Dual-Task Elderly Gait of Prospective Fallers and Non-Fallers: A Wearable-Sensor Based Analysis.
Dual-Task Elderly Gait of Prospective Fallers and Non-Fallers: A Wearable-Sensor Based Analysis.
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DOI：
10.3390/s18041275
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发表时间：
2018-04-21
期刊：
影响因子：
--
通讯作者：
McIlroy WE
中科院分区：
文献类型：
--
作者：
Howcroft J;Lemaire ED;Kofman J;McIlroy WE
可穿戴传感器可以通过评估单任务（ST）和双任务（DT）行走，促进点护理，临床可行的动态稳定性评估和相关跌倒风险。这项研究调查了ST和DT行走之间以及老年预期跌倒者和非跌倒者之间的步态变化。结果与一项基于回顾性跌倒发生率的研究进行了比较。75名受试者（75.2±6.6岁；47名未跌倒者，28名跌倒者；6个月预期发生跌倒）在ST和DT条件下行走7.62米，同时在头部、骨盆和双小腿处佩戴压力感应鞋垫和加速度计。dt引起的步态变化包括时间测量、压力中心（CoP）路径姿态偏差和变异系数、加速度描述性统计、快速傅里叶变换（FFT）第一四分位数、偶奇谐波比和最大李雅普诺夫指数的变化。与非跌倒者相比，预期跌倒者的DT前后侧CoP路径立场变异系数、DT头部前后侧FFT第一四分位数、ST左小腿内侧外侧FFT第一四分位数和ST右小腿最大加速度显著降低。无论跌倒状态或何时发生跌倒（回顾性或前瞻性），dt引起的步态变化都是一致的。跌倒者和非跌倒者之间的步态差异取决于回顾性或前瞻性的跌倒者识别。
Wearable sensors could facilitate point of care, clinically feasible assessments of dynamic stability and associated fall risk through an assessment of single-task (ST) and dual-task (DT) walking. This study investigated gait changes between ST and DT walking and between older adult prospective fallers and non-fallers. The results were compared to a study based on retrospective fall occurrence. Seventy-five individuals (75.2 ± 6.6 years; 47 non-fallers, 28 fallers; 6 month prospective fall occurrence) walked 7.62 m under ST and DT conditions while wearing pressure-sensing insoles and accelerometers at the head, pelvis, and on both shanks. DT-induced gait changes included changes in temporal measures, centre of pressure (CoP) path stance deviations and coefficient of variation, acceleration descriptive statistics, Fast Fourier Transform (FFT) first quartile, ratio of even to odd harmonics, and maximum Lyapunov exponent. Compared to non-fallers, prospective fallers had significantly lower DT anterior–posterior CoP path stance coefficient of variation, DT head anterior–posterior FFT first quartile, ST left shank medial–lateral FFT first quartile, and ST right shank superior maximum acceleration. DT-induced gait changes were consistent regardless of faller status or when the fall occurred (retrospective or prospective). Gait differences between fallers and non-fallers were dependent on retrospective or prospective faller identification.
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影响因子：
5.1
作者：
Lamoth CJ;van Deudekom FJ;van Campen JP;Appels BA;de Vries OJ;Pijnappels M
通讯作者：
Pijnappels M
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
影响因子：
6.7
作者：
Bohannon, RW
通讯作者：
Bohannon, RW
影响因子：
2.4
作者：
Rende, B;Ramsberger, G;Miyake, A
通讯作者：
Miyake, A
DOI：
10.1093/gerona/63.12.1335
发表时间：
2008-12
期刊：
The journals of gerontology. Series A, Biological sciences and medical sciences
影响因子：
--
作者：
Hausdorff JM;Schweiger A;Herman T;Yogev-Seligmann G;Giladi N
通讯作者：
Giladi N