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在动态运动任务中实施基于加速度计的骨盆段,用于背部下部运动分析.

Jackie D Zehr1, Jessa M Davidson2, Jack P Callaghan2

  • 1Human Performance Lab, University of Calgary, Calgary, Alberta, Canada.

Journal of biomechanics
|March 27, 2024
PubMed
概括
此摘要是机器生成的。

基于加速度计的骨盆系统准确计算下背部 (L5S1) 动力学,包括反应时刻和力. 这种方法,与新的大腿角校正,是可行的评估伤害风险.

关键词:
压缩 压缩 压缩 压缩运动学 运动学低背部的时刻 低背部的时刻反应部队的反应力量.剪刀 剪刀 剪刀 剪刀

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科学领域:

  • 生物力学 生物力学
  • 运动学 运动学
  • 人体工程学就是人体工程学.

背景情况:

  • 基于加速器的骨盆跟踪用于动力学,但其下背运动精度尚不清楚.
  • 评估腰部关节反应时刻和接触力对于伤害风险评估至关重要.

研究的目的:

  • 为了比较L5S1关节反应时刻和接触力,从基于加速度计的骨盆与光学跟踪的骨盆中获得.
  • 引入和验证一种方法来纠正全球骨盆位置,使用大腿角.

主要方法:

  • 一名参与者执行了四个动态任务 (向前曲,腰,坐到站到坐,向前冲刺).
  • 使用了自下而上的反向动态方法.
  • 根平均平方误差 (RMSE) 和确定系数 (R2 ) 量化了光学方法和加速度计方法之间的差异.

主要成果:

  • L5S1反应屈曲-延伸时刻显示RMSE从1.32-2.20Nm (R2 ≥0.98) 之间.
  • 净切削和压缩力具有2.13-10.45N和0.63-4.96N的RMSE.
  • L5S1联合接触力的RMSE为13.45-19.51N (剪切) 和31.18-55.97N (压缩) (R2 ≥0.85).

结论:

  • 基于加速度计的骨盆,具有大腿角度校正,可用于计算背部下部运动.
  • 联合接触力的计算误差为NIOSH限值的<5%,不太可能影响伤害风险解释.