title: Short-term weight loss with diet and physical activity in young adults: The IDEA study.
abstract: OBJECTIVE
  This study examined the effect of a behavioral weight loss intervention (BWLI) on young adults (age = 18-35 years).
  
  
  METHODS
  Participants (N = 470) enrolled in a 6-month BWLI that included weekly group sessions, a prescribed energy-restricted diet, and moderate to vigorous physical activity (MVPA). Assessments included weight, body composition, fitness, lipids, glucose, insulin, resting blood pressure and heart rate, physical activity, and dietary intake. Data are presented as median [25th, 75th percentiles].
  
  
  RESULTS
  Retention was 90% (N = 424; age: 30.9 [27.8, 33.7] years; BMI: 31.2 [28.4, 34.3] kg m(-2) ). Participants completed 87.5% [76.1%, 95.5%] of scheduled intervention contacts. Weight and body fat decreased while fitness increased (P < 0.0001). MVPA in bouts ≥10 min increased (P < 0.0001), though total MVPA did not change significantly. Sedentary time decreased (P = 0.03). Energy and percent fat intake decreased, while percent carbohydrate and protein intake increased (P < 0.0001). Systolic and diastolic blood pressure, total cholesterol, LDL cholesterol, triglycerides, glucose, and insulin decreased (P < 0.0001).
  
  
  CONCLUSIONS
  A 6-month BWLI produced favorable changes in dietary intake and physical activity and elicited favorable changes in weight and other health outcomes in young adults. MVPA performed in bouts of ≥10 min was associated with greater weight loss, but sedentary behavior was not.
authors.affiliation: Department of Health and Physical Activity, Physical Activity and Weight Management Research Center, University of Pittsburgh, Pennsylvania, USA.
authors.forename: John M
authors.initials: JM
authors.lastname: Jakicic
authors.affiliation: Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania, USA.|Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Wendy C
authors.initials: WC
authors.lastname: King
authors.affiliation: Department of Psychiatry, School of Medicine, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Marsha D
authors.initials: MD
authors.lastname: Marcus
authors.affiliation: Department of Health and Physical Activity, Physical Activity and Weight Management Research Center, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Kelliann K
authors.initials: KK
authors.lastname: Davis
authors.affiliation: Department of Nutrition and Exercise Science, Bastyr University, Kenmore, Washington, USA.
authors.forename: Diane
authors.initials: D
authors.lastname: Helsel
authors.affiliation: Department of Health and Physical Activity, Physical Activity and Weight Management Research Center, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Amy D
authors.initials: AD
authors.lastname: Rickman
authors.affiliation: Department of Health and Physical Activity, Physical Activity and Weight Management Research Center, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Bethany Barone
authors.initials: BB
authors.lastname: Gibbs
authors.affiliation: Department of Health and Physical Activity, Physical Activity and Weight Management Research Center, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Renee J
authors.initials: RJ
authors.lastname: Rogers
authors.affiliation: Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Abdus
authors.initials: A
authors.lastname: Wahed
authors.affiliation: Department of Psychiatry, School of Medicine, University of Pittsburgh, Pennsylvania, USA.|Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania, USA.
authors.forename: Steven H
authors.initials: SH
authors.lastname: Belle
mesh_terms: D000293:Adolescent; D000328:Adult; D001521:Behavior Therapy; D001823:Body Composition / Q000502:physiology; D003131:Combined Modality Therapy; D004038:Diet, Reducing; D015444:Exercise / Q000502:physiology; D005081:Exercise Therapy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009765:Obesity / Q000517:prevention & control; D050177:Overweight / Q000628:therapy*; D013997:Time Factors; D015431:Weight Loss / Q000502:physiology; D055815:Young Adult