To evaluate a multicomponent health promotion program targeting preschoolers' physical activity (PA). PA of children from 23 German daycare facilities (DFs; 13 interventionDFs, 10 controlDFs) was measured via accelerometry at baseline and after 12months. Children's sedentary time, light PA, and moderate to vigorous PA were estimated. Adherence was tracked with paper-and-pencil calendars. Mixed-model regression analyses were used to assess intervention effects. PA data were analyzed from 183 (4.2 [0.8]y, 48.1% boys) children. At follow-up, children in DF groups with more than 50% adherence to PA intervention components showed an increase of 9 minutes of moderate to vigorous PA per day (β = 9.28; 95% confidence interval [CI], -0.16 to 18.72) and a 19-minute decrease in sedentary time (β = -19.25; 95% CI, -43.66 to 5.16) compared with the control group, whereas children's PA of those who were exposed to no or less than 50% adherence remained unchanged (moderate to vigorous PA: β = 0.34; 95% CI, -13.73 to 14.41; sedentary time: β = 1.78; 95% CI, -26.54 to 30.09). Notable effects were found in children with migration background. Only small benefits in PA outcomes were observed after 1year. A minimum of 50% adherence to the intervention seems to be crucial for facilitating intervention effects.
Read full abstract