Electromyographic analysis of the glenohumeral muscles during a baseball rehabilitation program
Electromyographic analysis of the glenohumeral muscles during a baseball rehabilitation program
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棒球康复计划期间盂肱肌的肌电图分析
DOI：
10.1177/036354659101900309
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
J. Perry
中科院分区：
文献类型：
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作者：
H. Townsend;F. Jobe;M. Pink;J. Perry
许多练习用于增强盂肌，但评估这些练习的研究有限。因此，本研究的目的是确定如何在投掷运动员的康复计划中最好地锻炼负责肱骨运动的肌肉。对 15 名正常男性志愿者进行了动态细线肌内肌电图检查，这些志愿者进行了 17 项肩部锻炼，这些锻炼源自职业棒球俱乐部使用的肩部康复计划。研究了四块肩袖肌肉以及肱骨的其他定位肌，包括胸大肌、背阔肌和三角肌的三个部分。肌电活动与电影摄影同步，平均运动弧度超过 30°。如果一次锻炼在三个连续弧线（即 90° 范围）内产生至少 50% 的预定最大收缩，则该锻炼被认为对肌肉来说是一项重大挑战。有四种练习始终被认为是对每块肌肉最具挑战性的练习之一。这些肩部练习包括 1) 拇指向下在肩胛平面上抬高，2) 屈曲，3) 水平外展，手臂外旋，以及 4) 上压。这项研究证明，盂肱肌有效且简洁的康复方案至少应包括这些练习。
Many exercises are used to strengthen the glenohu meral muscles, but there have been limited studies to evaluate the exercises. Thus, the purpose of this study was to decide how the muscles responsible for humeral motion can best be exercised in a rehabilitation program for the throwing athlete. Dynamic, fine wire, intramus cular electromyography was carried out in 15 normal male volunteers performing 17 shoulder exercises de rived from a shoulder rehabilitation program used by professional baseball clubs. The four rotator cuff mus cles were studied, as well as other positioners of the humerus, including the pectoralis major, latissimus dorsi, and three portions of the deltoid. The electro myographic activity was synchronized with cinematog raphy and averaged over 30° arcs of motion. An exer cise was considered to be a significant challenge for a muscle if it generated at least 50% of its predetermined maximum contraction over three consecutive arcs (i.e., a 90° range). Four exercises were consistently found to be among the most challenging exercises for every muscle. These shoulder exercises consisted of 1) ele vation in the scapular plane with thumbs down, 2) flexion, 3) horizontal abduction with arms externally rotated, and 4) press-up. This study documents that the minimum for an effective and succinct rehabilitation protocol for the glenohumeral muscles would include these exercises.