Muscle coordination of support, progression and balance during stair ambulation

Journal article


Lin, Yi-Chung, Fok, Laurence, Schache, Anthony and Pandy, Marcus. (2015). Muscle coordination of support, progression and balance during stair ambulation. Journal of Biomechanics. 48(2), pp. 340-347. https://doi.org/10.1016/j.jbiomech.2014.11.019
AuthorsLin, Yi-Chung, Fok, Laurence, Schache, Anthony and Pandy, Marcus
Abstract

Stair ambulation is more physically demanding than level walking because it requires the lower-limb muscles to generate greater net joint moments. Although lower-limb joint kinematics and kinetics during stair ambulation have been extensively studied, relatively little is known about how the lower-limb muscles accelerate the whole-body center of mass (COM) during stair ascent and descent. The aim of the current study was to evaluate differences in muscle contributions to COM accelerations between
level walking and stair ambulation in 15 healthy adults. Three-dimensional quantitative gait analysis and musculoskeletal modeling were used to calculate the contributions of the individual lower-limb muscles to the vertical, fore-aft and mediolateral accelerations of the COM (support, progression, and balance, respectively) during level walking, stair ascent and stair descent. Muscles that contribute most significantly to the acceleration of the COM during level walking (hip, knee, and ankle extensors) also dominate during stair ambulation, but with noticeable differences in coordination. In stair ascent, gluteus maximus accelerates the body forward during the first half of stance and soleus accelerates the body backward during the second half of stance, opposite to the functions displayed by these muscles in level walking. In stair descent, vasti generates backward and medial accelerations of the COM during the second half of stance, whereas it contributes minimally during this period in level walking. Gluteus medius performs similarly in controlling mediolateral balance during level walking and stair ambulation. Differences in lower-limb muscular coordination exist between stair ambulation and level walking, and our results have implications for interventions aimed at preventing stair-related falls.

KeywordsGait ; Falls prevention; Induced accelerations; Muscle function
Year01 Jan 2015
JournalJournal of Biomechanics
Journal citation48 (2), pp. 340-347
PublisherElsevier Ltd. (UK)
ISSN0021-9290
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jbiomech.2014.11.019
Web address (URL)https://www.sciencedirect.com/science/article/pii/S0021929014006071?via%3Dihub
Research or scholarlyResearch
Page range340-347
Publisher's version
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All rights reserved
Output statusPublished
Publication dates
Online21 Jan 2015
Publication process dates
Accepted19 Nov 2014
Deposited21 May 2024
Additional information

© 2014 Elsevier Ltd. All rights reserved.

Place of publicationUnited Kingdom
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