title: Efficacy of bowel cancer appeals for promoting physical activity.
abstract: OBJECTIVE
  To investigate the potential efficacy of bowel cancer prevention messages in increasing intentions to be more physically active.
  
  
  METHODS
  A convenience sample of 281 physically inactive persons aged 30-60 years was recruited in the Perth city centre and randomly assigned to a bowel cancer and physical activity message or a heart disease and physical activity message. After reading a booklet containing information about physical activity and its link either to bowel cancer (n = 141) or cardiovascular disease (n = 140), respondents filled in a self-completion questionnaire. The main response measures were impact on intentions to be more physically active, and perceived believability and relevance of the message.
  
  
  RESULTS
  Perceived believability of the message was high in both conditions. Perceived personal relevance of the message was substantially lower in the bowel cancer than the cardiovascular disease condition. Overall, the cardiovascular disease condition achieved somewhat higher behavioural intentions than the bowel cancer condition.
  
  
  CONCLUSIONS
  The finding that two in three respondents in the bowel cancer condition had increased intention to increase their level of physical activity provides support for the potential efficacy of promoting physical activity in reducing the risk of bowel cancer.
authors.affiliation: Centre for Behavioural Research in Cancer Control, Curtin University of Technology, Perth, Western Australia. g.jalleh@curtin.edu.au
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Jalleh
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Donovan
authors.forename: Terry
authors.initials: T
authors.lastname: Slevin
authors.forename: Helen
authors.initials: H
authors.lastname: Dixon
mesh_terms: D000328:Adult; D002318:Cardiovascular Diseases / Q000517:prevention & control; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D033182:Intention; D007414:Intestinal Neoplasms / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D016896:Treatment Outcome; D014904:Western Australia