Physical activity levels among children attending after-school programs

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dc.contributor.author Trost, Stewart G.
dc.contributor.author Rosenkranz, Richard R.
dc.contributor.author Dzewaltowski, David
dc.date.accessioned 2011-10-05T15:04:54Z
dc.date.available 2011-10-05T15:04:54Z
dc.date.issued 2011-10-05
dc.identifier.uri http://hdl.handle.net/2097/12203
dc.description.abstract Purpose: To describe the physical activity (PA) levels of children attending after-school programs, 2) examine PA levels in specific after-school sessions and activity contexts, and 3) evaluate after-school PA differences in groups defined by sex and weight status. Methods: One hundred forty-seven students in grades 3–6 (mean age: 10.1 T 0.7, 54.4% male, 16.5 % overweight (OW), 22.8% at-risk for OW) from seven after-school programs in the midwestern United States wore Actigraph GT1M accelerometers for the duration of their attendance to the program. PA was objectively assessed on six occasions during an academic year (three fall and three spring). Stored activity counts were uploaded to a customized data-reduction program to determine minutes of sedentary (SED), light (LPA), moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity. Time spent in each intensity category was calculated for the duration of program attendance, as well as specific after-school sessions (e.g., free play, snack time). Results: On average, participants exhibited 42.6 min of SED, 40.8 min of LPA, 13.4 min of MPA, and 5.3 min of VPA. The average accumulation of MVPA was 20.3 min. Boys exhibited higher levels of MPA, VPA, and MVPA, and lower levels of SED and LPA, than girls. OW and at-risk-for-OW students exhibited significantly less VPA than nonoverweight students, but similar levels of LPA, MPA, and MVPA. MVPA levels were significantly higher during free-play activity sessions than during organized or structured activity sessions. Conclusion: After-school programs seem to be an important contributor to the PA of attending children. Nevertheless, ample room for improvement exists by making better use of existing time devoted to physical activity. en_US
dc.relation.uri http://journals.lww.com/acsm-msse/toc/2008/04000 en_US
dc.subject Youth en_US
dc.subject Motion sensors en_US
dc.subject Accerometer en_US
dc.subject Exercise en_US
dc.subject Out-of-school time en_US
dc.title Physical activity levels among children attending after-school programs en_US
dc.type Article (publisher version) en_US
dc.date.published 2008 en_US
dc.citation.doi doi: 10.1249/MSS.0b013e318161eaa5 en_US
dc.citation.epage 629 en_US
dc.citation.issue 4 en_US
dc.citation.jtitle Medicine & Science in Sports & Exercise en_US
dc.citation.spage 622 en_US
dc.citation.volume 40 en_US
dc.contributor.authoreid ricardo en_US
dc.contributor.authoreid dadx en_US

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