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The HEART mobile phone trial: the partial mediating effects of self-efficacy on physical activity among cardiac patients

Maddison, Ralph, Pfaeffli, Leila, Stewart, Ralph, Kerr, Andrew, Jiang, Yannan, Rawstorn, Jonathan, Carter, Karen and Whittaker, Robyn 2014, The HEART mobile phone trial: the partial mediating effects of self-efficacy on physical activity among cardiac patients, Frontiers in public health, vol. 2, pp. 1-4, doi: 10.3389/fpubh.2014.00056.

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Title The HEART mobile phone trial: the partial mediating effects of self-efficacy on physical activity among cardiac patients
Author(s) Maddison, Ralph
Pfaeffli, Leila
Stewart, Ralph
Kerr, Andrew
Jiang, Yannan
Rawstorn, Jonathan
Carter, Karen
Whittaker, Robyn
Journal name Frontiers in public health
Volume number 2
Start page 1
End page 4
Total pages 4
Publisher Frontiers Research Foundation
Place of publication Lausanne, Switzerland
Publication date 2014-05
ISSN 2296-2565
Keyword(s) behavior
exercise
mobile phones
self-efficacy
Summary BACKGROUND: The ubiquitous use of mobile phones provides an ideal opportunity to deliver interventions to increase physical activity levels. Understanding potential mediators of such interventions is needed to increase their effectiveness. A recent randomized controlled trial of a mobile phone and Internet (mHealth) intervention was conducted in New Zealand to determine the effectiveness on exercise capacity and physical activity levels in addition to current cardiac rehabilitation (CR) services for people (n = 171) with ischemic heart disease. Significant intervention effect was observed for self-reported leisure-time physical activity and walking, but not peak oxygen uptake at 24 weeks. There was also significant improvement in self-efficacy.

OBJECTIVE: To evaluate the mediating effect of self-efficacy on physical activity levels in an mHealth delivered exercise CR program.

METHODS: Treatment evaluations were performed on the principle of intention to treat. Adjusted regression analyses were conducted to evaluate the main treatment effect on leisure-time physical activity and walking at 24 weeks, with and without change in self-efficacy as the mediator of interest.

RESULTS: Change in self-efficacy at 24 weeks significantly mediated the treatment effect on leisure-time physical activity by 13%, but only partially mediated the effect on walking by 4% at 24 weeks.

CONCLUSION: An mHealth intervention involving text messaging and Internet support had a positive treatment effect on leisure-time physical activity and walking at 24 weeks, and this effect was likely mediated through changes in self-efficacy. Future trials should examine other potential mediators related to this type of intervention.
Language eng
DOI 10.3389/fpubh.2014.00056
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30081554

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.