title: Anthropometric indices to assess body-fat changes during a multidisciplinary obesity treatment in adolescents: EVASYON Study.
abstract: OBJECTIVE
  The main objectives of weight loss interventions in children and adolescents are to decrease fat mass while maintaining fat-free mass. Several methods are available to assess childhood and adolescence obesity, such as weight and height, bioelectrical impedance, skin-fold thickness measurements and other laboratory methods. The aim was to assess simple anthropometric indices as predictors of body-fat changes, using dual-energy X-ray absorptiometry measurements as reference method.
  
  
  METHODS
  Multi-intervention approach (diet, physical activity and psychological support in a family-group-based treatment) was implemented with a one-year follow-up in 13-to-16-year-old overweight or obese Spanish adolescents. A total of 83 adolescents were recruited from Granada and Zaragoza, males (n = 43) (31.6 kg/m(2)) and females (n = 40) (32.0 kg/m(2)). We measured body composition with anthropometry and dual-energy X-ray absorptiometry. All measurements were made at baseline, and after 2 and 13 months. Random coefficient regression model was used to calculate the proportion of body composition changes during follow-up that would be explained by simple body composition indices based on anthropometric measures.
  
  
  RESULTS
  After controlling for age and Tanner stage, body mass index explained 76.5% of body composition changes in males and 90.1% in females, while fat mass index (assessed by skin-folds) explained 78.9% of body composition changes in males and 84.0% of body composition changes in females.
  
  
  CONCLUSIONS
  In conclusion, we found that BMI was a good indicator of body fat composition changes in children and adolescents, although FMI assessed by anthropometry was also a good indicator.
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain; Department of Psychiatry and Nursing, Faculty of Health Sciences, C/ Domingo Miral s/n, Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Paediatrics, Faculty of Medicine, C/ Domingo Miral s/n, Universidad de Zaragoza, 50009 Zaragoza, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: De Miguel-Etayo
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain; Department of Psychiatry and Nursing, Faculty of Health Sciences, C/ Domingo Miral s/n, Universidad de Zaragoza, 50009 Zaragoza, Spain. Electronic address: lmoreno@unizar.es.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Moreno
authors.affiliation: Department of Preventive Medicine and Public Health, Universidad de Zaragoza, Pza. Universidad 3, 22002 Huesca, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Ministry of Science and Innovation, Madrid, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Santabárbara
authors.affiliation: Department of Physical Education and Sport, Faculty of Sport Sciences, Ctra. Alfacar s/n, University of Granada, 18011 Granada, Spain; PROFITH (Promoting FITness and Health through physical activity) Research Group, University of Granada, Ctra. Alfacar s/n, 18011 Granada, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Martín-Matillas
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Avda. C/ Madrid 11, University of Granada, 18012 Granada, Spain.
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Piqueras
authors.affiliation: Department of Physical Education and Sport, Faculty of Sport Sciences, Ctra. Alfacar s/n, University of Granada, 18011 Granada, Spain; Department of Pediatrics, Faculty of Medicine, Avda. C/ Madrid 11, University of Granada, 18012 Granada, Spain.
authors.forename: Dinalrilan
authors.initials: D
authors.lastname: Rocha-Silva
authors.affiliation: Department of Food Sciences, Nutrition and Physiology, C/ Irunlarrrea 1, Universidad of Navarra, 31008 Pamplona, Navarra, Spain.
authors.forename: Amelia
authors.initials: A
authors.lastname: Marti Del Moral
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Avda. C/ Madrid 11, University of Granada, 18012 Granada, Spain; EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, Health Sciences Technological Park, Ctra. Alfacar s/n, University of Granada, 18011 Granada, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Campoy
authors.affiliation: Immunonutrition Research Group, Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), C/ José Antonio Novais, 10, 28040 Madrid, Spain.
authors.forename: Ascensión
authors.initials: A
authors.lastname: Marcos
authors.affiliation: GENUD (Growth, Exercise, NUtrition and Development) Research Group, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain; Department of Paediatrics, Faculty of Medicine, C/ Domingo Miral s/n, Universidad de Zaragoza, 50009 Zaragoza, Spain.
authors.forename: Jesús M
authors.initials: JM
authors.lastname: Garagorri
mesh_terms: D015502:Absorptiometry, Photon; D000273:Adipose Tissue; D050154:Adiposity; D000293:Adolescent; D015992:Body Mass Index; D001835:Body Weight; D017097:Electric Impedance; D005247:Feeding Behavior; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009043:Motor Activity; D009765:Obesity / Q000628:therapy*; D050177:Overweight / Q000628:therapy; D012885:Skinfold Thickness; D013030:Spain; D061217:Weight Reduction Programs
keywords: Body composition; Body mass index; Dual X-ray absorptiometry; Fat mass index; Fat mass loss programme; Multi-intervention approach