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在大学棒球投手中,高和下降与下降和驱动策略相比,用于速度和肘部值扭矩扭矩
Kevin Giordano1, Adam R Nebel2, Anthony Fava2
1Louisiana State Health Science Center, Department of Physical Therapy, New Orleans, Louisiana, USA.
The American journal of sports medicine
|September 26, 2024
概括
投篮步伐策略如"高而下"可以增加快球速度,但不会增加肘部扭矩,这表明它们可以提高表现,而不会增加大学投手的受伤风险.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 棒球分析 棒球分析
背景情况:
- 投球步伐策略,分为"高而落"或"下降而驱动",被大学棒球投手用来最大限度地提高投球速度.
- 这些策略受到个人人体测量和教练风格的影响.
研究的目的:
- 调查步伐策略 (高和下降与下降和驱动) 对大学棒球投手的投篮速度和肘部扭矩的影响.
- 为了测试假设,增加对"高和下降"技术的坚持将与更高的投球速度和肘部扭矩相关.
主要方法:
- 一项受控的实验室研究涉及64名大学投手,他们在比赛中使用无标记运动捕捉.
- 分析身体质量中心 (COM) 垂直移位的峰值,使用从膝盖高度峰值到脚接触的直线轨迹.
- 多级建模以评估垂直COM位移 (正和负) 与其定时与俯冲速度和肘扭矩之间的关联.
主要成果:
- 增加的正负垂直质量中心 (COM) 位移与更高的快球速度有关.
- 峰值正COM位移的时间也有助于预测快球速度.
- 垂直COM位移并没有与肘扭矩有显著的关联.
结论:
- 更大的垂直COM位移,无论是向上还是向下运动,都提高了投手的快球速度.
- 脚步机制似乎是提高表现的一个因素,而不是直接指标关节附带带损伤风险.
- 临床医生应避免将步伐机制作为伤害风险评估或诊断在大学棒球投手中的唯一因素.
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