步行对称性是取决于速度和指数的
Elena Bergamini1,2, Andrea Cereatti3, Gaspare Pavei4
1Department of Management, Information and Production Engineering, University of Bergamo, Via Marconi 4, 24044, Dalmine, Bergamo, Italy. elena.bergamini@unibg.it.
Scientific reports
|August 22, 2024
概括
步行对称指数如SA,SIBCoM和iHR显著不同,并受到步行速度的影响. 健康步行本质上是不对称的,影响临床评估.
科学领域:
- 生物力学和运动控制
- 步态分析 步态分析
- 康复科学 康复科学 康复科学
背景情况:
- 步态对称性是步态质量的关键指标,有各种指数被提议用于量化.
- 现有的指数包括对称角度 (SA),体质中心对称指数 (SIBCoM),以及从下加速计中改进的律比率 (iHR).
- 这些指数与步行速度的影响之间的相互关系仍未得到充分研究.
研究的目的:
- 为了比较步态对称指数:SA,SIBCoM,以及iHR.
- 为了研究步行速度对这些选择的步态对称性指数的影响.
- 评估这些指数检测步态不对称性的能力.
主要方法:
- 十名健康的成年人以七个速度 (0.28-1.95米/秒) 在跑步机上行走,并以0.83米/秒的速度模拟不对称 (ASYM).
- 基于标记器的运动捕捉记录了质量轨迹的3D身体中心.
- 使用三轴加速度计收集下的3D加速度;SI,iHR和SA计算.
主要成果:
- 没有一个指数在所有轴和条件上都表现出完美的对称性.
- 在SIBCoM和iHR之间发现了所有解剖学方向的显著差异 (p < 0.0001).
- 步行速度显著影响SIBCoM和iHR (前后,后),但不是SA (p = 0.28). 所有指数都将ASYM与正常步行区分开来 (p < 0.05).
结论:
- 步态对称度测量根据数据源,数学方法和步行速度而有所不同.
- 健康的个体表现出固有的步态不对称,这是制定康复目标的关键因素.
- 临床步行质量评估必须考虑这些指数特定和速度依赖的变化.
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