Division of Cognitive & Motor Aging, Department of Neurology, Albert Einstein College of Medicine, Yeshiva University, 1165 Morris Park Avenue, Bronx, NY 10461, USA.
Gait Posture. 2011 Jan;33(1):98-101. doi: 10.1016/j.gaitpost.2010.10.004. Epub 2010 Nov 2.
Presence of performance inconsistency during repeated assessments of gait may reflect underlying subclinical disease, and help shed light on the earliest stages of disablement. We studied inter-session fluctuations on three selected gait measures (velocity, stride length, and stride length variability) during normal pace walking as well as during a cognitively demanding 'walking while talking' condition using a repeated measurement burst design (six sessions within a 2-week period) in 71 nondisabled and nondemented community residing older adults, 40 with predisability (does activities of daily living unassisted but with difficulty). Subjects with predisability had slower gait velocity and shorter stride length on both the normal and walking while talking conditions at baseline compared to nondisabled subjects. However, there was no significant pattern of fluctuations across the six sessions on the three selected gait variables comparing the two groups during normal walking as well as on the walking while talking conditions. Our findings support consistency of gait measurements during the earliest stages of disability.
在多次步态评估中存在表现不一致的情况可能反映了潜在的亚临床疾病，并有助于揭示失能的最早阶段。我们使用重复测量突发设计（在 2 周内进行 6 次测试），对 71 名无残疾和非痴呆的社区居住的老年人进行了研究，其中 40 名有残疾倾向（日常生活活动无需帮助但有困难）。与无残疾者相比，有残疾倾向者在正常和边行走边说话两种情况下的步态速度较慢，步幅较短。然而，在正常行走以及边行走边说话的情况下，两组在六个测试会话中，三个选定的步态变量的波动均没有明显的模式。我们的研究结果支持在残疾的最早阶段步态测量的一致性。
