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投球障害は投球側下肢関節機能低下によって引き起こされることも多く,下肢関節機能の評価は重要である.しかし,投球動作中の下肢における経時的な筋活動パターンは不明なため,筋電図と三次元動作解析装置を用いて検討した.大腿筋膜張筋と中殿筋の筋活動は並進運動直前にピークを示した.長内転筋と大腿直筋の筋活動は非投球側下肢の接地直後にピークを示した.長内転筋は過剰な並進運動の制動と,骨盤の回旋に作用すると考えられる.
The evaluation of lower extremity function is important for throwing disorders. The purpose of this study was to investigate the muscle activation patterns around hip during pitching motion by three-dimensional motion analysis system synchronized with surface electromyography. The timing of peak tensor fasciae latae and gluteus medius activities was before maximum knee elevation of non-dominant lower extremity in wind-up phase. The timing of peak adductor longus(AL) and rectus femoris(RF) activities was immediately after non-dominant foot contact. This study suggested that AL could put a brake on moving body to the catcher excessively and help the pelvis rotating in the direction of throwing.
雑誌名
同志社スポーツ健康科学
雑誌名(英)
Doshisha Journal of Health and Sports Science
号
6
ページ
24 - 28
発行年
2014-06-03
出版者
同志社大学スポーツ健康科学会
出版者（英）
Society of Health and Sports Science, Doshisha University
ISSN
18834132
書誌レコードID
AA12384109
権利
同志社大学スポーツ健康科学会
権利（英）
Society of Health and Sports Science, Doshisha University
投球動作における投球側股関節周囲筋の経時的な筋活動パターンについて
043000060004.pdf
(1.15MB)
