由于在微重力环境中跳跃而导致着陆的分段间协调发生变化
Thibaut D Toussaint1, Jean-Matthieu Pypaert1, Clément N Gambelli1,2
1Laboratoire de Physiologie et Biomécanique de la Locomotion, Institute of NeuroScience, Université catholique de Louvain, Louvain-la-Neuve, Belgium.
Journal of applied physiology (Bethesda, Md. : 1985)
|February 28, 2025
概括
人类着陆协调由群众控制中心调整. 在模拟的微重力中,协调变得不那么可预测,肢体贡献的调整表明感官重权.
科学领域:
- 生物力学 生物力学
- 人类运动控制器
- 引力生理学 引力生理学
背景情况:
- 了解跨细分协调对于分析人类运动至关重要.
- 重力显著影响运动控制策略.
- 之前的研究已经探索了在重力变化的运动适应,但着陆协调需要进一步的研究.
研究的目的:
- 调查在各种引力环境下反运动跳跃着陆期间的分段间协调.
- 了解人类对重力的感知及其对复杂运动任务的影响.
- 确定控制着陆协调的关键参数.
主要方法:
- 八名参与者在地球重力 (1g) 下进行了反运动跳跃,并在抛物线飞行期间使用拉下系统模拟了重力水平 (0.2-1g).
- 高速摄像机记录了身体部分的方向 (脚,腿部,大腿,干).
- 主要组件分析和相关性分析被用来评估跨细分协调.
主要成果:
- 观察到一个连贯的分段间协调规律,由质量中心的垂直位置控制,跨越所有重力级别.
- 脚部运动显示出最小的贡献和与腿部的不良相关性,表明相对独立.
- 无重量时的协调不那么单维,而且比地球时更可变.
- 较低的模拟重力增加了脚和腿部的贡献,同时减少了大腿的贡献,表明感官重权.
结论:
- 跨细分协调是针对地球引力的优化,但在模拟的无重量状态中保持了一个单维的协同作用.
- 观察到的微重力调整表明,需要重新权衡感官输入,以适应运动控制.
- 人类运动控制在改变的引力环境中表现出适应性,但也表现出潜在的次优性.
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