title: Long-term follow-up of physical activity behavior in older adults.
abstract: OBJECTIVE
  To examine the contribution of social-cognitive factors (self-efficacy and affect) in predicting long-term physical activity in a sample of older adults (N=174).
  
  
  METHODS
  A prospective design assessed physical activity and psychosocial variables at 2 and 5 years following a 6-month randomized, controlled exercise trial.
  
  
  METHODS
  The primary outcome variable was self-reported physical activity, with previous behavior, self-efficacy, and affect assessed as determinants of physical activity.
  
  
  RESULTS
  Covariance modeling analyses indicated that physical activity at Year 2 was the strongest predictor of physical activity at 5-year follow-up. Both self-efficacy and affect at Year 2 were also associated with physical activity at Year 5, as was original treatment condition. Variables accounted for 35% of the variance in Year 5 activity.
  
  
  CONCLUSIONS
  Older adults with higher levels of physical activity, more positive affect, and higher self-efficacy at Year 2 were more likely to continue to be active at Year 5. This study is one of the longest follow-ups of exercise behavior in older adults and has implications for structuring environments to maximize the maintenance of physical activity.
authors.affiliation: Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. emcauley@uiuc.edu
authors.forename: Edward
authors.initials: E
authors.lastname: McAuley
authors.forename: Katherine S
authors.initials: KS
authors.lastname: Morris
authors.forename: Robert W
authors.initials: RW
authors.lastname: Motl
authors.forename: Liang
authors.initials: L
authors.lastname: Hu
authors.forename: James F
authors.initials: JF
authors.lastname: Konopack
authors.forename: Steriani
authors.initials: S
authors.lastname: Elavsky
mesh_terms: D000368:Aged; D015444:Exercise; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D020377:Self Efficacy; D011795:Surveys and Questionnaires