title: Effects of exercise adherence on physical function among overweight older adults with knee osteoarthritis.
abstract: OBJECTIVE
  To determine whether high exercise adherence improved physical function among older adults with knee osteoarthritis (OA) who were overweight or obese.
  
  
  METHODS
  Associations between exercise adherence, changes in 6-minute walking distance in meters, and self-reported disability (Western Ontario and McMaster Universities Osteoarthritis Index function subscale) after 6 and 18 months were examined among an Arthritis, Diet, and Activity Promotion Trial subsample (n = 134) using multiple linear regression models.
  
  
  RESULTS
  Higher exercise adherence was associated with greater improvements in 6-minute walking distance after 6 and 18 months and in disability after 6 months. Pain and body mass index (BMI) contributed, to some extent, to explaining the link between exercise adherence and changes in physical performance and self-reported disability.
  
  
  CONCLUSIONS
  Higher exercise adherence is associated with improved physical function in overweight and obese older adults with knee OA. This indicates that promoting adherence is clinically relevant when prescribing exercise regimens that also focus on decreasing pain and BMI.
authors.affiliation: Universiteit Maastricht, Maastricht, The Netherlands. Coen.vanGool@ZW.unimaas.nl
authors.forename: Coen H
authors.initials: CH
authors.lastname: van Gool
authors.forename: Brenda W J H
authors.initials: BW
authors.lastname: Penninx
authors.forename: Gertrudis I J M
authors.initials: GI
authors.lastname: Kempen
authors.forename: W Jack
authors.initials: WJ
authors.lastname: Rejeski
authors.forename: Gary D
authors.initials: GD
authors.lastname: Miller
authors.forename: Jacques Th M
authors.initials: JT
authors.lastname: van Eijk
authors.forename: Marco
authors.initials: M
authors.lastname: Pahor
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Messier
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D015992:Body Mass Index; D004185:Disability Evaluation; D015444:Exercise; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D009043:Motor Activity; D009765:Obesity / Q000523:psychology / Q000534:rehabilitation*; D020370:Osteoarthritis, Knee / Q000523:psychology / Q000534:rehabilitation*; D010349:Patient Compliance; D012919:Social Behavior