title: Screen time, cardiorespiratory fitness and adiposity among school-age children from Monteria, Colombia.
abstract: OBJECTIVE
  To explore the association between electronic media exposure (television viewing time, personal computer/video game use, total screen time), and waist circumference and body mass index, and study whether this association is independent of cardiorespiratory fitness, in a representative sample of adolescents from Montería, Colombia.
  
  
  METHODS
  Cross-sectional study analyzing data from 546 students aged 11-18 years, from fourteen randomly selected schools. Z-scores for WC and BMI were calculated.
  
  
  METHODS
  The physical activity module of the Global School Health Survey 2007 was used to determine EME, and the shuttle run test was used to assess CRF. Linear regression models adjusted by age, school location, physical activity level, type of institution (public or private), consumption of sweetened beverages, fast food, and fried food were used.
  
  
  RESULTS
  Among boys, independently of cardiorespiratory fitness, high television viewing time (≥ 2 h/day) (β=+0.22; p<0.02), was positively associated with waist circumference. High total screen time (>3h/day) was positively associated with waist circumference (β=+0.34; p<0.01), and body mass index (β=+0.39; p<0.01). Among girls, sedentary behavior was not associated with adiposity, but cardiorespiratory fitness (β=-0.04; p<0.02) was negatively associated with body mass index.
  
  
  CONCLUSIONS
  These findings support the evidence on the negative impact of excessive electronic media exposure and low cardiorespiratory fitness, and highlight the need for interventions and prevention strategies.
authors.affiliation: Prevention Research Center in St. Louis, George Warren Brown School of Social Work, Washington University in St. Louis, United States. Electronic address: carangopaternina@go.wustl.edu.
authors.forename: Carlos M
authors.initials: CM
authors.lastname: Arango
authors.affiliation: Prevention Research Center in St. Louis, George Warren Brown School of Social Work, Washington University in St. Louis, United States.
authors.forename: Diana C
authors.initials: DC
authors.lastname: Parra
authors.affiliation: Departamento de Medicina Preventiva y Social, Pontificia Universidad Javeriana, Colombia.
authors.forename: Luis F
authors.initials: LF
authors.lastname: Gómez
authors.affiliation: Departamento de Cultura Física, Universidad de Córdoba, Colombia.
authors.forename: Lucía
authors.initials: L
authors.lastname: Lema
authors.affiliation: Global Health Promotion Office, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, United States.
authors.forename: Felipe
authors.initials: F
authors.lastname: Lobelo
authors.affiliation: Department of Sport Medicine, Norway; MRC Epidemiology Unit, Institute of Metabolic Sciences, UK.
authors.forename: Ulf
authors.initials: U
authors.lastname: Ekelund
mesh_terms: D050154:Adiposity; D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D003105:Colombia; D003201:Computers / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D010809:Physical Fitness; D057185:Sedentary Behavior; D013690:Television / Q000706:statistics & numerical data*; D013997:Time Factors; D018910:Video Games / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: Abdominal fat; Adolescent; Developing countries; Physical fitness; Sedentary lifestyle