title: Effectiveness of a web-based physical activity intervention for adults with Type 2 diabetes-a randomised controlled trial.
abstract: OBJECTIVE
  This study examined the effectiveness of a fully automated web-based programme to increase physical activity in adults with Type 2 diabetes.
  
  
  METHODS
  Between May and July 2010, participants were randomly allocated into either a 12-week intervention (n=195) or a control (n=202) group. Participants were adults diagnosed with Type 2 diabetes, residing in Australia. Participants were assessed at baseline, 12 and 36weeks. The primary physical activity outcome was self-reported minutes of total physical activity. Secondary physical activity outcomes included minutes spent walking, and engaged in moderate, and vigorous physical activity. Additional measures included website satisfaction and website usage. The intervention consisted of a 12-week web-based physical activity intervention developed based on the Theory of Planned Behavior and self-management framework. Data were analysed from 2011 to 2012.
  
  
  RESULTS
  There was a significant group-by-time interaction (X(2) (df=1)=6.37, p<.05) for total physical activity favouring the intervention group d=0.11, for those who completed the intervention, however this was not significant in the intention-to-treat analysis d=0.01. The intervention yielded high website satisfaction and usage.
  
  
  CONCLUSIONS
  In general, there is some evidence for the effectiveness of web-based interventions for improving physical activity levels; however it is clear that maintaining improvements remains an issue.
authors.affiliation: CQUniversity Australia, Institute for Health and Social Science Research, Centre for Physical Activity Studies, Rockhampton, Queensland, Australia; Faculty of Physical Education and Recreation, University of Alberta, Edmonton, Alberta, Canada. Electronic address: cally1@ualberta.ca.
authors.forename: Cally A
authors.initials: CA
authors.lastname: Jennings
authors.affiliation: CQUniversity Australia, Institute for Health and Social Science Research, Centre for Physical Activity Studies, Rockhampton, Queensland, Australia.
authors.forename: Corneel
authors.initials: C
authors.lastname: Vandelanotte
authors.affiliation: Faculty of Health and Social Development, University of British Columbia, Kelowna, British Columbia, Canada.
authors.forename: Cristina M
authors.initials: CM
authors.lastname: Caperchione
authors.affiliation: Faculty of Physical Education and Recreation, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: W Kerry
authors.initials: WK
authors.lastname: Mummery
mesh_terms: D015992:Body Mass Index; D016009:Chi-Square Distribution; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis / Q000517:prevention & control*; D015444:Exercise / Q000523:psychology*; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D020407:Internet / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D017060:Patient Satisfaction / Q000706:statistics & numerical data; D015397:Program Evaluation; D011793:Queensland; D012648:Self Care / Q000379:methods / Q000523:psychology; D057566:Self Report; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013997:Time Factors; D016896:Treatment Outcome
keywords: Internet; Intervention; Physical activity; Randomised controlled trial; Type 2 diabetes; Web-based