Campus Units

Kinesiology

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

1-19-2020

Journal or Book Title

Applied Ergonomics

Volume

85

Issue

103057

DOI

10.1016/j.apergo.2020.103057

Abstract

The purpose of this study was to assess postural stability in the medial-lateral (ML) direction when carrying unilateral and bilateral loads during stair negotiation. Twenty-four healthy young adults were instructed to ascend and descend a three step staircase under three load conditions: no load, 20% body mass (BM) bilateral load, and 20% BM unilateral load. A modified time-to-contact (TTC) method was proposed to evaluate postural stability during stair negotiation. Carrying unilateral loads required more rapid postural adjustments as evidenced by lower minimum ML TTC and ML TTC percentage as compared bilateral loads and no load during stair descent. In addition, lower ML TTC and TTC percentage were found for loaded limb stance for stair descent. Taken together, unilateral loads and the loaded leg during stair descent are of concern when considering postural stability during load carriage. These results illustrate differing postural control challenges for stair ascent and descent during load carriage.

Comments

This accepted article is published as Wang, J., Gillette, J.C., Mediolateral postural stability when carrying asymmetric loads during stair negotiation., Applied Ergonomics, 85(May 2020); 103057. Doi: 10.1016/j.apergo.2020.103057. Posted with permission.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Saturday, May 01, 2021

Published Version

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