title: Predictors of follow-up exercise behavior 6 months after a randomized trial of supervised exercise training in lymphoma patients.
abstract: OBJECTIVE
  Supervised exercise is beneficial for lymphoma patients, but it needs to be maintained to optimize long-term benefits. Here, we report the predictors of follow-up exercise behavior 6 months after a randomized controlled trial in lymphoma patients.
  
  
  METHODS
  Lymphoma patients were randomly assigned to 12 weeks of supervised aerobic exercise (n = 60) or usual care (n = 62). At baseline and post-intervention, data were collected on demographic, medical, health-related fitness, quality of life, and motivational variables. At 6-month follow-up, participants were mailed a questionnaire that assessed exercise behavior and were categorized as meeting or not meeting public health exercise guidelines.
  
  
  RESULTS
  At 6-month follow-up, 110 participants (90.2%) responded, of which 61 (55.5%) were meeting public health exercise guidelines. In univariate analyses, 16 variables predicted 6-month follow-up exercise behavior. In a stepwise regression analysis, five variables entered the model and explained 38% (p < 0.001) of the variance including the following: accepting a post-intervention exercise prescription (β = 0.33; p < 0.001), achieving a higher peak power output at post-intervention (β = 0.28; p = 0.001), experiencing a larger positive change in perceived behavioral control (β = 0.18; p = 0.028), having Hodgkin lymphoma (β = 0.19; p = 0.025), and having a stronger post-intervention intention (β = 0.18; p = 0.034).
  
  
  CONCLUSIONS
  Exercise behavior in lymphoma patients 6 months after a randomized trial was predicted by a wide range of demographic, medical, health-related fitness, quality of life, and motivational variables. These findings may help facilitate the uptake of self-directed exercise after short-term supervised exercise in lymphoma patients.
authors.affiliation: University of Alberta, Edmonton, Alberta, Canada. kerry.courneya@ualberta.ca
authors.forename: Kerry S
authors.initials: KS
authors.lastname: Courneya
authors.forename: Clare
authors.initials: C
authors.lastname: Stevinson
authors.forename: Margaret L
authors.initials: ML
authors.lastname: McNeely
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Sellar
authors.forename: Christine M
authors.initials: CM
authors.lastname: Friedenreich
authors.forename: Carolyn J
authors.initials: CJ
authors.lastname: Peddle-McIntyre
authors.forename: Neil
authors.initials: N
authors.lastname: Chua
authors.forename: Tony
authors.initials: T
authors.lastname: Reiman
mesh_terms: D000328:Adult; D000368:Aged; D005081:Exercise Therapy / Q000523:psychology; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006801:Humans; D008223:Lymphoma / Q000523:psychology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D009042:Motivation; D010349:Patient Compliance; D011237:Predictive Value of Tests; D011788:Quality of Life; D012044:Regression Analysis; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult