Correlates of physical activity in a population-based sample of kidney cancer survivors: an application of the theory of planned behavior

dc.contributor.authorTrinh, Linda
dc.contributor.authorPlotnikoff, Ronald C
dc.contributor.authorRhodes, Ryan E.
dc.contributor.authorNorth, Scott
dc.contributor.authorCourneya, Kerry S
dc.date.accessioned2014-05-16T19:33:19Z
dc.date.available2014-05-16T19:33:19Z
dc.date.copyright2012en_US
dc.date.issued2012-08-06
dc.descriptionBioMed Centralen_US
dc.description.abstractBackground: Over half of kidney cancer survivors (KCS) are completely inactive and only a quarter are meeting physical activity (PA) guidelines. This highlights the need to identify and understand the determinants of PA in this understudied population. The purpose of this study is to determine the social cognitive correlates of PA intention and behavior in KCS using the Theory of Planned Behavior (TPB). Methods: All 1,985 KCS diagnosed between 1996 and 2010 in Alberta, Canada were mailed a self-report survey that consisted of the Godin Leisure Time Exercise Questionnaire and standard TPB items for intention, planning, perceived behavioral control (PBC), affective and instrumental attitudes, and descriptive and injunctive norms. Standard demographic and medical variables were also collected. Results: Completed surveys were received from 703 of 1,654 (43%) eligible KCS. The TPB was tested using structural equation modelling and demonstrated an adequate-to-good fit to the data [χ² = 256.88, p < .001; TLI = 0.97; CFI = 0.98; RMSEA = 0.06, 90% CI = 0.05-0.06]. There were significant pathways to PA from PBC (ß = 0.18, p = 0.02), planning (ß = 0.22, p < 0.01), and intention (ß = 0.31, p < 0.01); and to planning from intention (ß = 0.81, p < 0.01). In addition, there were significant model pathways to intention from instrumental attitude (ß = 0.28, p = 0.03), descriptive norm (ß = 0.09, p = 0.01), and PBC (ß = 0.52, p < 0.01). Overall, the TPB accounted for 69%, 63%, and 42% of the variance in intention, planning and PA, respectively. Conclusion: The TPB appears to be a useful model for explaining PA in KCS. All TPB constructs except injunctive norm and affective attitude were useful for explaining intention with PBC emerging as the largest correlate. Developing PA interventions based on the TPB may be effective in promoting PA in KCS and may lead to important improvements in health. Keywords: Exercise, Motivation, Social cognitive models, Correlatesen_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.identifier.citationTrinh et al.: Correlates of physical activity in a population-based sample of kidney cancer survivors: an application of the theory of planned behavior. International Journal of Behavioral Nutrition and Physical Activity 2012 9:96.en_US
dc.identifier.urihttp://www.ijbnpa.org/content/9/1/96
dc.identifier.urihttp://dx.doi.org/10.1186/1479-5868-9-96
dc.identifier.urihttp://hdl.handle.net/1828/5409
dc.language.isoenen_US
dc.publisherBioMed Centralen_US
dc.subjectExerciseen_US
dc.subjectMotivationen_US
dc.subjectSocial cognitive modelsen_US
dc.subjectCorrelatesen_US
dc.titleCorrelates of physical activity in a population-based sample of kidney cancer survivors: an application of the theory of planned behavioren_US
dc.typeArticleen_US

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