The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study

To examine the strength and direction of the relationship between physical activity level, screen use and BMI in a cohort at ages 6, 8, 10 and 14 yrs as part of a prospective longitudinal cohort study. The sample comprised 1403 males and females who participated in the follow-up survey at 14 yrs of...

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Main Authors: Hands, B., Chivers, P., Parker, H., Beilin, L., Kendall, Garth, Larkin, D.
Format: Journal Article
Published: Sports Medicine Australia 2011
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/7608
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author Hands, B.
Chivers, P.
Parker, H.
Beilin, L.
Kendall, Garth
Larkin, D.
author_facet Hands, B.
Chivers, P.
Parker, H.
Beilin, L.
Kendall, Garth
Larkin, D.
author_sort Hands, B.
building Curtin Institutional Repository
collection Online Access
description To examine the strength and direction of the relationship between physical activity level, screen use and BMI in a cohort at ages 6, 8, 10 and 14 yrs as part of a prospective longitudinal cohort study. The sample comprised 1403 males and females who participated in the follow-up survey at 14 yrs of age between 2003 and 2005. Exploratory structural equation modelling was used to examine the interrelationships between physical activity level, BMI and screen time at 6, 8, 10 and 14 yrs. Predictors of BMI at 6, 8, 10 and 14 yrs explained 1.3, 76.1, 80.1 and 73.1 percent of the variances, respectively, with previous BMI the largest predictor [χ2 = 43.082, df = 36, p = 194]. Increased screen time predicted higher BMI and lower physical activity at 8 and 10 yrs but not 14 yrs. At 14 yrs, physical activity predicted BMI. Sedentary patterns of behaviour in early childhood were predictive of later and concurrent obesity, whereas physical activity was predictive of obesity in adolescence. Different intervention targets are required for children and adolescents.
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publishDate 2011
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spelling curtin-20.500.11937-76082017-09-13T15:54:28Z The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study Hands, B. Chivers, P. Parker, H. Beilin, L. Kendall, Garth Larkin, D. Longitudinal Physical activity Body Mass Index Children Television viewing Adolescents To examine the strength and direction of the relationship between physical activity level, screen use and BMI in a cohort at ages 6, 8, 10 and 14 yrs as part of a prospective longitudinal cohort study. The sample comprised 1403 males and females who participated in the follow-up survey at 14 yrs of age between 2003 and 2005. Exploratory structural equation modelling was used to examine the interrelationships between physical activity level, BMI and screen time at 6, 8, 10 and 14 yrs. Predictors of BMI at 6, 8, 10 and 14 yrs explained 1.3, 76.1, 80.1 and 73.1 percent of the variances, respectively, with previous BMI the largest predictor [χ2 = 43.082, df = 36, p = 194]. Increased screen time predicted higher BMI and lower physical activity at 8 and 10 yrs but not 14 yrs. At 14 yrs, physical activity predicted BMI. Sedentary patterns of behaviour in early childhood were predictive of later and concurrent obesity, whereas physical activity was predictive of obesity in adolescence. Different intervention targets are required for children and adolescents. 2011 Journal Article http://hdl.handle.net/20.500.11937/7608 10.1016/j.jsams.2011.03.011 Sports Medicine Australia restricted
spellingShingle Longitudinal
Physical activity
Body Mass Index
Children
Television viewing
Adolescents
Hands, B.
Chivers, P.
Parker, H.
Beilin, L.
Kendall, Garth
Larkin, D.
The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title_full The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title_fullStr The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title_full_unstemmed The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title_short The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
title_sort associations between physical activity, screen time and weight from 6 to 14 yrs: the raine study
topic Longitudinal
Physical activity
Body Mass Index
Children
Television viewing
Adolescents
url http://hdl.handle.net/20.500.11937/7608