title: Physical activity and screen-time viewing among elementary school-aged children in the United States from 2009 to 2010.
abstract: OBJECTIVES To describe the percentage of children who met physical activity and screen-time recommendations and to examine demographic differences. Recommendations for school-aged children include 60 minutes of daily moderate-to-vigorous physical activity and no more than 2 hours per day of screen-time viewing. DESIGN Cross-sectional study. SETTING Data from the 2009-2010 National Health and Nutrition Examination Survey, a representative sample of the US population. PARTICIPANTS Analysis included 1218 children 6 to 11 years of age. MAIN EXPOSURES Age, race/ethnicity, sex, income, family structure, and obesity status. MAIN OUTCOME MEASURES Proxy-reported adherence to physical activity and screen-time recommendations, separately and concurrently. RESULTS Based on proxy reports, overall, 70% of children met physical activity recommendations, and 54% met screen-time viewing recommendations. Although Hispanics were less likely to meet physical activity recommendations (adjusted odds ratio [aOR], 0.60 [95% CI, 0.38-0.95]), they were more likely to meet screen-time recommendations compared with non-Hispanic whites (aOR, 1.69 [95% CI, 1.18-2.43]). Only 38% met both recommendations concurrently. Age (9-11 years vs 6-8 years: aOR, 0.57 [95% CI, 0.38-0.85]) and obesity (aOR, 0.53 [95% CI, 0.38-0.73]) were inversely associated with concurrent adherence to both recommendations. CONCLUSIONS Fewer than 4 in 10 children met both physical activity and screen-time recommendations concurrently. The prevalence of sedentary behavior was higher in older children. Low levels of screen-time viewing may not necessarily predict higher levels of physical activity.
authors.affiliation: Divisionof Health and NutritionExamination Surveys, NationalCenter for Health Statistics,Centers for Disease Conntol and Prevention, Hyattsville, MD 20782, USA. tfakhouri@cdc.gov
authors.forename: Tala H I
authors.initials: TH
authors.lastname: Fakhouri
authors.forename: Jeffery P
authors.initials: JP
authors.lastname: Hughes
authors.forename: Debra J
authors.initials: DJ
authors.lastname: Brody
authors.forename: Brian K
authors.initials: BK
authors.lastname: Kit
authors.forename: Cynthia L
authors.initials: CL
authors.lastname: Ogden
mesh_terms: D000367:Age Factors; D002648:Child; D003201:Computers / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D005006:Ethnicity; D015444:Exercise; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D007182:Income; D008297:Male; D009749:Nutrition Surveys; D009765:Obesity; D044469:Racial Groups; D057185:Sedentary Behavior / Q000208:ethnology; D013690:Television / Q000706:statistics & numerical data*; D014481:United States; D018910:Video Games / Q000706:statistics & numerical data*