The step length–frequency relationship in physically active community-dwelling older women
The step length–frequency relationship in physically active community-dwelling older women
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DOI：
10.1007/s00421-008-0795-6
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发表时间：
2008-06
影响因子：
3
通讯作者：
A. Zijlstra;E. D. Bruin;N. Bruins;W. Zijlstra
中科院分区：
文献类型：
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作者：
A. Zijlstra;E. D. Bruin;N. Bruins;W. Zijlstra
本研究评估了步长频率的关系，在身体活动的社区居住的老年妇女，以调查这两个时空步态参数之间的关系是否随年龄的增长而变化。四个年龄组（即64-69岁、70-74岁、75-79岁和80-85奥尔兹）的40名老年妇女参加了这项研究。受试者以五种不同的自选速度行走，同时执行额外的认知和/或上肢运动任务。步态参数由下背部的三轴加速度计测量的向前加速度确定。所有受试者表现出很强的线性关系之间的步长和步频步行在不同的速度。没有证据表明步长-频率关系随年龄变化，这表明不同年龄组的体力活动老年妇女在采用“谨慎步态”方面没有差异，即步态模式的特征是步长减少。
This study evaluated the step length–frequency relationship in physically active community-dwelling older women in order to investigate whether the relationship between these two spatio-temporal gait parameters changes with increasing age. Forty older women in four age groups, i.e. 64–69, 70–74, 75–79 and 80–85 year olds, participated in the study. Subjects walked at five different self-selected speeds and while simultaneously performing an additional cognitive and/or upper-extremity motor task. Gait parameters were determined from forward accelerations measured by a tri-axial accelerometer on the lower back. All subjects demonstrated a strong linear relationship between step length and step frequency for walking at different speeds. No evidence for a change in the step length–frequency relationship with age was found, suggesting that there are no differences between physically active older women of different age groups regarding the adoption of a “cautious gait”, i.e. a gait pattern characterized by a reduced step length.