Article

Quantitative assessment of gait parameters provides valuable diagnostic and
prognostic information. However, most gait analysis systems are bulky, expensive,
and designed to be used indoors or in laboratory settings. Recently, wearable
systems have attracted considerable attention due to their lower cost and
portability. In this paper, we present a simple wearable smartphone-enabled
camera-based system (SmartGait) for measurement of spatiotemporal gait
parameters. We assess the concurrent validity of SmartGait as compared to a
commercially available pressure-sensing walkway (GaitRite). Fifteen healthy young
adults (25.8+/- 2.6 years) were instructed to walk at slow, preferred, and fast
speed. The measures of step length (SL), step width (SW), step time (ST), gait
speed, double support time (DS) and their variability were assessed for agreement
between the two systems; absolute error and intra-class correlation coefficients
(ICC) were determined. Measured gait parameters had modest to excellent
agreements (ICCs between 0.731 and 0.982). Overall, SmartGait provides many
advantages and is a strong alternative wearable system for laboratory and
community-based gait assessment.
CI - Copyright (c) 2015 Elsevier B.V. All rights reserved.

Langue : ANGLAIS