title: Longer weekly sleep duration predicts greater 3-month BMI reduction among obese adolescents attending a clinical multidisciplinary weight management program.
abstract: OBJECTIVE
  To determine whether baseline levels of self-reported sleep and sleep problems among obese adolescents referred to an outpatient multidisciplinary family-based weight management program predict reduction in BMI 3 months later.
  
  
  METHODS
  A retrospective medical chart review was conducted for 83 obese adolescents. The following baseline variables were extracted: self-reported sleep duration (weekdays and weekends), and presence of snoring, daytime fatigue, suspected sleep apnea, and physician-diagnosed sleep apnea. Anthropometric data at baseline and 3 months were also collected.
  
  
  RESULTS
  On average, adolescents reported significantly less sleeping on weeknights (7.7 ± 1.3 h) compared to weekend nights (10.0 ± 1.8 h), t(82) = 10.5, p = 0.0001. Reduction in BMI after 3 months of treatment was predicted by more weekly sleep at baseline (R² = 0.113, F(1, 80) = 10.2, p = 0.002). Adolescents who reduced their BMI by ≥1 kg/m² reported greater weekly sleep at baseline compared to adolescents who experienced <1 kg/m² reduction (60.7 ± 7.5 h vs. 56.4 ± 8.6 h; F(1, 80) = 5.7, p = 0.02).
  
  
  CONCLUSIONS
  Findings from this study, though correlational, raise the possibility that increased duration of sleep may be associated with weight loss among obese adolescents enrolled in a weight management program. Evidence-based behavioral techniques to improve sleep hygiene and increase sleep duration should be explored in pediatric weight management settings.
authors.affiliation: Pediatric Comprehensive Weight Management Center, Department of Pediatrics and Communicable Diseases, Division of Child Behavioral Health, University of Michigan, Ann Arbor, MI, USA. bsalline@med.umich.edu
authors.forename: Bethany J
authors.initials: BJ
authors.lastname: Sallinen
authors.forename: Fauziya
authors.initials: F
authors.lastname: Hassan
authors.forename: Amy
authors.initials: A
authors.lastname: Olszewski
authors.forename: Angela
authors.initials: A
authors.lastname: Maupin
authors.forename: Timothy F
authors.initials: TF
authors.lastname: Hoban
authors.forename: Ronald D
authors.initials: RD
authors.lastname: Chervin
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Woolford
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D005221:Fatigue; D005260:Female; D006801:Humans; D008297:Male; D063766:Pediatric Obesity / Q000628:therapy*; D012189:Retrospective Studies; D057566:Self Report; D012890:Sleep; D012891:Sleep Apnea Syndromes; D012913:Snoring; D016896:Treatment Outcome; D015431:Weight Loss; D061217:Weight Reduction Programs