How does mindfulness-based stress reduction (mbsr) improve psychological functioning in cancer patients?

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dc.contributor.advisorCampbell, Tavis
dc.contributor.advisorCarlson, Linda
dc.contributor.authorLabelle, Laura Elizabeth
dc.date.accessioned2017-12-18T22:30:30Z
dc.date.available2017-12-18T22:30:30Z
dc.date.issued2012
dc.descriptionBibliography: p. 146-181en
dc.descriptionIncludes copy of ethics approval. Original copy with original Partial Copyright Licence.en
dc.description.abstractOBJECTIVE: This longitudinal waitlist controlled study examined mediators of MBSR in cancer patients. First, the study explored the timing of MBSR-related change and whether earlier changes in putative mediators were associated with later changes in outcome variables. Next, a mediation model was tested based on the theory that increased mindfulness through MBSR leads to enhanced emotion regulation (indexed by rumination, worry, and experiential avoidance), which in tum leads to improved psychological functioning. The study also assessed whether increased mindfulness mediated the effects of MBSR on spirituality and posttraumatic growth. METHODS: Patients were recruited from the MBSR program waitlist and were either registered for immediate participation (n=135), or were waiting for the next program (n=76). Participants completed questionnaires pre-, mid- and post-MBSR or waiting period (i.e., 0, 4 and 8 weeks). Hierarchical linear modeling (HLM) and piecewise HLM were employed to assess changes over time as a function of condition (MBSR vs. waitlist). Cross-lagged correlations and linear regression analyses explored temporal associations among changes in mediator and outcome variables. Mediation models were tested using linear regression and bootstrapping analyses. RESULTS: Compared to the waitlist group, MBSR participants showed significant changes in expected directions on all putatjve mediator and outcome variables. In the MBSR condition, present-focused nonjudgmental attention/awareness, worry, rumination and spirituality changed during the first and second halves of the program relative to the control group; all other variables changed only during the second half in the program. Early increases in the "non judging" mindfulness facet were associated with later decreases in worry, and early increases in the "describing" facet were associated with later increases in posttraumatic growth. However, more temporal associations emerged in the direction opposite of the proposed model. Mindfulness mediated the effect of MBSR on emotion regulation, which in tum mediated the effect of mindfulness on psychological functioning. Mindfulness also mediated the effect ofMBSR on "positive" outcomes. CONCLUSIONS: Increased mindfulness and enhanced emotion regulation are related to beneficial outcomes of MBSR in cancer patients. Findings suggest bi-directional effects of mediator and outcome variables, and illustrate the need for a more detailed analysis of MB SR-related change. Determining the precise timing of change in mindfulness and its sequelae will permit stronger conclusions regarding mechanisms ofMBSR.
dc.format.extentxi, 259 leaves : ill. ; 30 cm.en
dc.identifier.citationLabelle, L. E. (2012). How does mindfulness-based stress reduction (mbsr) improve psychological functioning in cancer patients? (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/4708en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/4708
dc.identifier.urihttp://hdl.handle.net/1880/105709
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.titleHow does mindfulness-based stress reduction (mbsr) improve psychological functioning in cancer patients?
dc.typedoctoral thesis
thesis.degree.disciplinePsychology
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 2089 627942961
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
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