title: Weight loss interventions for overweight and obese adolescents: a systematic review.
abstract: OBJECTIVE
  To determine what factors contribute to the efficacy of non-drug treatments designed to promote weight loss in overweight and obese adolescents.
  
  
  METHODS
  Data sources Medline/PubMed; Psychinfo; EMBASE; Web of Science (ISI); and Cochrane Central Register of Controlled Trials. Study selection Randomized clinical trials of treatments for obesity and overweight in adolescents aged 10-19 years with a minimum duration of 2 months. Data extraction 115 of the 12,948 publications retrieved met eligibility criteria and 26 were included in the final sample. Period of extraction January 2004 to November 2014.
  
  
  RESULTS
  The Delphi list was used to evaluate the methodological quality of the studies (M = 5.58, SD = 1.027). There was considerable variability between the interventions, but they were all multifactorial, with components such as nutritional education, physical activity, family support and psychological therapy. The number of contacts with subjects during the course of the intervention was a predictor of treatment efficacy when the groups were compared. Limitations This systematic review was limited to trials reported in English and by the lack of methodological rigor and shortcomings in reporting in the studies reviewed.
  
  
  CONCLUSIONS
  Multidisciplinary interventions including family support and guided behavior modification appear to be effective methods of reducing BMI in overweight and obese adolescents.
authors.affiliation: PUCRS, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, Prédio 11, 9° Andar, Sala 927-Partenon, Porto Alegre, RS, 90619-900, Brazil. rmboff@hotmail.com.
authors.forename: Raquel de Melo
authors.initials: RM
authors.lastname: Boff
authors.affiliation: PUCRS, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, Prédio 11, 9° Andar, Sala 927-Partenon, Porto Alegre, RS, 90619-900, Brazil.
authors.forename: Ronald Patrick Araujo
authors.initials: RPA
authors.lastname: Liboni
authors.affiliation: PUCRS, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, Prédio 11, 9° Andar, Sala 927-Partenon, Porto Alegre, RS, 90619-900, Brazil.
authors.forename: Igor Pacheco de Azevedo
authors.initials: IPA
authors.lastname: Batista
authors.affiliation: UNIVATES, Rua Avelino Tallini, 171, Lajeado, 95900-000, Rio Grande do Sul, Brazil.
authors.forename: Lauren Heineck
authors.initials: LH
authors.lastname: de Souza
authors.affiliation: PUCRS, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, Prédio 11, 9° Andar, Sala 927-Partenon, Porto Alegre, RS, 90619-900, Brazil.
authors.forename: Margareth da Silva
authors.initials: MDS
authors.lastname: Oliveira
mesh_terms: D000293:Adolescent; D001521:Behavior Therapy; D015992:Body Mass Index; D002648:Child; D006801:Humans; D062405:Motivational Interviewing; D050177:Overweight / Q000523:psychology / Q000628:therapy*; D063766:Pediatric Obesity / Q000523:psychology / Q000628:therapy*; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome; D015431:Weight Loss; D061217:Weight Reduction Programs; D055815:Young Adult
keywords: Adolescents; Controlled trial; Obesity; Overweight; Systematic review; Treatment