Physical activity levels among children attending after-school programs

Trost, Stewart G., Rosenkranz, Richard R. and Dzewaltowski, David (2008) Physical activity levels among children attending after-school programs. Medicine and Science in Sports and Exercise, 40 4: 622-629. doi:10.1249/MSS.0b013e318161eaa5

Author Trost, Stewart G.
Rosenkranz, Richard R.
Dzewaltowski, David
Title Physical activity levels among children attending after-school programs
Journal name Medicine and Science in Sports and Exercise   Check publisher's open access policy
ISSN 01955-9131; 1530-0315
Publication date 2008-04
Sub-type Article (original research)
DOI 10.1249/MSS.0b013e318161eaa5
Volume 40
Issue 4
Start page 622
End page 629
Total pages 8
Language eng
Subject 11 Medical and Health Sciences
1106 Human Movement and Sports Science
Abstract AB 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 +/- 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. (C)2008The American College of Sports Medicine
Keyword Free Play activity sessions
physical activity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
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Created: Tue, 15 Dec 2009, 16:10:53 EST by Ms May Balasaize on behalf of Faculty Of Health Sciences