在职业棒球投手中,股曲的生物力学分析
Joseph Manzi1, Brittany Dowling2, Jarred Chow3
1Department of Orthopaedics, Lenox Hill Hospital, New York, New York.
Sports health
|January 19, 2026
概括
对于棒球投手来说,在最大肩部外部旋转 (MER) 时保持90°附近的部曲至关重要. 最佳的部曲可以减少肩膀和肘部的压力,防止受伤并提高性能.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 棒球表现 棒球表现
背景情况:
- 在投球过程中,被动运动范围 (ROM) 的限制和领先部的力量增加了职业棒球投手的受伤风险.
- 这种风险延伸到核心,沟和抛肩.
研究的目的:
- 为了研究在最大肩部外部旋转 (MER) 和投球速度时的部曲之间的关系.
- 为了建立在投球运动期间领先的部屈曲角度的规范值.
主要方法:
- 一项涉及职业棒球投手的描述性实验室研究.
- 投手被分为低 (<85°),中等 (85-95°) 和高 (>95°) 组,根据MER的腰曲.
- 用三维运动捕捉 (480 Hz) 来分析快球投球机制.
主要成果:
- 两组之间没有发现年龄,体重,身高或手投的显著差异.
- 与其他组相比,低部曲器表现出较少的MER,更短的步伐长度和改变的膝动力学.
- 低部曲器体验到比中等部曲器更大的肩膀和肘部前部力和肘部曲扭矩.
结论:
- 在MER中,中度的腰曲 (大约90°) 与肩膀和肘部力量的减少有关.
- 在MER和生物力学效率或球速度之间没有发现有意义的关系.
- 投手可以在MER中保持腰曲在最佳范围内,因为极端可能是不利的.
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