临床上显著测量习惯步行速度的最低要求距离
Myung Woo Park1,2, Sun Gun Chung2,3, Jaewon Beom2,4
1Department of Rehabilitation Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Republic of Korea.
BMC geriatrics
|July 5, 2025
概括
测量老年人的步行速度以获得健康洞察力需要最小的距离. 智能手机的姿势估计可以通过使用质量中心计算,在仅2.1米的时间内可靠地评估步行速度.
科学领域:
- 老年学是一门学科.
- 生物机械工程 生物机械工程
- 数字健康数字健康
背景情况:
- 步行速度是老年人健康和长寿的关键指标.
- 对于可靠的步行速度测量,最佳的步行距离尚未确立.
- 基于智能手机的姿势估计为步态分析提供了一种新的方法.
研究的目的:
- 用智能手机姿势估计来确定临床可靠的步行速度测量的最小距离.
- 为了调查受试者的特征或测量方法是否会影响这一最小距离.
主要方法:
- 健康的老年人 (≥65岁) 接受了视频记录的10米步行测试.
- 姿势估计算法识别了14个身体点来计算步行速度.
- 步行速度是使用质量中心或领先的脚计算的,与手动测量进行验证.
- 最小距离被定义为最短的距离,在临床上重要的最小差异 (0.1 m/sec) 范围内产生步行速度置信区间.
主要成果:
- 姿势估计表明与手动步行速度测量有很高的一致性 (ICC=0.889).
- 最少要求的距离是2.1米 (质量中心,95%CI) 和4.7米 (领先的脚,90%CI).
- 步行速度变异与步行速度和肌肉力量 (膝盖伸展,握力) 有正相关.
结论:
- 使用智能手机通过质量中心进行姿势估计,可以在2.1米内实现临床可靠的步行速度测量.
- 对于步行较慢或肌肉力量较弱的人来说,较短的距离可能足够.
- 这种方法有助于在老年人群中进行可访问和高效的步态评估.
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