在双步达到任务期间平衡约束的影响
Christopher Moya-Jofré1, Juan José Mariman2, Trinidad Bruna-Melo3
1Neurorehabilitation and Motor Control Lab, Faculty of Medicine, Universidad de Chile, Chile; Biomechanics Laboratory, Physical Therapy, Hospital del Trabajador, Chile; Biomechanics Laboratory, School of Physical Therapy, Universidad Santo Tomas, Chile.
Gait & posture
|June 16, 2024
概括
姿势稳定性影响上肢控制,影响手指和平衡运动,但不影响屏幕性能. 快速变化的目标对运动和平衡控制都有影响.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 上肢任务需要在不稳定的姿势情况下快速纠正手.
- 上肢任务的准确执行依赖于集成的姿势和达到控制机制.
研究的目的:
- 为了研究不同的姿势稳定条件如何影响上肢运动性能在达到动态目标任务时.
主要方法:
- 19名参与者执行了达到目标的任务,这些目标在不同的时间间隔 (200或600 ms) 改变了位置.
- 任务在各种姿势条件下进行:双脚在坚固的表面上,双脚在泡上,和单脚在泡上.
- 收集的数据包括屏幕性能 (运动时间,空间误差),平衡指标 (压力位移中心) 和食指动力学.
主要成果:
- 增加的姿势不稳定性影响了手指动力学和压力中心 (CoP) 动力学 (移位,速度,平滑),但不是基于屏幕的精度或持续时间.
- 目标变化的时间显著影响了屏幕上的性能,手指动力学和CoP动态.
结论:
- 姿势和达到控制系统有效地保持精确的手动在不太稳定的环境中,即使与非静态的目标.
- 虽然控制系统在不稳定情况下保护终端效应器的性能,但随着运动校正时间的缩短,这种保护会减少.
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