title: Television viewing time and risk of eating disorders in Spanish adolescents: AVENA and AFINOS studies.
abstract: BACKGROUND
  Effective preventive interventions for both eating disorders and obesity in adolescence should be focused on shared risk factors. We analyzed the association between television (TV) viewing time and the risk of eating disorders, as well as the potential role of obesity in this association.
  
  
  METHODS
  The sample consisted of a total of 3458 Spanish adolescents, aged 13-18.5 years, from the Food and Assessment of the Nutritional Status of Adolescents (AVENA) and Physical Activity as a Preventive Measure of the Development of Overweight, Obesity, Allergies, Infections, and Cardiovascular Risk Factors in Adolescents (AFINOS) studies. Adolescents' TV time was assessed by self-report. Body mass index was calculated and the adolescents were classified into non-overweight and overweight-obesity. The risk of eating disorders was evaluated using the SCOFF questionnaire.
  
  
  RESULTS
  Adolescents who watched TV >1 h/day had a higher risk for eating disorders, compared with those adolescents who watch TV <1 h/day. Also, overweight-obese adolescents had a higher risk for eating disorders than those who were non-overweight. Analyses across groups of TV viewing time and weight status showed similar trends, so that the higher the time spent in TV viewing, the higher the risk of eating disorders, regardless of weight status.
  
  
  CONCLUSIONS
  TV viewing time might be a focal point for prevention of both eating disorders and obesity in adolescence.
authors.affiliation: Department of Physical Education, Sport and Human Movement, Faculty of Education and Teaching Training, Autónoma University of Madrid.|Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition, Spanish National Research Council (CSIC).
authors.forename: David
authors.initials: D
authors.lastname: Martínez-Gómez
authors.affiliation: Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition, Spanish National Research Council (CSIC).
authors.forename: Ana M
authors.initials: AM
authors.lastname: Veses
authors.affiliation: Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition, Spanish National Research Council (CSIC).
authors.forename: Sonia
authors.initials: S
authors.lastname: Gómez-Martínez
authors.affiliation: Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition, Spanish National Research Council (CSIC).|Department Animal Physiology, Faculty of Biology, University of Murcia, Murcia.|School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK.
authors.forename: Fátima
authors.initials: F
authors.lastname: Pérez de Heredia
authors.affiliation: Department of Medical Physiology, School of Medicine, University of Granada, Granada.
authors.forename: Ruth
authors.initials: R
authors.lastname: Castillo
authors.affiliation: Growth, Exercise, Nutrition and Development (GENUD) Research Group, University of Zaragoza, Aragon.
authors.forename: Alba M
authors.initials: AM
authors.lastname: Santaliestra-Pasias
authors.affiliation: Department of Preventive Medicine and Public Health and History of Science, Faculty of Medicine, Complutense University of Madrid, Madrid.
authors.forename: Maria Elisa
authors.initials: ME
authors.lastname: Calle
authors.affiliation: Department of Pediatrics, School of Medicine, University of Cantabria, Santander, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Garcia-Fuentes
authors.affiliation: Department of Physical Education, Sport and Human Movement, Faculty of Education and Teaching Training, Autónoma University of Madrid.
authors.forename: Oscar Luis
authors.initials: OL
authors.lastname: Veiga
authors.affiliation: Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition, Spanish National Research Council (CSIC).
authors.forename: Ascensión
authors.initials: A
authors.lastname: Marcos
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D005247:Feeding Behavior / Q000523:psychology*; D001068:Feeding and Eating Disorders / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D057566:Self Report; D017678:Sex Distribution; D013030:Spain / Q000453:epidemiology; D011795:Surveys and Questionnaires; D013690:Television / Q000706:statistics & numerical data*; D013997:Time Factors
keywords: adolescent; eating disorder; obesity; television viewing