Physical activity levels of urban and rural young children in the Iowa Bone Development Study
نویسندگان
چکیده
A better understanding of the association of the environment to young children’s physical activity is needed to design effective behavioral interventions and to improve communities' infrastructures in ways that support the development of healthy behaviors. This thesis used data from the Iowa Bone Development Study (IBDS) to examine activity behaviors of young children in urban and rural Iowa. Mean daily minutes of moderate through vigorous physical activity (MVPA) and vigorous physical activity (VPA), as recorded by accelerometry-based physical activity monitoring in the IBDS, were compared by level of socioeconomic status (SES) and census block type (urban or rural). Media use (television and videogames), in hours per day by parental report, was similarly compared. Logistic regression was used to assess the association of census block type (urban or rural) with lower categories of MVPA and VPA, and with a high category of media use (exceeding the American Academy of Pediatrics (AAP) recommendation for ≤ 2 hours/day of media). Mean age of the 400 participants included in this thesis was 5.65 years (SD = 0.53), females comprised 53.5%. Children’s mean daily minutes of MVPA and VPA were not significantly different among SES levels nor between urban and rural census blocks. Rural children had decreased odds for lower categories of MVPA (Boys’ OR 0.91; 95% CI: 0.51, 1.60) (Girls’ OR 0.89; 95% CI: 0.53, 1.50) and VPA (Boys’ OR 0.84; 95% CI: 0.48, 1.48) (Girls’ OR 0.90; 95% CI: 0.54, 1.52), but not significantly so. Lower SES boys and girls engaged in more daily media use (hours/day) than higher SES children, and a higher proportion of low SES children exceeded the AAP recommendation than did middle-level or high SES children. Rural boys’ media use (2.7 hours/day) was higher than that of urban boys (2.3 hours/day) (95% CI: 0.06, 0.80 hours/day), whereas urban and rural girls' media hours/day were not significantly different. Odds for excess media use were higher for rural boys (OR 2.11; 95% CI: 1.14,
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