节奏 (步骤/分钟) 作为步行到跑步过渡的指标
Colleen J Chase1, Elroy J Aguiar2, Christopher C Moore3
1Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA.
Human movement science
|June 19, 2023
概括
节奏,或每分钟的步数,是比速度或弗罗德数更准确地预测步行到跑步的转变 (WRT). 这一发现有助于使用可穿戴技术对步态进行分类.
科学领域:
- 生物力学 生物力学
- 人类的机动运动.
- 步态分析 步态分析
背景情况:
- 步行到跑步的转变 (WRT) 是人类运动中的自然变化.
- 传统上,WRT与大约2.1m/s的速度或0.5.5的Froude数有关.
- 新兴研究表明,节奏 (步数/分钟) 也可以作为WRT指标,对可穿戴技术至关重要.
研究的目的:
- 评估已建立的WRT指标 (速度,弗罗德数,节奏) 的预测性能.
- 评估从新跑步机数据集中识别的WRT预测因素.
- 为了比较不同WRT分类方法的准确性.
主要方法:
- 28名成年人完成了跑步机行走试验,速度逐渐增加.
- 接收机操作特征 (ROC) 曲线分析确定了速度,弗劳德数和节奏的最佳WRT值.
- 使用分类准确度指标来评估WRT预测器的性能.
主要成果:
- 140步/分钟的节奏表现出高精度 (91.1%) 基于先前的文献.
- 新的数据确定了最佳的节奏 (134,139,141步/分钟) 准确率为92.9%.
- 节奏预测器在WRT分类的准确性方面表现优于速度和弗罗德数.
结论:
- 一个狭窄的节奏值范围 (135-140步/分钟) 可以准确地预测成年人的WRT.
- 与速度或弗罗德数相比,节奏是一个优越的WRT预测器.
- 这些发现支持通过可穿戴设备和直接观察使用节奏来进行步态分类.
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