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高中投手在快球和换球过程中产生的线性和角度冲动.
Samantha Gajda1, Jun Ming Liu1, Janine Molino2
1Stevens Institute of Technology, Hoboken, NJ, USA.
Journal of biomechanics
|January 26, 2025
概括
高中投手在快球和换球中更多地使用后腿来产生动力. 尽管球速有差异,但投球类型之间的冲动产生没有显著的群体水平差异.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 棒球投球力学 棒球投球力学
背景情况:
- 棒球投手使用地面反应力产生动力,以获得最佳性能.
- 投手们使用快球来获得速度,而用于欺骗的则是换球,这需要不同的机制.
- 了解全身动量产生对于分析投球效率至关重要.
研究的目的:
- 为了确定每个腿在高中投手的冲动生成中的作用.
- 为了比较快球和换球之间的冲动生成.
- 为了研究净冲动和球速度之间的关系.
主要方法:
- 在快球和换球期间,对高中投手的全身动量生成的分析.
- 利用线性混合模型来评估领和后腿之间的冲动生成差异.
- 他比较了快球和换球之间的净线性和角度冲动,并将它们与球的速度相关联.
主要成果:
- 后腿对前线直线冲动和角冲动的贡献明显大于前腿,对于这两种投球类型.
- 在快球和换球之间,在净向前线性冲动或角度冲动中没有发现显著的群体级别差异.
- 对于两种球场类型,球速和净冲动之间没有发现显著的群体级别关联,尽管存在个体趋势.
结论:
- 投球机制强调后腿对冲动产生贡献,无论投球类型 (快球与换球).
- 观察到,球场类型之间在冲动生成方面没有显著的组级差异,这表明其他因素也会影响球速.
- 进一步的研究可能会探索个体变化和其他影响投球速度和欺骗的生物力学因素.
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