Citation

Ketema Y, Gebre-Egziabher D. J. Biomech. Eng. 2015; ePub(ePub): ePub.

Copyright

(Copyright © 2015, American Society of Mechanical Engineers)

DOI

10.1115/1.4032047

PMID

26593150

Abstract

A method for estimating gait parameters (shank, thigh and stance leg angles) from a single, in-situ, scalar acceleration measurement is presented. A methods for minimizing the impact of errors due to unpredictable variations in muscle actuation and acceleration measurement biases is developed. This is done by determining the most probable gait progression by minimization of a cost function that re ects the size of errors in the gait parameters. In addition, a model for gait patterns that takes into account their variations due to walking speed is introduced and used. The approach is tested on data collected from subjects in a gait study. The approach can estimate limb angles with errors less than 6° (one standard deviation) and, thus, is suitable for many envisioned gait monitoring applications in non-laboratory settings.

Language: en