一个简单的传感器重定位程序在运行过程中对腿峰值加速的影响以及与地面反应力相关的关系
Molly M Bradach1, Logan W Gaudette1, Adam S Tenforde1
1Spaulding National Running Center, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Cambridge, MA 02138, USA.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
将脚加速 (TA) 传感器重定向到固定在身体上的框架,在运行过程中产生了峰值TA值的系统差异,并显示了与地面反应力 (GRF) 的相关性略有改善. 进一步的调查是有必要的.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人类运动分析 人类运动分析
背景情况:
- 在跑步中,峰值 accelerations (TAs) 和地面反应力 (GRFs) 之间存在不一致的相关性.
- 缺乏用于TA测量的标准化传感器定向是导致不一致结果的潜在原因.
研究的目的:
- 为了评估传感器重定向方法对峰值TA的影响.
- 评估重定向对运行过程中TA和GRF之间的相关性的影响.
主要方法:
- 收集了28名跑步者的TA和GRF数据,这些跑步者在仪器化跑步机上以自己选择的速度跑.
- 通过校准试验 (静静地站立和) 将TA数据重新定向到固定在身体上的框架上.
- 在原始和重定向数据之间比较了峰值TA值和与GRF指标的相关性.
主要成果:
- 在中间,侧面,垂直和前面的方向上观察到原始和重定向的峰值TA之间存在显著的差异 (p < 0.01).
- 与原始数据相比,重新定向的TA显示出更高的中间/侧面峰值和更低的垂直/前面峰值.
- 对于重定向的TAs,与GRF指标的相关性通常更高,侧面峰值显著增加 (Δr2 = 0.18).
结论:
- 将传感器重定向到固定在车身上的框架,导致峰值TA测量的系统差异.
- 经过测试的重定位方法并没有对TA-GRF相关性产生重大改善,但显示出持续的小增长.
- 这种重定位技术需要进一步的研究和开发,以在运行分析中找到潜在的应用.
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