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Mediators of physical activity adoption and maintenance among breast cancer survivors

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Abstract

The purpose of this study is to explore the mediators associated with physical activity (PA) within the adoption and maintenance phase of a PA intervention trial among breast cancer survivors. Overall, 192 breast cancer survivors (average age = 55.9 years) were randomized to an Intervention or Control group. Both groups received 8 calls in the first 3-months, 3 monthly calls, and then entered a no-contact maintenance phase for the remaining 6-months. Assessments were completed at baseline, 3-months, 6-months and 12-months. On average, participants were 55.9 years of age (SD = 9.8) and 2.9 years since diagnosis (SD = 2.2). In the adoption phase, all significant univariate mediators (self-efficacy, cognitive and behavioral processes and decisional balance cons) were included in the multivariate model. Results suggest self-efficacy (ab = 13.56, SE = 7.04) and behavioral processes (ab = 36.10, SE = 12.22) were significant for PA adoption. No mediators were identified in the maintenance phase. In the adoption phase, there were significant indirect effects of group on PA adoption through self-efficacy and behavioral processes. There were no indirect effects of group on PA maintenance.

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Funding

This study was funded by a Grant from the American Cancer Society and Rays of Hope (RSGPB-03-243-01).

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Authors and Affiliations

  1. College of Nursing, University of South Carolina, Columbia, SC, USA

    Madison M. Kindred & Bernardine M. Pinto

  2. Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA

    Shira I. Dunsiger

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  1. Madison M. Kindred
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  2. Bernardine M. Pinto
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  3. Shira I. Dunsiger
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Correspondence to Madison M. Kindred.

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Conflict of interest

Madison M. Kindred, Bernardine M. Pinto, Shira I. Dunsiger declares that they have no conflict of interest.

Human and animal rights and Informed consent

All procedures followed were in accordance with ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.

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All procedure performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (including name of committee + reference number) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Kindred, M.M., Pinto, B.M. & Dunsiger, S.I. Mediators of physical activity adoption and maintenance among breast cancer survivors. J Behav Med 43, 605–613 (2020). https://doi.org/10.1007/s10865-019-00085-6

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