R Glenn Weaver1, Anthony Crimarco2, Timothy A Brusseau3, Collin A Webster4, Ryan D Burns5, James C Hannon6. 1. Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208. weaverrg@mailbox.sc.edu. 2. Department of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208. crimarco@email.sc.edu. 3. Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT 84112. tim.brusseau@utah.edu. 4. Department of Physical Education and Athletic Training, College of Education, University of South Carolina, Columbia, SC 29208. websterc@mailbox.sc.edu. 5. Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT 84112. burnsyry04@yahoo.com. 6. West Virginia University, Morgantown, WV 26506. jchannon@mail.wvu.edu.
Abstract
BACKGROUND: Schools should provide children 30 minutes/day of moderate-to-vigorous-physical-activity (MVPA). Determining school day segments that contribute to children's MVPA can inform school-based activity promotion. The purpose of this paper was to identify the proportion of children accumulating 30 minutes/day of school-based MVPA, and to identify school day segments' contribution to children's MVPA. METHODS: First-third graders (N = 323 [173 girls and 150 boys]) accelerometer-derived sedentary behaviors, light activity, and MVPA were measured for 1 to 5 school days. Children's activity was estimated during class time, lunch, physical education (PE), and recess. To explore disparities in MVPA, children were stratified into high/low-active groups. RESULTS: Girls and boys accumulated 30.4 and 34.4 minutes/day of MVPA on PE days and 23.5 and 27.3 minutes/day of MVPA on non-PE days. This translated to 36.5 and 44.1% of girls and boys accumulating 30 minutes of MVPA on PE days and 16.3 and 36.5% on non-PE days. On PE days, PE contributed the most MVPA for girls and boys (11.8 and 13.0 minutes/day), followed by class time (11.4 and 12.5 minutes/day), recess (5.2 and 6.5 minutes/day), and lunch (2.0 and 2.4 minutes/day). Disparities between high/low children were greatest during PE and class time. CONCLUSIONS: Most children were not accumulating 30 minutes/day of MVPA. PE and class time are promising school day segments for promoting MVPA.
BACKGROUND: Schools should provide children 30 minutes/day of moderate-to-vigorous-physical-activity (MVPA). Determining school day segments that contribute to children's MVPA can inform school-based activity promotion. The purpose of this paper was to identify the proportion of children accumulating 30 minutes/day of school-based MVPA, and to identify school day segments' contribution to children's MVPA. METHODS: First-third graders (N = 323 [173 girls and 150 boys]) accelerometer-derived sedentary behaviors, light activity, and MVPA were measured for 1 to 5 school days. Children's activity was estimated during class time, lunch, physical education (PE), and recess. To explore disparities in MVPA, children were stratified into high/low-active groups. RESULTS:Girls and boys accumulated 30.4 and 34.4 minutes/day of MVPA on PE days and 23.5 and 27.3 minutes/day of MVPA on non-PE days. This translated to 36.5 and 44.1% of girls and boys accumulating 30 minutes of MVPA on PE days and 16.3 and 36.5% on non-PE days. On PE days, PE contributed the most MVPA for girls and boys (11.8 and 13.0 minutes/day), followed by class time (11.4 and 12.5 minutes/day), recess (5.2 and 6.5 minutes/day), and lunch (2.0 and 2.4 minutes/day). Disparities between high/low children were greatest during PE and class time. CONCLUSIONS: Most children were not accumulating 30 minutes/day of MVPA. PE and class time are promising school day segments for promoting MVPA.
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