Abstract
AimThe aim of this study was to test the feasibility and fidelity of an intervention, Moving On, aimed to increase outcome expectations OEs (i.e. what one expects to obtain or avoid as a result of a behaviour) and exercise among breast cancer survivors.DesignRandomized controlled trialMethodsIntervention arm participants will be given a theory‐guided booklet that was co‐created by the research team and three physically active breast cancer survivors who exercise to manage late and long‐term treatment effects. Attention control arm participants will be given a similar booklet focused on diet. Participants will have 1 week to complete reading, writing and reflecting activities in the booklets. Study outcomes will be measured through online surveys; exercise will also be measured objectively with a Fitbit®. Four weeks postintervention, participants’ thoughts about the usefulness, strengths and weakness of the intervention booklet will be assessed. OEs and exercise will be measured at baseline, 4‐, 8‐ and 12‐week postintervention.
Highlights
Breast cancer is the most prevalent cancer among women in 145 countries (World Health Organization, 2011)
To potentially achieve these exercise benefits, the American Cancer Society recommends that cancer survivors engage in a minimum of 150 weekly minutes of moderate-intensity exercise (Rock et al, 2012)
Interventions that focus on exercise outcome expectations (OEs) may be useful in increasing exercise levels among breast cancer survivors
Summary
Breast cancer is the most prevalent cancer among women in 145 countries (World Health Organization, 2011). Dimensions of OEs include: (i) importance—value placed on the outcome(s); (ii) certainty—perceived probability outcome(s) will occur; and (iii) accessibility—the frequency with which outcome(s) are considered (Gross, Holtz, & Miller, 1995; Olson, Roese, & Zanna, 1996; Petty & Krosnick, 2014) The first of these dimensions importance can be increased through elaboration of why outcomes are desirable, certainty can be increased by vicarious experience or the observation of another person obtaining outcomes and accessibility can be increased by implementing methods to prompt individuals to think about the association between exercise and its outcomes (Fazio, 1995; Wegener, Downing, & Krosnick, 1995). Previous research suggests that breast cancer survivors are influenced to act on messages received from other breast cancer survivors (Hopfer, 2012)
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