Effects of surface irregularity and lighting on step variability during gait: A study in healthy young and older women
Effects of surface irregularity and lighting on step variability during gait: A study in healthy young and older women
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DOI：
10.1016/j.gaitpost.2004.06.004
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发表时间：
2005-08-01
期刊：
影响因子：
2.4
通讯作者：
Ashton-Miller, JA
中科院分区：
文献类型：
--
作者：
Thies, SB;Richardson, JK;Ashton-Miller, JA
相对而言，很少有研究探讨不平坦的表面如何影响人类步态。为了研究这一点，沿着年龄增长和弱光条件的影响，我们测量了12名健康年轻女性（YW）和12名健康老年女性（OW）以舒适的速度沿着10米人行道行走时的步宽和步时变异性以及舒适的步态速度。对2 × 2析因设计的每个单元完成10次试验：（1）具有常规照明的平坦表面;（2）具有低照明的平坦表面;（3）具有常规照明的不规则表面;和（4）具有低照明的不规则表面。通过重复测量方差分析测试表面类型、入射光和年龄对步态参数的影响。表面类型显著影响步宽变异性（P < 0.001）和步时间变异性（P < 0.001）。光照水平对任何步态参数均无显著影响。一个显着的年龄组差异被发现：步宽变异性显着大于OW比YW（P = 0.010）。我们的结论是不规则的表面有一个更大的影响健康OW的步态变异性比健康YW。(c)2004 Elsevier B. V.保留所有权利。
Relatively few studies have examined how uneven surfaces affect human gait. To study this, along with the effects of advancing age and low light conditions, we measured step width and step time variability, as well as comfortable gait speed, in 12 healthy young women (YW) and 12 healthy older women (OW) as they walked at a comfortable speed along a 10-m walkway. Ten trials were completed for each cell of a 2 x 2 factorial design: (1) flat surface with regular lighting; (2) flat surface with low lighting; (3) irregular surface with regular lighting; and (4) irregular surface with low lighting. Effects of surface type, incident lighting, and age on gait parameters were tested via repeated measures ANOVA. Surface type significantly affected step width variability (P < 0.001) and step time variability (P < 0.001). Light level showed no significant effect on any of the gait parameters. One significant age group difference was found: step width variability was significantly greater in OW than YW (P = 0.010). We conclude that the irregular surface had a greater effect on the gait variability of healthy OW than on that of healthy YW. (c) 2004 Elsevier B.V. All rights reserved.