title: BODY COMPOSITION CHANGES DURING A MULTIDISCIPLINARY TREATMENT PROGRAMME IN OVERWEIGHT ADOLESCENTS: EVASYON STUDY.
abstract: BACKGROUND
  the main objectives of weight-loss interventions are to decrease fat mass while maintaining fatfree mass.
  
  
  OBJECTIVE
  our aim was to address effectiveness body composition changes in overweight adolescents assessed by different body composition methods following an obesity intervention programme.
  
  
  METHODS
  the life-style intervention was multi-disciplinary, with 13 months follow-up. Participants were 13-to-16 year-old overweight, or obese, Spanish adolescents. The adolescents (n = 156; 54.8% females) had body composition measured with anthropometry, dual-energy X-ray absorptiometry and air-displacement plethysmography. All measurements were made at baseline, and after 2- and 13-months. Repeated measures analysis of covariance to compare mean anthropometric changes over time and the Bonferroni correction were applied. Imputation of anthropometric measures was performed.
  
  
  RESULTS
  a high significant decrease in fat mass index was achieved in males after 2-and 13-months of intervention as measured by anthropometry (1.16 and 1.56 kg / m2, respectively), X-ray absorptiometry (1.51 and 1.91 kg / m2) and plethysmography (2.13 and 2.44 kg/m2). Moreover, a short and long-term maintenance of fat-and fat-free mass index was observed by X-ray absorptiometry in females (0.94 and 0.68 kg/m2).
  
  
  CONCLUSIONS
  our multidisciplinary approach to lifestyle intervention has a favourable impact on body fat mass and fat-free mass index as well as waist-to-height ratio, over 13 months intervention in overweight and obese adolescents.
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, University of Zaragoza, Zaragoza. Department of Paediatrics, Faculty of Medicine, University of Zaragoza, Zaragoza.. pilardm@unizar.es.
authors.forename: Pilar
authors.initials: P
authors.lastname: De Miguel-Etayo
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, University of Zaragoza, Zaragoza. Department of Psychiatry and Nursing, Faculty of Health Sciences, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA.. lmoreno@unizar.es.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Moreno
authors.affiliation: Department of Preventive Medicine and Public Health, University of Zaragoza, Zaragoza.. jsantabarbara@unizar.es.
authors.forename: Javier
authors.initials: J
authors.lastname: Santabárbara
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, University of Zaragoza, Zaragoza. Department of Paediatrics, Faculty of Medicine, University of Zaragoza, Zaragoza.. gbuenoloz@yahoo.es.
authors.forename: Gloria
authors.initials: G
authors.lastname: Bueno
authors.affiliation: Department of Physical Education and Sport. School of Sport Sciences. University of Granada, Granada. PROFITH (PROmoting FITness and Health through physical activity) Research Group, University of Granada, Granada.. miguelaujar@ugr.es.
authors.forename: Miguel
authors.initials: M
authors.lastname: Martín-Matillas
authors.affiliation: Immunonutrition Research Group. Dep. Metabolism and Nutrition. Institute of Food Science and Technology and Nutrition (ICTAN), Madrid.. bzapatera@ictan.csic.es.
authors.forename: Belén
authors.initials: B
authors.lastname: Zapatera
authors.affiliation: Paediatric Endocrinology Unit, Department of Pediatrics. Clínica Universidad de Navarra, Pamplona, Navarra. Instituto de Investigación Sanitaria de Navarra, Pamplona.. cjulian@unav.es.
authors.forename: Cristina
authors.initials: C
authors.lastname: Azcona-San Julián
authors.affiliation: Instituto de Investigación Sanitaria de Navarra, Pamplona. Department of Food Sciences, Nutrition and Physiology. University of Navarra, Pamplona, Navarra. CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid.. amarti@unav.es.
authors.forename: Amelia
authors.initials: A
authors.lastname: Marti
authors.affiliation: Department of Paediatrics. School of Sport Sciences. University of Granada, Granada. EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, Health Sciences Technological Park, University of Granada, Granada, Spain.. ccampoy@ugr.es.
authors.forename: Cristina
authors.initials: C
authors.lastname: Campoy
authors.affiliation: Immunonutrition Research Group. Dep. Metabolism and Nutrition. Institute of Food Science and Technology and Nutrition (ICTAN), Madrid.. amarcos@ictan.csic.es.
authors.forename: Ascensión
authors.initials: A
authors.lastname: Marcos
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, University of Zaragoza, Zaragoza. Department of Paediatrics, Faculty of Medicine, University of Zaragoza, Zaragoza.. jesus_maria@garagorri.e.telefonica.net.
authors.forename: Jesús M
authors.initials: JM
authors.lastname: Garagorri
mesh_terms: D015502:Absorptiometry, Photon; D000293:Adolescent; D001823:Body Composition; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008019:Life Style; D008297:Male; D050177:Overweight / Q000378:metabolism* / Q000628:therapy*; D010348:Patient Care Team; D012727:Sex Characteristics