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

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 assesse...

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Main Authors:	Borges, Alessandra, Gomes, Thayse Natacha, Santos, Daniel, Pereira, Sara, dos Santos, Fernanda K., Chaves, Raquel, Katzmarzyk, Peter T., Maia, José
Format:	Online
Language:	English
Published:	MDPI 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4377918/

id	pubmed-4377918
recordtype	oai_dc
spelling	pubmed-43779182015-04-27 A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children Borges, Alessandra Gomes, Thayse Natacha Santos, Daniel Pereira, Sara dos Santos, Fernanda K. Chaves, Raquel Katzmarzyk, Peter T. Maia, José Article 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. MDPI 2015-02-26 2015-03 /pmc/articles/PMC4377918/ /pubmed/25730296 http://dx.doi.org/10.3390/ijerph120302557 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Borges, Alessandra Gomes, Thayse Natacha Santos, Daniel Pereira, Sara dos Santos, Fernanda K. Chaves, Raquel Katzmarzyk, Peter T. Maia, José
spellingShingle	Borges, Alessandra Gomes, Thayse Natacha Santos, Daniel Pereira, Sara dos Santos, Fernanda K. Chaves, Raquel Katzmarzyk, Peter T. Maia, José A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
author_facet	Borges, Alessandra Gomes, Thayse Natacha Santos, Daniel Pereira, Sara dos Santos, Fernanda K. Chaves, Raquel Katzmarzyk, Peter T. Maia, José
author_sort	Borges, Alessandra
title	A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
title_short	A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
title_full	A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
title_fullStr	A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
title_full_unstemmed	A Count Model to Study the Correlates of 60 Min of Daily Physical Activity in Portuguese Children
title_sort	count model to study the correlates of 60 min of daily physical activity in portuguese children
description	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.
publisher	MDPI
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4377918/
_version_	1613205039624486912

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

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