Gait event detection using linear accelerometers or angular velocity transducers in able-bodied and spinal-cord injured individuals

被引：285

作者：

Jasiewicz, Jan M. ^{[1
]}

Allum, John H. J.

Middleton, James W.

Barriskill, Andrew

Condie, Peter

Purcell, Brendan

Li, Raymond Che Tin

机构：

[1] Queensland Univ Technol, Ctr Hlth Res, Sch Human Movement Studies, Kelvin Grove, Qld 4059, Australia

[2] Univ Basel Hosp, Dept ORL, CH-4031 Basel, Switzerland

[3] Univ Sydney, Fac Med, Rehabil Studies Unit, Sydney, NSW 2006, Australia

[4] Restorat Therapies Inc, Baltimore, MD 21224 USA

来源：

GAIT & POSTURE | 2006年 / 24卷 / 04期

关键词：

gait analysis; inertial sensors; foot contact detection;

D O I：

10.1016/j.gaitpost.2005.12.017

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We report on three different methods of gait event detection (toe-off and heel strike) using miniature linear accelerometers and angular velocity transducers in comparison to using standard pressure-sensitive foot switches. Detection was performed with normal and spinal-cord injured subjects. The detection of end contact (EC), normally toe-off, and initial contact (IC) normally, heel strike was based on either foot linear accelerations or foot sagittal angular velocity or shank sagittal angular velocity. The results showed that all three methods were as accurate as foot switches in estimating times of IC and EC for normal gait patterns. In spinal-cord injured subjects, shank angular velocity was significantly less accurate (p < 0.02). We conclude that detection based on foot linear accelerations or foot angular velocity can correctly identify the timing of IC and EC events in both normal and spinal-cord injured subjects. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：502 / 509

页数：8