Electromyographic analysis of the rotator cuff and deltoid musculature during common shoulder external rotation exercises
Electromyographic analysis of the rotator cuff and deltoid musculature during common shoulder external rotation exercises
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DOI：
10.2519/jospt.2004.34.7.385
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发表时间：
2004-07-01
影响因子：
6.1
通讯作者：
Andrews, JR
中科院分区：
文献类型：
--
作者：
Reinold, MM;Wilk, KE;Andrews, JR
研究设计：前瞻性单组重复测量设计。目的：在通常用于加强肩外旋肌的锻炼过程中，量化冈下肌、小圆肌、冈上肌、后三角肌和中三角肌的肌电图（EMG）肌肉活动。背景：在康复中，通常规定加强外旋肌的锻炼，但冈下肌、小圆肌、冈上肌、方法和措施：对10名健康受试者在7种肩部运动中使用肌内电极测量的EMG进行了分析：外展100 °和完全外旋（ER）时的俯卧水平外展，外展90 °时的俯卧ER，外展90 °时的站立ER，ER站立于肩胛平面（45 °外展，30 °水平内收），ER站立于0 °外展，ER站立于0 °外展，ER站立于0 °外展，ER站立于0 °外展，ER侧卧于0 °外展。采用单因素重复测量方差分析比较不同运动中每块肌肉最大随意等长收缩（MVIC）的峰值百分比（P
Study Design: Prospective single-group repeated-measures design.Objectives: To quantify electromyographic (EMG) muscle activity of the infraspinatus, teres minor, supraspinatus, posterior deltoid, and middle deltoid during exercises commonly used to strengthen the shoulder external rotators.Background: Exercises to strengthen the external rotators are commonly prescribed in rehabilitation, but the amount of EMG activity of the infraspinatus, teres minor, supraspinatus, and deltoid during these exercises has not been thoroughly studied to determine which exercises would be most effective to achieve strength gains.Methods and Measures: EMG measured using intramuscular electrodes were analyzed in 10 healthy subjects during 7 shoulder exercises: prone horizontal abduction at 100degrees of abduction and full external rotation (ER), prone ER at 90degrees of abduction, standing ER at 90degrees of abduction, standing ER in the scapular plane (45degrees abduction, 30degrees horizontal adduction), standing ER at 0degrees of abduction, standing ER at 0degrees of abduction with a towel roll, and sidelying ER at 0degrees of abduction. The peak percentage of maximal voluntary isometric contraction (MVIC) for each muscle was compared among exercises using a 1-way repeated-measures analysis of variance (P