title: The effect of a multifaceted efficacy intervention on exercise behavior in relatives of colon cancer patients.
abstract: BACKGROUND
  Regular physical activity (PA) provides health benefits; however, at least 60% of the population fails to engage in the recommended amount of PA required to produce these health benefits.
  
  
  OBJECTIVE
  The primary purpose of the study was to examine over a 12-week structured exercise program the effect of a multifaceted efficacy intervention (MEI-i.e., task and specific types of self-regulatory efficacy) on objectively measured exercise behavior. Secondary purposes were to examine the effect of the MEI on both task and self-regulatory efficacy levels; and to determine whether efficacy beliefs could predict exercise behavior.
  
  
  METHODS
  Relatives of colon cancer patients (N = 140) were enrolled in an exercise program, and were randomized to either a MEI or attention control condition, and took part in classroom sessions. Behavior was assessed throughout the 12-week program using objective measures of frequency, duration, and intensity of exercise, and dropout rates, while self-reported task, barrier, scheduling, goal-setting, and relapse prevention efficacy were assessed at baseline and weeks 4, 8, and 12.
  
  
  RESULTS
  The MEI group exercised for longer duration in the early phase of the program (i.e., 0-4 weeks); however, no significant differences were noted for exercise frequency and intensity. Differential dropout was found favoring the MEI group at weeks 8 and 12. No treatment condition differences were found for reported efficacy beliefs. Proceeding self-efficacious beliefs were associated with objective measures of behavior.
  
  
  CONCLUSIONS
  A MEI grounded in Social Cognitive Theory was partially effective in influencing colon cancer relatives' exercise behavior.
authors: The University of Alberta, Edmonton, AB, Canada. emcgowan@ualberta.ca
authors: Erin L
authors: EL
authors: McGowan
authors: Harry
authors: H
authors: Prapavessis
authors: Nerissa
authors: N
authors: Campbell
authors: Casey
authors: C
authors: Gray
authors: Joy
authors: J
authors: Elkayam
mesh_terms: D000328:Adult; D000368:Aged; D001288:Attention; D003110:Colonic Neoplasms; D003469:Culture; D015444:Exercise / Q000523:psychology*; D005190:Family / Q000523:psychology*; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D020377:Self Efficacy; D057566:Self Report; D016896:Treatment Outcome