Highlights
- •Impact force during gait is positively related with body weight in obese children.
- •Impact force during gait is negatively with lean mass in obese children.
- •Propulsive rate is positively related with lean mass in obese children.
- •Body composition is an important factor to prevent high impact forces during gait.
Abstract
Background
Obesity is now a serious worldwide challenge, especially in children. This condition
can cause a number of different health problems, including musculoskeletal disorders,
some of which are due to mechanical stress caused by excess body weight. The aim of
this study was to determine the association between body composition and the vertical
ground reaction force produced during walking in obese children.
Methods
Sixteen children participated in the study, six females and ten males [11.5 (1.2)
years old, 69.8 (15.5) kg, 1.56 (0.09) m, and 28.36 (3.74) kg/m2 of body mass index (BMI)]. Total weight, lean mass and fat mass were measured by
dual-energy X-ray absorptiometry and vertical forces while walking were obtained by
a force platform. The vertical force variables analysed were impact and propulsive
forces, and the rate of development of both. Multiple regression models for each vertical
force parameter were calculated using the body composition variables as input.
Findings
The impact force regression model was found to be positively related to the weight
of obese children and negatively related to lean mass. The regression model showed
lean mass was positively related to the propulsive rate. Finally, regression models
for impact and propulsive force showed a direct relationship with body weight.
Interpretation
Impact force is positively related to the weight of obese children, but lean mass
helps to reduce the impact force in this population. Exercise could help obese persons
to reduce their total body weight and increase their lean mass, thus reducing impact
forces during sports and other activities.
Keywords
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Article info
Publication history
Published online: December 14, 2016
Accepted:
December 13,
2016
Received:
June 3,
2016
Identification
Copyright
© 2016 Elsevier Ltd. All rights reserved.
