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Int. J. Environ. Res. Public Health 2015, 12(3), 2557-2573; doi:10.3390/ijerph120302557

A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children

1
CIFI2D, Faculty of Sports, University of Porto, Rua Dr. Plácido Costa, 91, 4250-Porto, Portugal
2
Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, PE, Brazil
3
Physical Education Department, Federal University of Technology-Parana, Campus Curitiba, Curitiba/PR, 3165—Rebouças CEP 80230-901, Brazil
4
Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 17 November 2014 / Revised: 8 February 2015 / Accepted: 23 February 2015 / Published: 26 February 2015
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Abstract

This study aimed to present data on Portuguese children (aged 9–11 years) complying with moderate-to-vigorous physical activity (MVPA) guidelines, and to identify the importance of correlates from multiple domains associated with meeting the guidelines. Physical activity (PA) was objectively assessed by accelerometry throughout seven days on 777 children. A count model using Poisson regression was used to identify the best set of correlates that predicts the variability in meeting the guidelines. Only 3.1% of children met the recommended daily 60 min of MVPA for all seven days of the week. Further, the Cochrane–Armitage chi-square test indicated a linear and negative trend (p < 0.001) from none to all seven days of children complying with the guidelines. The count model explained 22% of the variance in meeting MVPA guidelines daily. Being a girl, having a higher BMI, belonging to families with higher income, sleeping more and taking greater time walking from home to a sporting venue significantly reduced the probability of meeting daily recommended MVPA across the seven days. Furthermore, compared to girls, increasing sleep time in boys increased their chances of compliance with the MVPA recommendations. These results reinforce the relevance of considering different covariates’ roles on PA compliance when designing efficient intervention strategies to promote healthy and active lifestyles in children. View Full-Text
Keywords: physical activity; children; ISCOLE; MVPA physical activity; children; ISCOLE; MVPA
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Borges, A.; Gomes, T.N.; Santos, D.; Pereira, S.; Santos, F.K.; Chaves, R.; Katzmarzyk, P.T.; Maia, J. A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children. Int. J. Environ. Res. Public Health 2015, 12, 2557-2573.

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Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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