Grabiner P C, Biswas S T, Grabiner M D
Clinical Biomechanics and Rehabilitation Laboratory, Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA.
Arch Phys Med Rehabil. 2001 Jan;82(1):31-5. doi: 10.1053/apmr.2001.18219.
To extend recent findings describing the effect of age on spatial and temporal gait variables.
Experimental.
A gait analysis laboratory.
Two experiments with healthy nonfallers were conducted. Experiment 1 included 33 subjects (n = 15, 72.13 +/- 3.96yr; n = 18, 25.06 +/- 4.02yr); and experiment 2 included 24 subjects (n = 14, 75.57 +/- 6.15yr; n = 10; 28.10 +/- 3.48yr).
The effect of age, walking velocity, shoe condition, and performance of an attention-splitting task on gait variables was investigated.
Temporal and spatial gait variables were quantified using an instrumented surface across which subjects walked. The independent variables were walking velocity variability, stride length variability, stride width variability, and stride time variability.
Stride width variability of older adults was significantly larger than that of younger adults in both experiments. The remaining gait variables demonstrated nonsystematic or no age-related differences.
With the exception of stride width variability, the variability of the remaining gait variables of interest were insensitive to the speed at which subjects walked, whether the subjects were wearing shoes or not, and performing an attention-splitting task while walking. These findings contribute to an emerging interpretive framework established by similar work published by others regarding gait variability.
扩展近期关于年龄对空间和时间步态变量影响的研究结果。
实验性研究。
步态分析实验室。
对健康的非跌倒者进行了两项实验。实验1包括33名受试者（n = 15，72.13±3.96岁；n = 18，25.06±4.02岁）；实验2包括24名受试者（n = 14，75.57±6.15岁；n = 10；28.10±3.48岁）。
研究年龄、步行速度、鞋子状况以及执行注意力分散任务对步态变量的影响。
使用受试者行走的仪器化表面对时间和空间步态变量进行量化。自变量为步行速度变异性、步长变异性、步宽变异性和步幅时间变异性。
在两项实验中，老年人的步宽变异性均显著大于年轻人。其余步态变量表现出非系统性或无年龄相关差异。
除步宽变异性外，其余感兴趣的步态变量的变异性对受试者行走速度、是否穿鞋以及行走时执行注意力分散任务均不敏感。这些发现有助于完善由其他类似研究建立的关于步态变异性的新兴解释框架。
