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dc.contributor.authorCorder, Kirsten
dc.contributor.authorCraggs, Christopher
dc.contributor.authorJones, Andrew P.
dc.contributor.authorEkelund, Ulf
dc.contributor.authorGriffin, Simon J.
dc.contributor.authorvan Sluijs, Esther M. F.
dc.date.accessioned2014-01-14T11:43:49Z
dc.date.available2014-01-14T11:43:49Z
dc.date.issued2013
dc.identifierSeksjon for idrettsmedisinske fag / Department of Sports Medicine
dc.identifier.citationInternational Journal of Behavioral Nutrition and Physical Activity. 2013, 10, 69no_NO
dc.identifier.urihttp://hdl.handle.net/11250/171240
dc.description© 2013 Corder et al.; licensee BioMed Central Ltd.no_NO
dc.description.abstractBackground Predictors of physical activity (PA) change are rarely investigated separately for different PA intensities and for weekdays/weekends. We investigated whether individual-level predictors of one-year change in objectively-measured physical activity differ for moderate PA (MPA) and vigorous PA (VPA) and for weekends and weekdays. Methods Accelerometer-assessed PA (mins) was obtained at baseline and +1 year (n = 875, 41.5% male, Mean ± SD baseline age: 9.8 ± 0.4 years-old). Potential predictors (n = 38) were assessed at baseline from psychological (e.g. self-efficacy), socio-cultural (e.g. parent support) and environmental domains (e.g. land use). Associations between predictors and change in MPA (2000–3999 counts/minute (cpm)) and VPA (≥4000 cpm) separately for weekdays and weekends were studied using multi-level linear regression. Analyses were adjusted for school clustering, sex and baseline PA. Results Weekend PA declined (MPA decline 4.6 ± 21.8 mins/day; VPA decline: 2.1 ± 20.1 mins/day; both p < 0.001) whereas weekday PA did not significantly change. Higher baseline PA and being a girl were associated with greater PA declines in all four outcomes; remaining predictors differed for MPA and VPA and/or weekdays and weekends. Family logistic support was associated with less of a decline in weekend MPA (CI 95%) 0.15 (0.05, 0.25) and VPA 0.19 (0.09, 0.29), and peer support with less of a decline in weekday MPA 0.18 (0.02, 0.34) and VPA 0.22 (0.06, 0.38). Conclusions Results highlight the relevance of investigating predictors of PA change separately for different PA intensities and for weekdays/weekends. In addition to continued focus on school PA promotion, more effort to target interventions during weekends, such as in the family and community appears important. Encouraging peer support to increase weekday PA and targeting parent support for weekend PA may be health promotion priorities.no_NO
dc.language.isoengno_NO
dc.publisherBioMed Centralno_NO
dc.subjectlongitudinalno_NO
dc.subjectbehaviour changeno_NO
dc.subjectchildhoodno_NO
dc.subjectdeterminantsno_NO
dc.subjectphysical activityno_NO
dc.subjectpredictorsno_NO
dc.titlePredictors of change differ for moderate and vigorous intensity physical activity and for weekdays and weekends: a longitudinal analysisno_NO
dc.typeJournal articleno_NO
dc.typePeer reviewedno_NO
dc.subject.nsiVDP::Social science: 200::Social science in sports: 330no_NO
dc.subject.nsiVDP::Medical disciplines: 700::Sports medicine: 850no_NO
dc.source.journalInternational Journal of Behavioral Nutrition and Physical Activityno_NO
dc.identifier.doi10.1186/1479-5868-10-69


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