An electromyographic analysis of the upper extremity in pitching.
An electromyographic analysis of the upper extremity in pitching.
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DOI：
10.1016/s1058-2746(09)80011-6
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发表时间：
1992-01-01
影响因子：
3
通讯作者：
Perry, J
中科院分区：
文献类型：
--
作者：
Digiovine, N M;Jobe, F W;Perry, J
在棒球投球过程中，上肢容易受伤，因为动作的重复性、运动范围的极端性以及在肩部和肘部产生的高角速度和扭矩。因此，本研究的目的是描述肌肉放电模式，通过细线肌电图在29个肌肉腹部的上肢熟练投手在快速球投球。结果表明，肌肉在关节稳定以防止损伤、关节激活以将力传递到球以及关节减速以在球释放后消散力的精确定时下起作用。完成这些功能所需的相互和顺序肌肉收缩的同步性是显而易见的。这项研究提供了一个更好的了解在投掷运动过程中的肌肉活动的协调顺序，这种理解是至关重要的运动方案和外科手术的发展，用于治疗和预防肩关节和肘部受伤的投掷运动员。
The upper extremity is vulnerable to injury during the baseball pitch because of the repetitious nature of the action, the extremes in range of motion, and the high angular velocities and torques generated at the shoulder and elbow. Hence this study was designed to describe the muscle-firing patterns through fine-wire electromyography in 29 muscle bellies in the upper extremities of skilled pitchers during the fastball pitch. The results demonstrated that the muscles functioned with precise timing for joint stabilization to prevent injury, joint activation to transfer forces to the ball, and joint deceleration to dissipate forces after ball release. The synchrony of reciprocal and sequential muscle contraction necessary to accomplish these functions was clearly evident. This study provides a better understanding of the coordinated sequence of muscle activity during the throwing motion; this understanding is crucial to the development of exercise protocols and surgical procedures used for treatment and prevention of shoulder and elbow injuries in the throwing athlete.