The role of excess mass in the adaptation of children's gait

Shultz, Sarah P., D'Hondt, Eva, Lenoir, Matthieu, Fink, Philip W. and Hills, Andrew P. (2014) The role of excess mass in the adaptation of children's gait. Human Movement Science, 36 12-19. doi:10.1016/j.humov.2014.05.002


Author Shultz, Sarah P.
D'Hondt, Eva
Lenoir, Matthieu
Fink, Philip W.
Hills, Andrew P.
Title The role of excess mass in the adaptation of children's gait
Journal name Human Movement Science   Check publisher's open access policy
ISSN 1872-7646
0167-9457
Publication date 2014-08
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.humov.2014.05.002
Open Access Status
Volume 36
Start page 12
End page 19
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Abstract The aim of this study was to determine differences in lower extremity joint powers at weight acceptance and propulsion in obese and non-obese children during two loading conditions. Gait analyses were conducted on 20 non-obese and 20 obese children (8-12. years). The first testing session was completed in a normal (unloaded) condition; an additional 10% body mass (acute loading) was added during the second session. Peak lower extremity joint power (W) phases were identified at weight acceptance and propulsion. Obese children demonstrated greater joint powers than non-obese children, at both weight acceptance and propulsion. Likewise, all children produced larger joint powers during acute loading conditions than unloaded. When body mass is a covariate, significant main effects for loading conditions remained for the hip and knee during weight acceptance and the hip and ankle at propulsion; no group differences remained significant. Obese children produced greater power generation at the hip and ankle during unloaded conditions than non-obese children during acute conditions. Only the ankle had greater power generation after accounting for body mass. The findings suggest that obese children must increase muscular contraction force to maintain normal gait function. While increased joint powers necessary for normal gait could result in incidental muscle strengthening of obese children, this persistent increase in muscular force demand could result in musculoskeletal injury.
Keyword Biomechanics
Lower extremity
Pediatrics
Obesity
Locomotion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Mater Research Institute-UQ (MRI-UQ)
Official 2015 Collection
 
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