title: Impact of telephone reinforcement and negotiated contracts on behavioral predictors of exercise maintenance in older adults with osteoarthritis.
abstract: OBJECTIVE
  To examine the impact of telephone reinforcement (TR) on predictors of physical activity (PA) maintenance in older adults with osteoarthritis.
  
  
  METHODS
  Mixed effects modeling was conducted of data from a randomized PA trial that used negotiated maintenance contracts, supplemented by TR, to test impact of TR on barriers, decisional balance, and stage of change at multiple points in time.
  
  
  RESULTS
  Participants who were referred to a PA program and received TR improved the most in barriers and decisional balance. Participants who negotiated a tailored maintenance contract but did not receive TR improved the most in stage.
  
  
  CONCLUSIONS
  TR appears to positively affect perceptions around engagement, whereas negotiation positively impacts PA behavior. Further research should examine the effectiveness of specific PA maintenance strategies.
authors.forename: Pakaja M
authors.initials: PM
authors.lastname: Desai
authors.forename: Susan L
authors.initials: SL
authors.lastname: Hughes
authors.forename: Karen E
authors.initials: KE
authors.lastname: Peters
authors.forename: Robin J
authors.initials: RJ
authors.lastname: Mermelstein
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015444:Exercise; D005260:Female; D015438:Health Behavior; D006293:Health Promotion; D006801:Humans; D008297:Male; D008875:Middle Aged; D017008:Negotiating; D010003:Osteoarthritis / Q000628:therapy*; D020377:Self Efficacy; D013689:Telephone