Body size and walking cadence affect lower extremity joint power in children's gait

Shultz, Sarah P., Hills, Andrew P., Sitler, Michael R. and Hillstrom, Howard J. (2010) Body size and walking cadence affect lower extremity joint power in children's gait. Gait and Posture, 32 2: 248-252. doi:10.1016/j.gaitpost.2010.05.001

Author Shultz, Sarah P.
Hills, Andrew P.
Sitler, Michael R.
Hillstrom, Howard J.
Title Body size and walking cadence affect lower extremity joint power in children's gait
Journal name Gait and Posture   Check publisher's open access policy
ISSN 0966-6362
Publication date 2010-06
Sub-type Article (original research)
DOI 10.1016/j.gaitpost.2010.05.001
Open Access Status Not Open Access
Volume 32
Issue 2
Start page 248
End page 252
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Obese children move less and with greater difficulty than normal-weight counterparts but expend comparable energy. Increased metabolic costs have been attributed to poor biomechanics but few studies have investigated the influence of obesity on mechanical demands of gait. This study sought to assess three-dimensional lower extremity joint powers in two walking cadences in 28 obese and normal-weight children. 3D-motion analysis was conducted for five trials of barefoot walking at self-selected and 30% greater than self-selected cadences. Mechanical power was calculated at the hip, knee, and ankle in sagittal, frontal and transverse planes. Significant group differences were seen for all power phases in the sagittal plane, hip and knee power at weight acceptance and hip power at propulsion in the frontal plane, and knee power during mid-stance in the transverse plane. After adjusting for body weight, group differences existed in hip and knee power phases at weight acceptance in sagittal and frontal planes, respectively. Differences in cadence existed for all hip joint powers in the sagittal plane and frontal plane hip power at propulsion. Frontal plane knee power at weight acceptance and sagittal plane knee power at propulsion were significantly different between cadences. Larger joint powers in obese children contribute to difficulty performing locomotor tasks, potentially decreasing motivation to exercise.
Keyword Lower extremity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

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