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BMC Public Health
Published in: BMC Public Health 1/2016

Open Access 01-12-2015 | Research article

Screen-based sedentary behavior and associations with functional strength in 6–15 year-old children in the United States

Authors: Lisa R. Edelson, Kevin C. Mathias, Victor L. Fulgoni III, Leonidas G. Karagounis

Published in: BMC Public Health | Issue 1/2016

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Abstract

Background

Physical strength is associated with improved health outcomes in children. Heavier children tend to have lower functional strength and mobility. Physical activity can increase children’s strength, but it is unknown how different types of electronic media use impact physical strength.

Methods

Data from the NHANES National Youth Fitness Survey (NNYFS) from children ages 6–15 were analyzed in this study. Regression models were conducted to determine if screen-based sedentary behaviors (television viewing time, computer/video game time) were associated with strength measures (grip, leg extensions, modified pull-ups, plank) while controlling for potential confounders including child age, sex, BMI z-score, and days per week with 60+ minutes of physical activity. Grip strength and leg extensions divided by body weight were analyzed to provide measures of relative strength together with pull-ups and plank, which require lifting the body.

Results

The results from the regression models showed the hypothesized inverse association between TV time and all strength measures. Computer time was only significantly inversely associated with the ability to do one or more pull-ups.

Conclusions

This study shows that television viewing, but not computer/videogames, is inversely associated with measures of child strength while controlling for child characteristics and physical activity. These findings suggest that “screen time” may not be a unified construct with respect to strength outcomes and that further exploration of the potential benefits of reducing television time on children’s strength and related mobility is needed.
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Metadata
Title
Screen-based sedentary behavior and associations with functional strength in 6–15 year-old children in the United States
Authors
Lisa R. Edelson
Kevin C. Mathias
Victor L. Fulgoni III
Leonidas G. Karagounis
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Public Health / Issue 1/2016
Electronic ISSN: 1471-2458
DOI
https://doi.org/10.1186/s12889-016-2791-9

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