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Randomized Controlled Trial
. 2016 Aug;10(4):654-62.
doi: 10.1007/s11764-015-0511-6. Epub 2016 Jan 19.

Exercise adherence in a randomized trial of exercise on aromatase inhibitor arthralgias in breast cancer survivors: the Hormones and Physical Exercise (HOPE) study

Hannah Arem  1 , Mia Sorkin  2 , Brenda Cartmel  2   3 , Martha Fiellin  2 , Scott Capozza  2 , Maura Harrigan  2 , Elizabeth Ercolano  2   3 , Yang Zhou  3 , Tara Sanft  3 , Cary Gross  3 , Kathryn Schmitz  4 , Tuhina Neogi  5 , Dawn Hershman  6 , Jennifer Ligibel  7 , Melinda L Irwin  8   9   10
Affiliations
Randomized Controlled Trial

Exercise adherence in a randomized trial of exercise on aromatase inhibitor arthralgias in breast cancer survivors: the Hormones and Physical Exercise (HOPE) study

Hannah Arem et al. J Cancer Surviv. 2016 Aug.

Abstract

Purpose: Up to 50 % of postmenopausal breast cancer survivors taking aromatase inhibitors (AIs) experience AI-associated arthralgias, or joint pain, which causes many to stop taking AIs and may inhibit exercise, despite known health benefits. We thus evaluated exercise adherence and factors associated with better exercise adherence in breast cancer survivors experiencing AI-induced arthralgia in the (HOPE) year long randomized controlled trial.

Methods: We included 61 HOPE women randomized to exercise (150 min/week of moderate-intensity aerobic exercise and twice-weekly supervised strength training). Our main outcomes were aerobic exercise measured with daily activity logs, attendance at supervised exercise sessions, and changes in cardiorespiratory fitness, measured maximal oxygen consumption (VO2max). We examined means and standard deviations (SDs) for exercise adherence by demographic and medical characteristics and used the t test for mean differences. We also examined predictors of adherence using linear regression.

Results: On average, at the end of the year long trial, women reported 119 (SD 78) min/week of moderate-intensity aerobic exercise and participated in 70 % of supervised exercise training sessions. After adjustment for other factors that influence adherence, at 6 months postrandomization, only baseline VO2max was associated with higher aerobic exercise levels and at 12 months, only older age predicted better supervised exercise training attendance.

Conclusions: Breast cancer survivors taking AIs and experiencing arthralgia are able to initiate and maintain a year long exercise program, regardless of other factors that influence activity levels.

Implications for cancer survivors: Breast cancer survivors can exercise at levels that have been shown to improve AI-associated arthralgia.

Keywords: Aromatase inhibitors; Arthralgia; Breast cancer; Exercise; Physical activity.

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Conflict of interest statement

Compliance with Ethical Standards: Conflicts of interest: All other authors report no conflicts of interest.

Figures

Figure 1
Figure 1. Flow of participants through the HOPE Study
See this image and copyright information in PMC

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