title: Motivational interviewing targeting diet and physical activity improves adherence to paediatric obesity treatment: results from the MI Values randomized controlled trial.
abstract: BACKGROUND
  Adherence is a challenge in obesity treatment. Motivational interviewing (MI) may promote patient adherence. MI Values is a randomized controlled trial of MI implemented as an adjunct to an adolescent obesity treatment [Teaching Encouragement Exercise Nutrition Support (T.E.E.N.S.)].
  
  
  OBJECTIVE
  Assess effects of MI Values on T.E.E.N.S. attrition and adherence.
  
  
  METHODS
  Participants were randomized to MI (n = 58) or control (n = 41). At weeks 1 and 10, MI participants had brief MI sessions; controls viewed health education videos. All participants continued with T.E.E.N.S. (biweekly dietitian and behavioural support visits; 3 times per week supervised physical activity). Assessments were repeated at baseline, 3 and 6 months. T-tests and chi-square analyses examined T.E.E.N.S. attrition and adherence by group.
  
  
  RESULTS
  Adolescents (N = 99) were primarily African-American (73%) females (74%); age = 13.8 ± 1.8 years, body mass index percentile = 98.0 ± 1.2. Compared with controls, MI participants had greater 3-month adherence overall (89.2% vs. 81.0%, P = 0.040), and to dietitian (91.3% vs. 84.0%; P = 0.046) and behavioural support (92.9% vs. 85.2%; P = 0.041) visits, and greater 6-month adherence overall (84.4% vs. 76.2%, P = 0.026) and to behavioural support visits (87.5% vs. 78.8%, P = 0.011).
  
  
  CONCLUSIONS
  MI enhanced adherence to this obesity intervention. MI Values is the first study to examine the impact of MI on treatment adherence among obese, primarily African-American adolescents.
authors.affiliation: Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, Virginia, USA; Department of Psychology, Virginia Commonwealth University, Richmond, Virginia, USA.
authors.forename: M K
authors.initials: MK
authors.lastname: Bean
authors.forename: P
authors.initials: P
authors.lastname: Powell
authors.forename: A
authors.initials: A
authors.lastname: Quinoy
authors.forename: K
authors.initials: K
authors.lastname: Ingersoll
authors.forename: E P
authors.initials: EP
authors.lastname: Wickham
authors.forename: S E
authors.initials: SE
authors.lastname: Mazzeo
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D015992:Body Mass Index; D015444:Exercise / Q000523:psychology*; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D006266:Health Education; D007722:Health Knowledge, Attitudes, Practice; D006293:Health Promotion; D006801:Humans; D008297:Male; D062405:Motivational Interviewing; D010349:Patient Compliance / Q000523:psychology* / Q000706:statistics & numerical data; D063766:Pediatric Obesity / Q000517:prevention & control / Q000523:psychology*; D015431:Weight Loss
keywords: Motivational interviewing; paediatric obesity; treatment adherence
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