Journal
RESEARCH IN SPORTS MEDICINE
Volume 22, Issue 2, Pages 172-184Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15438627.2014.881823
Keywords
gait and posture; stair descent; children with obesity
Categories
Funding
- Project of Shandong Education Department [J08LE13]
- Natural Science Foundation of Shandong Province [ZR2010CM064]
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This study investigates the effects of backpack weight on posture, gait pattern, and ground reaction forces for children with obesity in an attempt to define a safe backpack weight limit for them. A total of 16 obese (11.19 +/- 0.66 years of age) and 21 normal body weight (11.13 +/- 0.69 years of age) schoolboys were recruited. Two force plates and two video cameras were used. Multivariate analysis of variance with repeated measures was employed. Obese children showed increased trunk and head forward inclination angle, gait cycle duration and stance phase, decreased swing phase, and increased ground reaction force in the medial-lateral and anterior-posterior directions when compared with male children with a normal body weight. The changes were observed even with an empty backpack in comparison with normal body weight children and a 15% increase in backpack weight led to further instability and damage on their already strained bodies.
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