Distance to achieve steady state walking speed in frail elderly persons

被引:166
作者
Lindemann, U. [1 ]
Najafi, B. [2 ]
Zijlstra, W. [3 ]
Hauer, K. [1 ,4 ]
Muche, R. [5 ]
Becker, C. [1 ]
Aminian, K. [2 ]
机构
[1] Robert Bosch Krankenhaus, Dept Geriatr Rehabil, D-70376 Stuttgart, Germany
[2] Ecole Polytech Fed Lausanne, Inst Biomech Translat, Lab Movements Anal & Measurement, CH-1015 Lausanne, Switzerland
[3] Univ Groningen, Univ Med Ctr Groningen, Ctr Human Movement Sci, NL-9700 AD Groningen, Netherlands
[4] Univ Heidelberg, Bethanien Hosp Heidelberg, Acad Ctr, D-69126 Heidelberg, Germany
[5] Univ Ulm, Dept Biometry & Med Documentat, D-89075 Ulm, Germany
关键词
gait initiation; elderly; steady state walking; variability; body fixed sensors;
D O I
10.1016/j.gaitpost.2007.02.005
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
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.
引用
收藏
页码:91 / 96
页数:6
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