title: Longitudinal Weight Loss Patterns and their Behavioral and Demographic Associations.
abstract: BACKGROUND
  Identification of weight change patterns may allow tailored interventions to improve long-term weight loss.
  
  
  OBJECTIVE
  To identify patterns of weight change over 18 months, and assess participant characteristics and intervention adherence factors associated with weight change patterns in a sample of 359 overweight/obese adults.
  
  
  METHODS
  Weight loss (0-6 months) was achieved with reduced energy intake and increased physical activity (PA). Maintenance (7-18 months) provided adequate energy to maintain weight and continued PA.
  
  
  RESULTS
  Latent profile analysis identified three weight change profiles. During weight loss/maintenance, participants in profiles 2 and 3 (18-month weight loss ∼14 %) attended more behavioral sessions and performed more PA compared with profile 1 (18-month weight loss <1 %). Self-efficacy for both weight management and exercise barriers were higher in profiles 2 and 3 compared with profile 1 following weight loss and during maintenance.
  
  
  CONCLUSIONS
  Weight change patterns can be identified and are associated with both participant characteristics and intervention adherence.
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. aszabo2@ku.edu.
authors.forename: Amanda N
authors.identifier: http://orcid.org/0000-0002-4927-1501
authors.initials: AN
authors.lastname: Szabo-Reed
authors.affiliation: Institute for Measurement, Methodology, Analysis and Policy, Texas Tech University, Box 43150, Lubbock, TX, 79409, USA. jaehoon.lee@ttu.edu.
authors.forename: Jaehoon
authors.initials: J
authors.lastname: Lee
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. lptomey@ku.edu.
authors.forename: Lauren
authors.initials: L
authors.lastname: Ptomey
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. ewillis@ku.edu.
authors.forename: Erik
authors.initials: E
authors.lastname: Willis
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. mschubert2@kumc.edu.
authors.forename: Matt
authors.initials: M
authors.lastname: Schubert
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. rwashburn@ku.edu.
authors.forename: Richard
authors.initials: R
authors.lastname: Washburn
authors.affiliation: Cardiovascular Research Institute, Division of Internal Medicine, The University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. jdonnelly@ku.edu.
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Donnelly
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015928:Cognitive Behavioral Therapy; D003131:Combined Modality Therapy; D004035:Diet Therapy; D002149:Energy Intake; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000178:diet therapy / Q000523:psychology* / Q000628:therapy*; D050177:Overweight / Q000178:diet therapy / Q000523:psychology* / Q000628:therapy*; D010349:Patient Compliance / Q000523:psychology*; D020377:Self Efficacy; D015431:Weight Loss; D055815:Young Adult
keywords: Obesity; Self-efficacy; Weight management