title: Associations of school violence with physical activity among U.S. high school students.
abstract: BACKGROUND
  This study investigated associations of violence-related behaviors with physical activity (PA)-related behaviors among U.S. high school students.
  
  
  METHODS
  Data from the 2009 national Youth Risk Behavior Survey, a cross-sectional survey of a nationally representative sample of 9th-12th grade students, were analyzed. Sex-stratified, adjusted odds ratios (aORs) and 95% confidence intervals (CIs) were estimated for associations between violence-related behaviors and being physically active for ≥60 minutes daily, sports participation, TV watching for ≥3 hours/day, and video game/computer use for ≥3 hours/day.
  
  
  RESULTS
  Among male students, at-school bullying victimization was negatively associated with daily PA (aOR: 0.72; 95% CI: 0.58-0.87) and sports participation; skipping school because of safety concerns was positively associated with video game/computer use (1.42; 1.01-2.00); and physical fighting was positively associated with daily PA. Among female students, at-school bullying victimization and skipping school because of safety concerns were both positively associated with video game/computer use (1.46; 1.19-1.79 and 1.60; 1.09-2.34, respectively), and physical fighting at school was negatively associated with sports participation and positively associated with TV watching.
  
  
  CONCLUSIONS
  Bullying victimization emerged as a potentially important risk factor for insufficient PA. Schools should consider the role of violence in initiatives designed to promote PA.
authors: Division of Adolescent and School Health, Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, Atlanta, GA.
authors: Zewditu
authors: Z
authors: Demissie
authors: Richard
authors: R
authors: Lowry
authors: Danice K
authors: DK
authors: Eaton
authors: Marci F
authors: MF
authors: Hertz
authors: Sarah M
authors: SM
authors: Lee
mesh_terms: D000293:Adolescent; D040343:Behavioral Risk Factor Surveillance System; D058445:Bullying / Q000523:psychology*; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005239:Fear / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D016017:Odds Ratio; D012307:Risk Factors; D012449:Safety; D012574:Schools / Q000706:statistics & numerical data; D057185:Sedentary Behavior; D017678:Sex Distribution; D013177:Sports / Q000502:physiology* / Q000523:psychology / Q000706:statistics & numerical data; D013334:Students / Q000523:psychology* / Q000706:statistics & numerical data; D013997:Time Factors; D014481:United States; D014754:Violence / Q000523:psychology* / Q000706:statistics & numerical data