https://scholars.lib.ntu.edu.tw/handle/123456789/615945
標題: | Glenohumeral Internal Rotation Deficit on Pitching Biomechanics and Muscle Activity | 作者: | Weng, Yi-Hsuan Huang, Tsun-Shun CHENG-YA HUANG Chen, Hsing-Yu Tsai, Yung-Shen JIU-JENQ LIN |
關鍵字: | scapular kinematics; triceps brachii; serratus anterior; cocking phase; acceleration phase; SCHOOL BASEBALL PLAYERS; UPPER EXTREMITY; SCAPULAR POSITION; SHOULDER INJURIES; ELBOW INJURIES; PASSIVE RANGE; MOTION; KINEMATICS; JOINT; EPIDEMIOLOGY | 公開日期: | 六月-2022 | 出版社: | GEORG THIEME VERLAG KG | 卷: | 43 | 期: | 6 | 起(迄)頁: | 538 | 來源出版物: | International journal of sports medicine | 摘要: | To characterize the scapular pitching biomechanics in symptomatic GIRD pitchers (SG) compared to asymptomatic GIRD (ASG) and healthy pitchers. The scapular kinematics and associated muscle activities during pitching were recorded in 33 high school pitchers. Compared to healthy, GIRD pitchers had less scapular posterior tilt in each pitching event (average difference, AD=14.4°, p<0.01) and ASG demonstrated less scapular upward rotation at ball release (AD=12.8°, p<0.01) and greater muscle activity in the triceps brachii in the early-cocking phase (AD=9.9%, p=0.015) and in the serratus anterior in the late-cocking phase (AD=30.8%, p<0.01). Additionally, SG had less muscular activity on triceps brachii in the acceleration phase and serratus anterior in the cocking phase (AD=37.8%, p=0.016; AD=15.5%, p<0.01, respectively) compared to ASG. GIRD pitchers exhibited less scapular posterior tilt during pitching, which may cause impingement. Since tightness of the anterior shoulder is a common cause of inadequacy of posterior tilt during arm elevation, stretching exercise of the anterior shoulder is recommended. Given the inadequate recruitment during pitching in the GIRD pitchers, symptoms may develop following potential impingement. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/615945 | ISSN: | 0172-4622 | DOI: | 10.1055/a-1667-6080 |
顯示於: | 物理治療學系所 |
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