模拟揭示了触控动力学变量如何影响顶级冲刺速度:对教练的含义
Nicos Haralabidis1, Ashton J Eaton2, Scott L Delp
1Department of Bioengineering, Stanford University, Stanford, CA.
Medicine and science in sports and exercise
|July 3, 2025
概括
教练应该专注于水平触地距离 (HTD) 来提高冲刺速度,因为模拟显示存在最佳HTD. 在这项研究中,膝关节间触地距离 (IKTD) 的调整没有显著影响冲刺速度.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人类运动 人类运动
背景情况:
- 冲刺表现对运动员和教练来说至关重要.
- 像水平触地距离 (HTD) 和膝盖间触地距离 (IKTD) 这样的动力学变量是提高冲刺速度的关键目标.
- 之前对这些变量的研究产生了相互矛盾的结果,阻碍了建立明确的因果关系.
研究的目的:
- 使用预测模拟方法研究HTD,IKTD和冲刺速度之间的因果关系.
- 为了确定HTD和IKTD的特定调整是否可以提高顶级冲刺速度.
- 为进一步研究冲刺生物力学提供一个模拟框架.
主要方法:
- 采用预测模拟方法,使用国际男性短跑运动员的缩放3D肌肉骨模型.
- 一个直接配置的最佳控制框架生成了单个对称的极速冲刺步骤的模拟.
- 运行模拟以确定最佳最高速度,然后进行模拟,强制改变HTD和IKTD (±2,4,6厘米).
主要成果:
- 最佳的模拟实现了11.85米/秒的最高冲刺速度.
- 将HTD缩短6厘米,速度降低了7.3%,而将其延长6厘米,速度降低了只有1.6%.
- 在测试范围 (±2,4,6厘米) 内改变IKTD对模拟冲刺速度没有显著影响.
结论:
- 一个最佳的水平触地距离 (HTD) 存在,以最大限度地提高冲刺速度,支持其作为教练和运动员的技术重点的使用.
- 调整膝关节间接触距离 (IKTD) 似乎不是提高冲刺速度的有效策略.
- 开发的模拟框架是公开可用的,以进一步探索冲刺生物力学和性能优化.
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