Distance to achieve steady state walking speed in frail elderly persons
Distance to achieve steady state walking speed in frail elderly persons
复制标题
DOI：
10.1016/j.gaitpost.2007.02.005
复制
发表时间：
2008-01-01
期刊：
影响因子：
2.4
通讯作者：
Aminian, K.
中科院分区：
文献类型：
--
作者：
Lindemann, U.;Najafi, B.;Aminian, K.
本研究旨在确定体弱老年人在实现稳态行走之前步态起始阶段的长度。基于身体固定传感器，对 116 名社区老年人（平均年龄 83.1 岁，84% 为女性）的步行习惯进行了分析。稳态行走的开始是通过考虑连续跨步的速度的算法来确定的。平均而言，参与者在 1.43 m 的加速阶段后达到 0.66 m/s 的步行速度（89% 在 2.47 m 后）。当从达到稳定状态后的 4、6、8、10 或 20 个连续步幅周期计算时空变量时，观察到平均步态速度和步幅长度的类似值。这些因素的变异性根据步态周期的数量而不同。因此，对虚弱老年人的稳态步态评估应排除前 2.5 m 的步行。如果要评估步态变异性，建议使用 20 个以上的步幅周期。 (c) 2007 Elsevier B.V. 保留所有权利。
This study aims to determine the length of the gait initiation phase before achieving steady state walking in frail older people. Based on body fixed sensors, habitual walking was analysed in 116 community-dwelling older persons (mean age 83.1 years, 84% women). The start of steady state walking was identified using an algorithm taking into account speeds from consecutive strides. On average, participants reached a walking speed of 0.66 m/s after an acceleration phase of 1.43 m (89% after 2.47 m). When spatio-temporal variables were calculated from 4, 6, 8, 10, or 20 consecutive stride cycles after achieving steady state, similar values were observed for mean gait speed and stride length. The variability of these factors differed depending on the number of gait cycles. Assessments of steady state gait in frail elderly people should therefore exclude the first 2.5 m of walking. If gait variability is to be assessed, it is recommended that more than 20 stride cycles be used. (c) 2007 Elsevier B.V. All rights reserved.