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Table 2 Baseline and During Preschool Physical Activity Measures

From: Design and baseline characteristics of the Short bouTs of Exercise for Preschoolers (STEP) study

Variable SBS-PA UPA p All
  (n = 141) (n = 150)   (n = 291)
Age (yrs) 4.0 ± 0.8 4.1 ± 0.9 0.36 4.1 ± 0.8
Weight (kg) 17.3 ± 3.0 18.1 ± 3.5 0.04 17.7 ± 3.3
Height (cm) 102.4 ± 6.9 103.0 ± 6.3 0.39 102.7 ± 6.6
Body mass index (kg/m2) 16.4 ± 1.4 17.0 ± 2.2 0.06 16.7 ± 1.9
Body mass index percentile 64.8 ± 28.4 71.9 ± 24.5 0.03 68.5 ± 26.7
Screen media use (weekly minutes)     
 Television viewing 87.9 ± 155.9 96.6 ± 165.7 0.81 92.5 ± 160.9
 VCR/DVD 40.7 ± 113.1 42.2 ± 111.3 0.98 41.5 ± 111.9
 Video game 13.3 ± 43.7 26.7 ± 77.1 0.12 20.4 ± 63.9
Percent time spent in Sedentary PA 75.4 ± 9.3 74.9 ± 9.4 0.18 74.2 ± 9.3
Percent time spent in Light PA 19.0 ± 4.8 18.1 ± 4.8 0.19 18.6 ± 4.8
Percent time spent in MVPA 6.7 ± 3.4 6.2 ±3.4 0.26 6.4 ± 3.4
Percent of direct observation at levels of PA     
 Sedentary 26.9 ± 27.2 22.0 ± 25.6 0.26 24.5 ± 26.4
 Light 31.2 ± 21.6 48.9 ± 23.4 0.0001 40.0 ± 24.1
 MVPA 39.0 ± 31.0 27.5 ± 27.4 0.06 33.6 ± 29.8
  1. Values are represented as means ± sd. SBS-PA = Short bouts structured-physical activity; UPA = Unstructured physical activity; PA = physical activity, MVPA = moderate to vigorous PA. Percent times spent in PA intensity are determined for the total preschool day. Percent of direct observation at levels of PA are determined for gross-motor playtime.