长距离跑步时足部占位对下肢冲击加速度和动态稳定的影响
Liangliang Xiang1,2,3, Yaodong Gu1,2,3, Alan Wang3,4
1Faculty of Sports Science, Ningbo University, Ningbo, China.
Acta of bioengineering and biomechanics
|June 21, 2023
概括
在跑步时增加脚的位会增加部冲击加速,但不会影响跑步的不稳定性. 这项研究探讨了脚的姿势.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 运行科学 运行科学
背景情况:
- 跑步过程中足部占位是影响下肢功能的一个关键因素.
- 了解脚姿势,步态变化和冲击负荷之间的关系对于预防伤害至关重要.
研究的目的:
- 为了研究脚姿势对冲击负荷和运行变化的影响.
- 为了确定足部占位如何影响长时间跑步期间的生物力学变化.
主要方法:
- 记录了25名男性跑步者的足压力,四肢加速和标记轨迹.
- 在1,4,7和10公里跑步距离收集数据.
- 统计分析采用线性混合效应模型.
主要成果:
- 脚姿势尺度-6 (FPI-6) 在跑步10公里后显著增加 (p<0.01).
- 尖加速在10公里后显著增加,而4公里后则显著增加 (p=0.02).
- 运行不稳定性,用最大的利亚普诺夫指数 (LyE) 测量,在4公里和10公里后,骨下降 (p<0.01,p=0.01).
结论:
- 在中期和终端距离跑步时发生了显著的脚.
- 远距离跑步期间的足部发声与远距离骨峰值冲击加速的增加有关.
- 增加的脚并没有导致更大的跑步不稳定性.
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