective: Generally, low-intensity training is recommended as selective training of the infraspinatus muscle. This study aimed to investigate whether an 8-week intervention of low-intensity, slow-movement, external rotation exercise of the shoulder led to an increase in muscle strength with shoulder external rotation and cross-sectional area (CSA) infraspinatus muscle. Methods: Sixteen healthy male volunteers were randomly assigned to the low-intensity and slow-movement (LS) group (N = 8) or the normal-intensity and normal-speed (NN) group (N = 8). The LS and NN groups performed shoulder external rotation exercises with low intensity and slow movement, and normal intensity and normal speed, respectively. The exercise session consisted of three sets of 10 repetitions, which were performed three times per week for 8 weeks. We measured the CSA of the infraspinatus and muscle strength of the shoulder external rotation before and after the 8-week intervention. Results: A significant increase in infraspinatus CSA from baseline to 8 weeks was found in the LS group (7.3% of baseline) but not in the NN group. No significant differences were found in the muscle strength of shoulder external rotation. Conclusion: Our results suggest that low-intensity exercise of the infraspinatus is effective for muscle hypertrophy when performed with slow movement. This finding may help patients who should avoid excessive stress in the early phase of rehabilitation.
- 著者
- Aoi MATSUMURA Hiroshige TATEUCHI Masatoshi NAKAMURA Noriaki ICHIHASHI
- 出版者
- Japanese Society of Physical Therapy
- 雑誌
- Physical Therapy Research (ISSN:21898448)
- 巻号頁・発行日
- pp.E10227, (Released:2023-04-22)
- 参考文献数
- 29
Objective: Generally, low-intensity training is recommended as selective training of the infraspinatus muscle. This study aimed to investigate whether an 8-week intervention of low-intensity, slow-movement, external rotation exercise of the shoulder led to an increase in muscle strength with shoulder external rotation and cross-sectional area (CSA) infraspinatus muscle. Methods: Sixteen healthy male volunteers were randomly assigned to the low-intensity and slow-movement (LS) group (N = 8) or the normal-intensity and normal-speed (NN) group (N = 8). The LS and NN groups performed shoulder external rotation exercises with low intensity and slow movement, and normal intensity and normal speed, respectively. The exercise session consisted of three sets of 10 repetitions, which were performed three times per week for 8 weeks. We measured the CSA of the infraspinatus and muscle strength of the shoulder external rotation before and after the 8-week intervention. Results: A significant increase in infraspinatus CSA from baseline to 8 weeks was found in the LS group (7.3% of baseline) but not in the NN group. No significant differences were found in the muscle strength of shoulder external rotation. Conclusion: Our results suggest that low-intensity exercise of the infraspinatus is effective for muscle hypertrophy when performed with slow movement. This finding may help patients who should avoid excessive stress in the early phase of rehabilitation.
- 著者
- 松村 葵 Aoi Matsumura
- 出版者
- 同志社大学
- 巻号頁・発行日
- 2019-03-22
本論文の目的は,体表から無侵襲に肩甲骨運動を推定する方法を確立すること,肩甲骨運動を拡大する運動介入としての肩甲骨エクササイズを明らかにすること,そのエクササイズが投球動作中の肩甲骨運動に与える即時的な効果を検討することとした.その結果,本研究で考案した推定方法によって肩甲骨姿勢の推定精度は向上した.また体幹運動をともなった肩甲骨エクササイズによって投球動作中の肩甲骨後傾運動が増加した.