Computational evaluation of load carriage effects on gait balance stability

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Evaluating the effects of load carriage on gait balance stability is important in various applications. However, their quantification has not been rigorously addressed in the current literature, partially due to the lack of relevant computational indices. The novel Dynamic Gait Measure (DGM) characterizes gait balance stability by quantifying the relative effects of inertia in terms of zero-moment point, ground projection of center of mass, and time-varying foot support region. In this study, the DGM is formulated in terms of the gait parameters that explicitly reflect the gait strategy of a given walking pattern and is used for computational evaluation of the distinct balance stability of loaded walking. The observed gait adaptations caused by load carriage (decreased single support duration, inertia effects, and step length) result in decreased DGM values (p<0.0001), which indicate that loaded walking motions are more statically stable compared with the unloaded normal walking. Comparison of the DGM with other common gait stability indices (the maximum Floquet multiplier and the margin of stability) validates the unique characterization capability of the DGM, which is consistently informative of the presence of the added load
Publisher
TAYLOR &amp; FRANCIS LTD
Issue Date
2016-08
Language
English
Article Type
Article
Keywords

DYNAMIC STABILITY; POSTURAL STABILITY; HUMAN WALKING; TRUNK; SIMULATION; ADULTS; COORDINATION; DEFINITIONS; FORMULATION; PARAMETERS

Citation

COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING, v.19, no.11, pp.1127 - 1136

ISSN
1025-5842
DOI
10.1080/10255842.2015.1110146
URI
http://hdl.handle.net/10203/208990
Appears in Collection
ME-Journal Papers(저널논문)
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