Estimation of gait cycle characteristics by trunk accelerometry
Estimation of gait cycle characteristics by trunk accelerometry
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DOI：
10.1016/s0021-9290(03)00233-1
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发表时间：
2004-01-01
影响因子：
2.4
通讯作者：
Helbostad, JL
中科院分区：
文献类型：
--
作者：
Moe-Nilssen, R;Helbostad, JL
这项研究报告了一种便携式系统测量步态周期参数的新用途。测量是由一个三轴加速度计在下躯干上进行的，在一定的自我管理速度范围内进行定时步行。每个试验的信号被转换到水平垂直坐标系，并通过无偏自相关程序进行分析，以获得步调、步长以及步态规则和对称性的测量。通过曲线插值法，可以在归一化速度下比较与速度相关的步态参数。已经证明，以前需要固定的实验室设备和步态程序的步态周期参数分析，现在可以根据计时器和便携式传感器在自由步行速度下获得的数据进行。(C)2003爱思唯尔有限公司。保留所有权利。
This study reports on the novel use of a portable system to measure gait cycle parameters. Measurements were made by a triaxial accelerometer over the lower trunk during timed walking over a range of self-administered speeds. Signals from each trial were transformed to a horizontal vertical coordinate system and analyzed by an unbiased autocorrelation procedure to obtain cadence, step length, and measures of gait regularity and symmetry. By curvilinear interpolation, speed-dependent gait parameters could be compared at a normalized speed. It was demonstrated that analysis of gait cycle parameters which previously required fixed laboratory equipment and paced walking procedures, now can be made from data obtained by a timing device and a portable sensor at free walking speeds. (C) 2003 Elsevier Ltd. All rights reserved.