title: Effects of a DVD-Delivered Exercise Intervention on Maintenance of Physical Activity in Older Adults.
abstract: Previous research supports the efficacy of a 6-month DVD-delivered program for enhancing physical activity (PA) in older adults. In the current study, we examined the degree to which intervention-related increases in PA were maintained after a 6-month, no-contact follow-up.
  
  
  
  Follow-up assessments of PA via accelerometry and the Godin Leisure-Time Exercise Questionnaire (GLTEQ) were collected in a sample of older adults (N = 238). Repeated measures analyses of variance were conducted to examine changes in PA over the course of the follow-up period.
  
  
  
  For accelerometer measured PA, there was a significant time × treatment × age group interaction, F1,203 =11.319, P = .001, η2 = .053, such that younger (≤70 years) intervention participants maintained high levels of PA across the follow-up period, while PA in older intervention and young control participants declined significantly. Rates of PA in older control participants remained low over the course of the follow-up period. Analyses of GLTEQ scores revealed similar, though less significant patterns.
  
  
  
  DVD-based exercise programs may be effective for maintaining PA in younger members of the older adult population; however, there remains a need to develop better strategies for promoting PA maintenance in older individuals when using home-based designs.
authors.affiliation: Dept of Kinesiology and Community Health, University of Illinois at Urbana-Champaign.
authors.forename: Jason
authors.initials: J
authors.lastname: Fanning
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Awick
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Wójcicki
authors.forename: Neha
authors.initials: N
authors.lastname: Gothe
authors.forename: Sarah
authors.initials: S
authors.lastname: Roberts
authors.forename: Diane K
authors.initials: DK
authors.lastname: Ehlers
authors.forename: Robert W
authors.initials: RW
authors.lastname: Motl
authors.forename: Edward
authors.initials: E
authors.lastname: McAuley
mesh_terms: D061725:Accelerometry / Q000379:methods*; D000368:Aged; D015444:Exercise / Q000502:physiology*; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires; D014743:Videotape Recording / Q000706:statistics & numerical data*