International Study of Objectively-measured Physical Activity and Sedentary Time With Body Mass Index and Obesity: IPEN Adult Study

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aut.relation.journalInternational Journal of Obesityen_NZ
aut.researcherHinckson, Erica
dc.contributor.authorVan Dyck, Den_NZ
dc.contributor.authorCerin, Een_NZ
dc.contributor.authorDe Bourdeaudhuij, Ien_NZ
dc.contributor.authorHinckson, Een_NZ
dc.contributor.authorReis, RSen_NZ
dc.contributor.authorDavey, Ren_NZ
dc.contributor.authorSarmiento, OLen_NZ
dc.contributor.authorMitas, Jen_NZ
dc.contributor.authorTroelsen, Jen_NZ
dc.contributor.authorMacFarlane, Den_NZ
dc.contributor.authorSalvo, Den_NZ
dc.contributor.authorAguinaga-Ontoso, Ien_NZ
dc.contributor.authorOwen, Nen_NZ
dc.contributor.authorCain, KLen_NZ
dc.contributor.authorSallis, JFen_NZ
dc.date.accessioned2020-02-11T01:53:52Z
dc.date.available2020-02-11T01:53:52Z
dc.date.copyright2014en_NZ
dc.date.issued2014en_NZ
dc.description.abstractBackground:Physical activity (PA) has been consistently implicated in the etiology of obesity, while recent evidence on the importance of sedentary time remains inconsistent. Understanding of dose-response associations of PA and sedentary time with overweight and obesity in adults can be improved with large-scale studies using objective measures of PA and sedentary time. The purpose of this study was to examine the strength, direction and shape of dose-response associations of accelerometer-based PA and sedentary time with BMI and weight status in 10 countries, and the moderating effects of study site and gender.Methods:Data from the International Physical activity and the Environment Network (IPEN) Adult study were used. IPEN Adult is an observational multi-country cross-sectional study, and 12 sites in 10 countries are included. Participants wore an accelerometer for seven consecutive days, completed a socio-demographic questionnaire and reported height and weight. In total, 5712 adults (18-65 years) were included in the analyses. Generalized additive mixed models, conducted in R, were used to estimate the strength and shape of the associations.Results:A curvilinear relationship of accelerometer-based moderate-to-vigorous PA and total counts/minute with BMI and the probability of being overweight/obese was identified. The associations were negative, but weakened at higher levels of moderate-to-vigorous PA (>50 min/day) and higher counts/minute. No associations between sedentary time and weight outcomes were found. Complex site- and gender-specific findings were revealed for BMI, but not for weight status.Conclusions:Based on these results, the current Institute of Medicine recommendation of 60 minutes/day of moderate-to-vigorous PA to prevent weight gain in normal-weight adults was supported. No relationship between sedentary time and the weight outcomes was present, calling for further examination. If moderator findings are confirmed, the relationship between PA and BMI may be country- and gender-dependent, which could have important implications for country-specific health guidelines.International Journal of Obesity accepted article preview online, 02 July 2014; doi:10.1038/ijo.2014.115.en_NZ
dc.identifier.citationIPEN Adult Study. International Journal of Obesity, 39, 199–207 (2015). https://doi.org/10.1038/ijo.2014.115
dc.identifier.doi10.1038/ijo.2014.115en_NZ
dc.identifier.issn1476-5497en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/13130
dc.languageENGen_NZ
dc.publisherSpringer Nature
dc.relation.urihttps://www.nature.com/articles/ijo2014115
dc.rightsCopyright © 2014 Nature Publishing Group (www.nature.com). All Rights Reserved. Authors retain the right to place his/her pre-publication version of the work on a personal website or institutional repository for non commercial purposes. The definitive version was published in (see Citation). The original publication is available at (see Publisher’s Version).
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectObesity; Accelerometers; Exercise; Sitting
dc.titleInternational Study of Objectively-measured Physical Activity and Sedentary Time With Body Mass Index and Obesity: IPEN Adult Studyen_NZ
dc.typeJournal Article
pubs.elements-id168666
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Faculty of Business, Economics and Law
pubs.organisational-data/AUT/Faculty of Business, Economics and Law/NZ Work Research Institute
pubs.organisational-data/AUT/Health & Environmental Science
pubs.organisational-data/AUT/Health & Environmental Science/Sports & Recreation
pubs.organisational-data/AUT/Health & Environmental Science/SPRINZ
pubs.organisational-data/AUT/PBRF
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences/HS Sports & Recreation 2018 PBRF
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