波动板的不稳定性增强了补偿性COP对COM跨时间尺度移动的反应
Mahsa Barfi1, Theodoros Deligiannis1, Brian Schlattmann1
1Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE 68182, USA.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
摇摆板训练通过增强身体如何调整其压力中心 (CoP) 到质量中心 (CoM) 的姿势控制来改善姿势控制. 这种训练有助于协调身体运动以获得更好的稳定性,特别是在临床人群中.
科学领域:
- 生物力学 生物力学
- 人类运动控制人体运动控制
- 系统神经科学 系统神经科学
背景情况:
- 姿势控制依赖于压力中心 (CoP) 和质量中心 (CoM) 之间的协调相互作用.
- 了解机械和视觉需求如何影响这种相互作用对于开发有效的干预措施至关重要.
研究的目的:
- 研究机械不稳定性 (摇摆板) 和视觉需求 (Trail Making Task) 对CoP和CoM之间的关系的影响.
- 通过使用多尺度回归分析 (MRA) 分析跨多个时间尺度的影响.
主要方法:
- 为了中侧 (ML) 不稳定,使用了一个摇摆板,以及用于前后 (AP) 视觉需求的Trail Making Task (TMT).
- 采用多尺度回归分析 (MRA),源自Detrended波动分析 (DFA),以检查CoP-CoM和CoM-CoP相互作用.
- 从力板数据中测量了CoP,从3D运动捕捉中测量了CoM.
主要成果:
- 摆动板减弱了CoM-to-CoP效应 (100-400ms),在AP轴上加剧,在ML轴上减少.
- 在不同的任务要求下,CoM对CoP运动没有表现出任何敏感性.
- 对 CoM 的 CoP 反应的改变主要是由机械约束驱动的,而不是视觉需求.
结论:
- 身体自由度 (DoFs) 显示了保持直立姿势的特征时间表.
- 具有方向性挑战的生物力学约束对CoP-CoM动态有重大影响.
- 摆动板训练显示了改善姿势缺陷患者的COM-CoP动态的潜力.
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