肩関節
Online ISSN : 1881-6363
Print ISSN : 0910-4461
ISSN-L : 0910-4461
少年野球選手の肩関節内旋可動域の減少
岩堀 裕介加藤 真佐藤 啓二花村 浩克
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2003 年 27 巻 2 号 p. 415-419

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We measured the range of internal and external rotation of the shoulders and evaluated the effect of shoulder stretching in little league baseball players. Physical examinations were performed on fifty-two little league baseball players (range of age, nine to twelve years old), and measurements of the range of shoulder rotation were made with the patients supine and the shoulder at 90° abduction. Twenty-nine players, themselves and their partners were shown how to shoulder stretch and the effect of the stretching was evaluated. They demonstrated a significantly increased external rotation and a significantly decreased internal rotation range of motion compared with the opposite shoulders. The significant differences were found in all ages. Self stretching showed the least effect, while significant increased internal rotation was obtained by partner stretching. We found a significant loss of internal rotation of the throwing shoulders even in little league baseball players. Partner stretching was useful for recovery of the motion loss.

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