title: A pilot study on the motivational effects of an internet-delivered physical activity behaviour change programme in Nova Scotian cancer survivors.
abstract: To examine the effects of an internet-delivered, distance-based physical activity (PA) behaviour change programme on motivation to perform PA in cancer survivors.
  
  
  
  Breast, prostate and colorectal cancer survivors (N = 95) were randomized to either an online Theory of Planned Behaviour (TPB)-based PA behaviour change programme (UCAN) or usual care.
  
  
  
  Motivational variables from the TPB including intention, planning, attitude, subjective norm, perceived behavioural control and underlying beliefs.
  
  
  
  UCAN had significant negative effects on self-efficacy (-.7; 95% CI = -1.2 to -.1; d = -.53, p = .019), affective attitude (-.4; 95% CI = -.8 to -.0; d = -.45, p = .044), instrumental attitude (-.5; 95% CI = -.9 to -.1; d = -.43, p = .026) and confidence to perform PA in bad weather (-.8; 95% CI = -1.6 to -.1; d = -.49, p = .030), despite health issues (-.7; 95% CI = -1.3 to -.1; d = -.48, p = .031), despite pain/soreness (-.7; 95% CI = -1.4 to -.1; d = -.52, p = .020), despite family responsibilities (-1.0; 95% CI = -1.7 to -.3; d = -.62, p = .005) and when PA is boring (-.8; 95% CI = -1.4 to -.1; d = -.54, p = .016).
  
  
  
  UCAN had negative effects on motivational variables in cancer survivors. These findings may be explained by methodological issues related to measuring motivation and/or the absence of post-intentional constructs.
authors.affiliation: a Faculty of Physical Education and Recreation , University of Alberta , Edmonton , Canada.
authors.forename: Cynthia C
authors.initials: CC
authors.lastname: Forbes
authors.affiliation: b Faculty of Medicine , Dalhousie University , Halifax , Canada.
authors.forename: Chris M
authors.initials: CM
authors.lastname: Blanchard
authors.affiliation: a Faculty of Physical Education and Recreation , University of Alberta , Edmonton , Canada.
authors.forename: W Kerry
authors.initials: WK
authors.lastname: Mummery
authors.affiliation: a Faculty of Physical Education and Recreation , University of Alberta , Edmonton , Canada.
authors.forename: Kerry S
authors.initials: KS
authors.lastname: Courneya
mesh_terms: D000368:Aged; D001521:Behavior Therapy / Q000379:methods*; D001943:Breast Neoplasms / Q000628:therapy; D015179:Colorectal Neoplasms / Q000628:therapy; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D033182:Intention; D020407:Internet; D008297:Male; D008875:Middle Aged; D009042:Motivation; D009369:Neoplasms / Q000628:therapy*; D009674:Nova Scotia; D010865:Pilot Projects; D015397:Program Evaluation; D011471:Prostatic Neoplasms / Q000628:therapy; D011582:Psychological Theory; D020377:Self Efficacy; D017741:Survivors / Q000523:psychology* / Q000706:statistics & numerical data; D013813:Therapy, Computer-Assisted; D016896:Treatment Outcome
keywords: behaviour intervention; exercise; motivation; survivorship; theory of planned behaviour