改变计划中的脚位对平衡控制和前进进度的影响
Nicholas Kreter1, Peter C Fino1
1Department of Health and Kinesiology, University of Utah, Salt Lake City, UT 84112, USA.
Journal of the Royal Society, Interface
|February 13, 2024
概括
当出现意想不到的障碍时,人类优先考虑平衡而不是前进速度. 这项关于步态控制的研究揭示了快速脚位调整如何影响行走和转动期间身体质量动态中心.
科学领域:
- 生物力学 生物力学
- 人类运动控制器
- 步态分析 步态分析
背景情况:
- 人类在行走时提前计划脚部的位置.
- 快速改变脚位以避开障碍物可以显著影响质量中心 (CoM).
- 了解这些影响对于步态控制和平衡研究至关重要.
研究的目的:
- 为了研究快速脚位变化对质量中心动态的影响.
- 为了检查这些变化如何影响平衡和前进在直行和转动步行的进展.
- 为了比较直立与转动步态修改期间的反应.
主要方法:
- 十三名年轻人走在一个虚拟的步道上,有精确的脚.
- 参与者进行了直立和转动步态 (60°,90°,120°转动).
- 在某些试验中,参与者必须快速改变脚部位置,以避免指定脚.
主要成果:
- 当质量动态中心被破坏时,参与者优先考虑保持直立稳定,而不是前进.
- 与直行相比,步行者在转动过程中不同地调整了他们的质量控制中心,以抑制步骤.
- 在转动时改变脚位对任务的成功提出了比直行时更大的挑战.
结论:
- 当面对意想不到的干扰时,人类步行控制优先考虑稳定性而不是前进势头.
- 对质量中心动态的控制策略在脚位改变时,在直行和转行之间有所不同.
- 被打断的转对步行成功构成更高的风险,需要进行明显的控制调整.
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