评估一种方法来估计在跑步的支持阶段的脚转动时刻
Journal of the American Podiatric Medical Association
|November 7, 2023
概括
运行时的外部反转时刻可以使用垂直地面反应力 (GRF) 数据准确估计. 这一发现甚至在使用常态数据时也是如此,简化了下肢过度使用伤害的伤害风险评估.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 伤害预防 预防伤害
背景情况:
- 在跑步期间过度脚动的时刻与下肢过度使用伤害有关.
- 垂直地面反应力 (GRF) 被认为是这些时刻的主要贡献者.
- 之前的研究并没有直接验证从垂直GRF估计变动时刻的估计准确性.
研究的目的:
- 为了评估运行时使用垂直GRF估计外部反转矩的准确性.
- 为了确定计算的恒时时刻和从垂直GRF中得出的恒时时刻之间的相关性.
主要方法:
- 收集了28名健康跑步者的3D脚坐标和GRF数据.
- 在运行过程中计算的外部反转时刻 (EMrun),脚坐标 (ANKrun),压力中心 (COPrun) 和垂直GRF (VGRFrun).
- 在站立时还获得了脚关节坐标 (ANKstand) 和垂直GRF (VGRFstand).
主要成果:
- 在运行过程中从垂直GRF估计的EMrun和eversion矩之间发现了很强的相关性 (84.7%).
- 在使用常用GRF数据时也观察到显著的相关性 (81.5%).
- 这些结果表明,在估计反转时刻方面,其准确度很高.
结论:
- 运行时的外部反转时刻可以从垂直GRF可靠地估计.
- 估计准确度仍然很高,即使用常态数据替换运行数据.
- 这种简化方法可以帮助评估和预防与跑步有关的伤害.
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