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Physical Activity During Recess Outdoors and Indoors Among Urban Public School Students, St. Louis, Missouri, 2010–2011

SexOutdoor, Mean (SD)Gym, Mean (SD)Classroom, Mean (SD)
Girls976 (385)692 (330)328 (465)
Boys1,281 (566)824 (459)378 (433)

Figure 1. Pedometer-recorded steps by recess location among school students in St. Louis, Missouri, 2010–2011. Bars represent steps per recess period by recess location (mean, standard deviation) averaged across 106 students. The number of recess observations was 291 outdoors, 196 in the gym, and 168 in the classroom. *Boys took more steps during outdoor recess than did girls (P < .0001).

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SexOutdoor, Mean (SD)Gym, Mean (SD)Classroom, Mean (SD)
Girls129 (21)122 (22)93 (15)
Boys128 (18)115 (17)100 (18)
All128 (20)118 (20)97 (17)

Figure 2. Heart rate by recess location among school students in St. Louis, Missouri, 2010-2011. Each circle and triangle represents a single recess observation (ie, an individual student’s average heart rate during a single recess period). Black squares represent the mean and standard deviation heart rate of the 26 students in each location.

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