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重力作为协调动态中的上下文控制参数:在抛物线飞行过程中相位特异稳定性.

Madison M Weinrich1, Osmar P Neto2, Rashika Rao3

  • 1Department of Kinesiology and Sport Management, Texas A&M University, TX, USA.

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引力显著影响人类的运动控制,改变双手任务期间的协调模式. 这项研究揭示了重力作为控制参数,在不同的引力中重塑运动稳定性.

关键词:
改变重力的重力.双人协调 双人协调微重力是一种微重力.抛物线飞行飞行 抛物线飞行

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科学领域:

  • 运动控制和协调动力学
  • 人体生理在改变重力的环境下

背景情况:

  • 协调动力学解释了运动模式是如何从相互作用的约束中出现的.
  • 哈肯-凯尔索-邦兹 (HKB) 模型预测了相位 (0°),反相位 (180°) 和90°协调模式的稳定性.
  • 尽管已知视觉和触觉反的作用,但重力对这些动态的影响在很大程度上尚未被探索.

研究的目的:

  • 研究重力作为人类协调动态中的上下文控制参数的作用.
  • 为了确定不同的引力如何重塑双手协调模式的稳定性.
  • 评估微重力,部分重力和地球重力对机动性能的影响.

主要方法:

  • 参与者执行了双手对称力任务,在0°,90°和180°相对阶段进行Lissajous反.
  • 在抛物线飞行期间进行了实验,模拟了微重力 (0 g) 和部分重力 (0.25-0.75 g),以及1 g (地球重力).
  • 评估了协调准确性,偏差,稳定性,以及非手动定时和力控制.

主要成果:

  • 在1g时,性能与HKB预测一致 (0°最稳定,90°最不稳定).
  • 微重力使协调不稳定,导致变化增加,并朝着0°模式漂移.
  • 部分重力部分恢复了90°和180°任务的稳定性,更高的g级提高了性能.

结论:

  • 重力作为一个分级的,取决于任务的控制参数,影响协调格局.
  • 改变的重力环境显著重塑了运动控制的动态.
  • 这些发现对太空和其他重力变化的环境中的运动性能和训练策略有影响.