Baseball batting. An electromyographic study.
Baseball batting. An electromyographic study.
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棒球击球。
DOI：
10.1097/00003086-199307000-00038
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发表时间：
1993
影响因子：
4.2
通讯作者：
J. Perry
中科院分区：
文献类型：
--
作者：
B. Shaffer;F. Jobe;M. Pink;J. Perry
本研究描述了击球挥杆过程中，人体下肢、躯干和上肢的12块肌肉的肌肉放电模式。所研究的两条腿筋肌和臀肌在摆动前和摆动早期具有相似的高肌肉活动模式，然后迅速减弱。在整个摆动阶段和后续阶段，股内侧肌在最大肌肉测试(MMT)95%到110%之间表现出峰值活动。竖棘在摇摆期的活动范围为85%~185%。在摇摆期和随访期，腹部斜度均大于100%。冈上肌和前锯肌的肌肉活动相对较低(MMT<40%)。这些结果表明，击球是一系列协调的肌肉活动，从臀部开始，然后是躯干，最后是手臂。挥杆中的力量是从臀部开始的，因此强调这种力量发展的练习是必要的。躯干肌肉中保持的高度肌肉活动表明需要背部和腹部的稳定和旋转练习。测试的四块肩周肌的活动水平相对较低，这表明击球手的强化计划应该侧重于躯干和臀部肌肉。
The muscle firing pattern in 12 muscles throughout the lower extremity, trunk, and upper extremity during the batting swing is described in this study. The two hamstring muscles studied and the gluteal muscle had a similar pattern of high muscle activity during pre-swing and early swing, and then rapidly diminished. The vastus medialis demonstrated peak activity between 95 and 110% maximum muscle test (MMT) throughout the swing phases and follow-through. The erector spinae demonstrated activity from 85 to 185% MMT during the swing phases. The abdominal obliques showed greater than 100% MMT during the swing phases and follow-through. The supraspinatus and serratus anterior showed relatively low muscle activity (less than 40% MMT). These results show that batting is a sequence of coordinated muscle activity, beginning with the hip, followed by the trunk, and terminating with the arms. Power in the swing is initiated in the hip, and therefore exercises that emphasize such strength development are indicated. The maintained, high muscle activity in the trunk muscles indicates a need for back and abdominal stabilization and rotation exercises. The relatively low level of activity in the four scapulohumeral muscles tested indicated that emphasis should be placed on the trunk and hip muscles for a batter's strengthening program.