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Published in: Environmental Health and Preventive Medicine 1/2017

Open Access 01-12-2017 | Research article

Associations between accelerometer-measured physical activity and body fatness in school-aged children

Authors: Aleš Gába, Josef Mitáš, Lukáš Jakubec

Published in: Environmental Health and Preventive Medicine | Issue 1/2017

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Abstract

Background

The main aim of the study was to examine the cross-sectional associations between objectively measured physical activity (PA) and body fatness in 7–12-year-old children.

Methods

We performed an analysis of 365 children (209 girls). Participant recruitment was performed in eight randomly selected elementary schools in cities and towns with various numbers of inhabitants. The body composition analysis was performed according to a multi-frequency bioelectrical impedance analysis; PA was monitored using an accelerometer.

Results

In terms of the overall PA, boys were more active than girls. No significant associations (unadjusted and adjusted models) were found between light PA and all body fatness indicators in either sex. Moderate-to-vigorous PA was significantly negatively associated with all body fatness indicators only in girls. These associations strengthened after adjustment for age, height and sedentary time (β ranging from –0.49 to –0.36, P ≤ 0.01). In contrast, vigorous PA was strongly negatively associated with body fatness indicators only in boys. In the fully adjusted model the significant negative associations were found for fat mass percentage (β = –0.15, P = 0.048) and fat mass index (β = –0.15, P = 0.040).

Conclusions

The present study suggests that increasing sex-specific PA of different intensities may be an appropriate approach for decreasing body fatness in children. Longitudinal studies are needed to verify these associations.
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Metadata
Title
Associations between accelerometer-measured physical activity and body fatness in school-aged children
Authors
Aleš Gába
Josef Mitáš
Lukáš Jakubec
Publication date
01-12-2017
Publisher
BioMed Central
Published in
Environmental Health and Preventive Medicine / Issue 1/2017
Print ISSN: 1342-078X
Electronic ISSN: 1347-4715
DOI
https://doi.org/10.1186/s12199-017-0629-4

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