轻轻的手指触摸在静静地站立时对信号复杂性的影响
Anna Brachman1, Anna Sawicka1, Bartłomiej Bednarz1
1Institute of Sport Sciences, Department of Biomechanics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.
Acta of bioengineering and biomechanics
|February 5, 2024
概括
添加轻微的指尖触摸可以显著减少前后方向的姿势摆动. 这种触觉输入通过增加压力中心 (COP) 信号不规则性来增强姿势稳定.
科学领域:
- 生物力学 生物力学
- 人类运动控制人体运动控制
- 感官整合 感官整合
背景情况:
- 姿势控制依赖于整合感官信息.
- 触觉反,特别是轻轻的触摸,可能在提炼平衡方面发挥着至关重要的作用.
- 了解触觉输入对压力中心 (COP) 动态的影响对于人类运动分析至关重要.
研究的目的:
- 为了研究轻轻的指尖触摸如何影响姿势摇摆以及静静站立时压力中心 (COP) 波动的规律性.
- 为了确定触觉信息是否增强姿势稳定性并改变COP信号复杂性.
主要方法:
- 32名健康参与者进行了静静的站立任务,并没有轻微的指尖触摸.
- 从力量平台数据中使用标准测量 (距离,RMSE,速度) 来评估姿势摇摆.
- 使用样本 (SampEn) 量化压力中心 (COP) 时间序列规律性.
主要成果:
- 轻轻的触摸显著减少了前后后姿势摇摆,与前面平面摇摆相匹配,没有触摸.
- COP波动在前后后方向变得更加不规则,轻微触摸,由更高的样本变得更加不规则.
- 姿势控制在中侧方向看起来更自动,而不是在斜腰平面.
结论:
- 轻微的指尖触摸提供了额外的感官信息,增强了姿势稳定,主要是在手足平面.
- 随着轻微触摸的COP不规则性增加,表明注意力需求和控制策略的转变.
- 像样本的非线性测量提供了超越传统平衡指标的人体姿势控制的宝贵见解.
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