title: Associations of physical activity and dietary behaviors with children's health and academic problems.
abstract: BACKGROUND
  We examined the associations of physical activities and dietary behaviors with children's health and academic-behavioral problems.
  
  
  METHODS
  We employed a Community-wide Children's Health Assessment and Planning Survey to examine physical activity, healthy meals, health status, and academic-behavioral problems in 3708 children 7 to 14 years of age. Statistical associations were examined with chi-square test and logistic regression analysis; we calculated odds ratios (ORs) and 95% confidence intervals (CIs).
  
  
  RESULTS
  Among these children, 30.2% were overweight-obese, 11.0% had academic problems, and 7.9% had behavioral problems. Children classified as healthy eaters were more likely to exercise ≥4 days/week (79.1% vs 64.6%, OR: 2.08, 95% CI: 1.14 to 2.49), less likely to be overweight-obese (27.7% vs 44.6%, OR: 0.48, CI: 0.31 to 0.73), less likely to have academic problems (9.1% vs 16.1%, OR: 0.57, 95% CI: 0.41 to 0.79) and behavioral problems (6.9% vs 13.9%, OR: 0.46, 95% CI: 0.32 to 0.66) compared with their less healthy eating peers. Physical activity and healthy meals were associated with an improved health status (p < .001). However, the proportions of children taking unhealthy meals or choosing sedentary lifestyle increased as the cohorts progressed (p < .05) from childhood (7 to 8 years) to adolescence (13 to 14 years).
  
  
  CONCLUSIONS
  Healthy (or unhealthy) lifestyle behaviors are significantly interrelated. Children who take healthy meals and exercise often are associated with better health and fewer academic and behavioral problems. Unfortunately, taking unhealthy meals and sedentary lifestyle characterize a growing proportion of young adolescents. Thus, curbing unhealthy lifestyle behaviors should start in early childhood.
authors.affiliation: Department of Integrative Physiology, Cardiovascular Research Institute and Texas Prevention Institute, UNT Health Science Center, Fort Worth, TX 76107, USA. xiangrong.shi@unthsc.edu
authors.forename: Xiangrong
authors.initials: X
authors.lastname: Shi
authors.forename: Larry
authors.initials: L
authors.lastname: Tubb
authors.forename: Sheryl T
authors.initials: ST
authors.lastname: Fingers
authors.forename: Shande
authors.initials: S
authors.lastname: Chen
authors.forename: James L
authors.initials: JL
authors.lastname: Caffrey
mesh_terms: D000293:Adolescent; D002648:Child; D002652:Child Behavior / Q000523:psychology*; D002664:Child Nutritional Physiological Phenomena; D015444:Exercise; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D015438:Health Behavior; D006266:Health Education; D006801:Humans; D008019:Life Style; D008297:Male; D009765:Obesity / Q000517:prevention & control*; D010988:Play and Playthings; D057185:Sedentary Behavior