title: Relationship of sleep quality, baseline weight status, and weight-loss responsiveness in obese adolescents in an immersion treatment program.
abstract: OBJECTIVE
  The objective of this study was to investigate the effect of baseline sleep on baseline weight status and weight-loss responsiveness in obese adolescents.
  
  
  METHODS
  Twenty-five obese adolescents who participated in a 19-day summer camp-based immersion treatment (IT) program completed pre-intervention measures of sleep duration and quality, and pre- and post-intervention body mass index z-scores (zBMI) and waist circumference (WC) assessments. Objective measures of sleep were obtained by actigraphy for a random subset of six participants for 1 week pre- and post-intervention.
  
  
  RESULTS
  Shorter weekday sleep durations and more sleep debt were related to higher pre-intervention WCs (r = -0.54, p = 0.01 and r = -0.56, p = 0.01), and lower subjective sleep quality was related to higher pre-intervention zBMIs (r = -0.49, p = 0.02). Longer weekend sleep durations and more sleep debt were related to smaller reductions in pre- to post-intervention zBMIs (r = -0.47, p = 0.04 and r = -0.51, p = 0.03). For the subgroup of adolescents who wore actigraphs pre- and post-intervention, an increase in their sleep durations (d = -0.25) and a reduction in their sleep latencies (d = 0.52), zBMIs (d = 0.31), and WCs (d = 0.20) were observed.
  
  
  CONCLUSIONS
  These results provide further evidence linking poor sleep patterns and obesity in adolescence, and suggest that sleep patterns may impact the effectiveness of pediatric obesity interventions and that IT programs may improve sleep in obese adolescents. Overall, they provide support for addressing sleep problems as part of obesity interventions.
authors.affiliation: Department of Psychology, East Carolina University, Greenville, NC 27858, United States. Electronic address: valriec@ecu.edu.
authors.forename: Cecelia R
authors.initials: CR
authors.lastname: Valrie
authors.affiliation: Department of Psychology, East Carolina University, Greenville, NC 27858, United States.
authors.forename: Kayzandra
authors.initials: K
authors.lastname: Bond
authors.affiliation: Department of Psychology, East Carolina University, Greenville, NC 27858, United States.
authors.forename: Lesley D
authors.initials: LD
authors.lastname: Lutes
authors.affiliation: Department of Psychology, East Carolina University, Greenville, NC 27858, United States.
authors.forename: Marissa
authors.initials: M
authors.lastname: Carraway
authors.affiliation: Department of Pediatrics, Brody School of Medicine, East Carolina University, Greenville, NC 27834, United States.
authors.forename: David N
authors.initials: DN
authors.lastname: Collier
mesh_terms: D056044:Actigraphy; D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D005260:Female; D006801:Humans; D008019:Life Style; D008297:Male; D063766:Pediatric Obesity / Q000150:complications / Q000628:therapy*; D010865:Pilot Projects; D012307:Risk Factors; D012893:Sleep Wake Disorders / Q000150:complications*; D016896:Treatment Outcome; D055105:Waist Circumference; D015431:Weight Loss; D061217:Weight Reduction Programs
keywords: Adolescents; Immersion treatment; Intervention; Obesity; Pediatrics; Sleep