Breast Cancer Survivors’ Exercise Preferences Before And After An Exercise Behavior Change Intervention

Abstract

RESULTS:When RT was performed during survivorship, significant differences between the RT and control groups were found for changes in muscle size (0.38kg [95% CI 0.06, 0.71], p = 0.02; I 2 = 50.7%, p = 0.01) and fat mass (-0.55kg [95% CI -0.97, -0.13], p = 0.01; I 2 = 71.3%, p = <0.001). When RT was performed during treatment, there was a significant difference between RT and control groups for changes in muscle size (0.86kg [95% CI 0.25, 1.47], p = 0.005; I 2 = 0.0%, p = 0.63), however there was no difference between groups for changes in fat mass (-0.00kg [95% CI -0.82, 0.81], p = 0.99; I 2 = 0.0%, p = 0.62). CONCLUSION: Modest improvements in body composition were observed following RT in cancer survivors on treatment and throughout survivorship. These changes are smaller than those observed following similar programs in the general population. The reason for these differences warrants further investigation.