3D腿加速和考虑3D角运动使用IMU在峰值腿加速和冲动在运行中的IMU
Robbert P VAN Middelaar1, Junhao Zhang1, Peter H Veltink1
1University of Twente, Enschede, THE NETHERLANDS.
Medicine and science in sports and exercise
|July 26, 2023
概括
在峰值 acceleration (PTA) 估计中包括旋转加速和重力对于准确的负荷测量至关重要. 在使用IMU来评估运行负载时,骨脉冲为PTA提供了更一致的替代方案.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 整形外科 整形外科 整形外科
背景情况:
- 尖加速 (PTA) 是一种常见的间接测量,用于测量像跑步这样的活动中的尖负荷.
- 骨在脚周围的旋转运动表明,角速度和加速影响PTA.
- 了解这些影响对于准确的负载评估和伤害预防至关重要.
研究的目的:
- 量化在近距离和远距离传感器位置的3D腿加速元件,跨越各种运行速度.
- 为了确定中心和触角加速在运行过程中对PTA的影响.
- 探索骨冲动作为骨负载的潜在代用措施.
主要方法:
- 15名参与者以2.8米/秒,3.3米/秒和3.9米/秒的速度进行了90秒的跑步机跑步.
- 惯性测量单元 (IMU) 放置在远距离和近距离骨上.
- 分析了包括旋转元件和重力在内的三维骨加速.
主要成果:
- 在没有旋转数据的情况下,轴向PTA在IMU位置之间没有显著差异;触点PTA确实如此.
- 包括旋转加速和重力在内,在两个位置的脚上产生了类似的PTA估计.
- 脉冲在近端和远端IMU位置之间显示出比轴向PTA更一致的结果.
结论:
- 旋转加速和重力显著影响PTA,需要将它们纳入估计.
- 来自IMU的峰值加速度值可能由于近距离不一致而不可靠.
- 腿脉冲似乎是评估腿负荷的更可靠的替代措施.
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