Associations of Quality of Life, Physical Activity and Mood States in Women with Breast Cancer Treated with Curative Intent

This study aims to investigate the associations between quality of life, physical activity and mood states in women with breast cancer. A total of 354 women (mean age, 51.74 ± 8.63 years; body mass index (BMI), 28 ± 5.67 kg/m 2 ) completed the Baecke Physical Activity Questionnaire, Profile of Mood States (POMS), European Organisation for Research and Treatment of Cancer Core Quality of Life Questionnaire (EORTC QLQ-C30) and European Organisation for Research and Treatment of Cancer Breast Cancer-Specific Quality of Life Questionnaire (EORTC QLQ-BR23). Pearson’s correlation and multiple linear regressions were used to verify the relations between outcomes and independent variables. Correlations between scores on POMS, Baecke Physical Activity Questionnaire and global health status/quality of life subscale of EORTC QLQ-C30 found associations ( p < 0.01) between physical activity ( r = 0.191), vigour ( r = 0.333) and fatigue ( r = −0.433). Multiple linear regression analysis of the global health status/quality of life subscale of the EORTC QLQ-C30 showed significant differences for vigour ( p < 0.001), social function ( p = 0.003), side effects of systemic therapy ( p = 0.019), arm and breast symptoms ( p < 0.001) and Baecke physical activity score ( p = 0.006). Physical activity is an independent factor related to the quality of life in women with breast cancer. Understanding these variables may influence clinical decisions during treatment and allow positive interventions regarding symptoms, functions and lifestyle.