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重新检查在跑步过程中足部冲击角度和早期姿势负荷变量之间的关系

Caleb D Johnson¹, Torstein E Dæhlin², Lauren K Sara

¹Military Performance Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA.

Medicine and science in sports and exercise

|May 27, 2025

概括

非线性模型准确地描述了跑步过程中脚冲击角度 (FSA) 和垂直腿/骨运动之间的关系. 跑步经验会影响这些动态,极端的脚会比中等的运动减少运动.

科学领域:

生物力学生物力学
运动科学运动科学运动科学
运行动力学运行动力学

背景情况:

了解足部冲击角度 (FSA) 和垂直负载率 (VLR) /垂直运动加速度 (VTA) 之间的关系对于跑步者的伤害预防至关重要.
之前的模型经常假设线性关系,可能过度简化了复杂的生物力学相互作用.

研究的目的:

为了比较非线性和零碎线性模型来表示FSA和VLR/VTA在运行过程中的关系.
研究竞争性跑步经验对这些生物力学参数的影响.

主要方法:

475名美国陆军学员在带仪器的跑步机上进行了跑步步态度评估.
垂直腿部/骨运动 (VLR,VTA) 和足部冲击角度 (FSA) 用力板,加速度计和高速摄像头进行测量.
采用了多重回归分析,包括非线性和零碎术语,以控制运行经验.

主要成果:

在FSA和VLR (R2=0.25) 和VTA (R2=0.14) 之间观察到一个显著的非线性,二次关系.
跑步经验对模型产生了重大影响,经验丰富的跑步者具有更好的预测性适应性 (VLR:R2=0.38;VTA:R2=0.16).
零碎的线性模型产生了与二级模型相似的结果.

结论:

非线性或零碎线性模型有效地代表了VALR/VTA和FSA之间的复杂关系.
非常低 (前脚) 和非常高 (后脚) 的FSA与VLR/VTA的减少有关,相比之下,中等程度的足球击球模式.

关键词:

足打的模式足打模式盖伊特 (GAITIT) 是一个地面反应力量的地面反应力量.运动学运动学

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