在室内赛道上运行时,赛程间的可靠性和尖加速的最小可检测差异在室内赛道上运行
Zoe Y S Chan1, Hannah Dimmick2, Reed Ferber1
1Faculty of Kinesiology, University of Calgary, Calgary, Canada.
Sports biomechanics
|August 18, 2025
概括
可靠的运行影响评估需要平均许多步骤. 至少40步确保了轴峰加速 (PTA) 的良好可靠性,而100步是需要的,以获得优异的结果PTA可靠性.
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:
- 尖加速 (PTA) 是量化运行冲击负荷的一个关键指标.
- 之前的研究还没有明确定义在地面上运行的可靠PTA测量所需的步数.
- 了解PTA可靠性对于评估步态再培训等干预措施至关重要.
研究的目的:
- 在地面运行时评估轴向和由此产生的PTA在一周和三周的可靠性.
- 为了确定在PTA测量中实现良好的和卓越的可靠性所需的最小步数.
- 在休跑者中确定PTA的最小可检测差异 (MDD).
主要方法:
- 11名休跑步运动员在200米室内跑道上进行了三次地面跑步.
- 一个安装在骨上的加速度计记录了PTA数据.
- 类内相关系数 (ICC) 用于评估各种步幅间隔的测试-重新测试可靠性.
主要成果:
- 对轴性PTA (ICC 0.670.84) 发现了中等到良好的可靠性,对产生的PTA (ICC 0.780.94) 在一周和三周内发现了中等到优秀的可靠性.
- 对于轴向PTA (MDD = 2.93 g) 的良好可靠性,建议至少进行40个步骤.
- 对于得到的PTA (MDD = 2.72 g) 的卓越可靠性,建议至少进行100个步骤.
结论:
- acceleration 的峰值显示出可靠的会话间测量特性,用于评估运行冲击.
- 建议为轴向PTA平均40步,为得到的PTA平均100步,以便进行可靠的分析.
- 研究人员在解释干预措施的PTA数据时,应考虑步伐变化和轨道曲率.
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