Impact of a Combined Resistance and Aerobic Exercise Program on Motivational Variables in Breast Cancer Survivors: A Randomized Controlled Trial
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Short term exercise interventions have been shown to be beneficial for breast cancer survivors soon after treatments but longer term adherence is needed.
To examine the effects of a supervised exercise program on motivational variables in breast cancer survivors using Self-Determination Theory (SDT).
Sixty breast cancer survivors were randomized in a cross-over design to either an immediate exercise group (IEG; n = 30) that exercised from baseline to week 12 or a delayed exercise group (DEG; n = 30) that exercised from week 12 to 24. SDT variables were assessed at baseline, 6, 12, 18 and 24 weeks using the Behavioral Regulation for Exercise Questionniare-2 and the Basic Psychological Needs Satisfaction Scale.
Fifty-eight participants completed the follow-up assessments and achieved a 61.3% adherence rate. Analyses of variance revealed significant time by group interactions for almost all psychological needs and motivations that favored the exercise intervention time periods. For example, autonomy increased in the IEG from baseline to 12 weeks by 2.0 points compared to the DEG where scores decreased by 0.1 points (mean group difference = 2.0, p < 0.001). The cross-over results further supported the main findings.
Supervised exercise soon after breast cancer treatments may help to develop a positive exercise motivational profile among breast cancer survivors that could portend longer term adherence.
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- Impact of a Combined Resistance and Aerobic Exercise Program on Motivational Variables in Breast Cancer Survivors: A Randomized Controlled Trial
Annals of Behavioral Medicine
Volume 36, Issue 2 , pp 158-166
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Breast cancer
- Self-Determination Theory
- Quality of life
- Randomized controlled trial
- Industry Sectors
- Author Affiliations
- 1. School of Sport Science, Exercise and Health, M408, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- 2. Faculty of Physical Education and Recreation, University of Alberta, 114 St-89 Ave, Edmonton, Alberta, T6G 2H9, Canada