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Active commuting to school and association with physical activity and adiposity among US youth

Mendoza, Jason A., Watson, Kathy, Nguyen, Nga, Cerin, Ester, Baranowski, Tom and Nicklas, Theresa A. 2011, Active commuting to school and association with physical activity and adiposity among US youth, Journal of physical activity and health, vol. 8, no. 4, pp. 488-495.

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Title Active commuting to school and association with physical activity and adiposity among US youth
Author(s) Mendoza, Jason A.
Watson, Kathy
Nguyen, Nga
Cerin, Ester
Baranowski, Tom
Nicklas, Theresa A.
Journal name Journal of physical activity and health
Volume number 8
Issue number 4
Start page 488
End page 495
Total pages 8
Publisher Human Kinetics
Place of publication Champaign, Ill.
Publication date 2011-05
ISSN 1543-3080
1543-5474
Keyword(s) obesity
pediatric
walking
bicycling
school-based
Summary Background: Walking or bicycling to school (ie, active commuting) has shown promise for improving physical activity and preventing obesity in youth. Our objectives were to examine, among US youth, whether active commuting was inversely associated with adiposity and positively associated with moderate-to-vigorous physical activity (MVPA). We also examined whether MVPA mediated the relationships between active commuting and adiposity.

Methods: Using data of participants aged 12 to 19 years from the US National Health and Nutrition Examination Survey 2003 to 2004 (n = 789 unweighted), we constructed multiple linear regression models that controlled for dietary energy intake and sociodemographics. The main exposure variable was active commuting. The outcomes were BMI z-score, waist circumference, skinfolds and objectively measured MVPA. The product-of-coefficients method was used to test for mediation.

Results: Active commuting was inversely associated with BMI z-score (β = –0.07, P = .046) and skinfolds (β = –0.06, P = .029), and positively associated with overall daily (β = 0.12, P = .024) and before- and after-school (β = 0.20, P < .001) MVPA. Greater before- and after-school MVPA explained part of the relationship between active commuting and waist circumference (Sobel z = –1.98, P = .048).

Conclusions: Active commuting was associated with greater MVPA and lower measures of adiposity among US youth. Before- and after-school MVPA mediated the relationships between active commuting and waist circumference.
Language eng
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Human Kinetics
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30055847

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
Open Access Collection
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.