Factors predicting gains in moderate-to-vigorous physical activity in prostate cancer survivors on androgen deprivation therapy.

BACKGROUND: Whether individual, environmental, and psychosocial factors predict changes in moderate-to-vigorous physical activity (MVPA) is poorly addressed in prostate cancer (PC) survivors undergoing androgen deprivation therapy (ADT). PURPOSE: This secondary analysis of a randomized controlled trial examined changes in MVPA following a supervised personal training (PT), supervised group-based (GROUP) program, or a home-based, smartphone-assisted exercise (HOME) intervention in PC survivors on ADT and explored individual, environmental, and psychosocial predictors of MVPA. METHODS: PC survivors on ADT underwent aerobic and resistance training for 6 months via PT, GROUP, or HOME. MVPA was captured via accelerometers and the Godin Leisure-Time Exercise Questionnaire. Changes in MVPA between groups were assessed using linear regression. The following predictors of MVPA were examined using Spearman correlations: the Neighborhood Environment Walkability Scale (NEWS); the Planning, Attitudes, and Behaviours (PAB) scale; the Relatedness to Others in Physical Activity Scale (ROPAS); and individual factors at baseline. RESULTS: Participants (n = 37) were 69.4 ± 6.5 years old and 78.4% were on ADT for ≥ 3 months. Changes in accelerometry-based bouts and MVPA as well as self-reported MVPA did not differ between groups at 6 months. The Aesthetics domain of the NEWS questionnaire at baseline was the strongest predictor of positive MVPA changes (r = .66). Attitude (r = .64), planning (r = .57), and motivation (r = .50) at baseline were also predictive of engaging in higher MVPA throughout the intervention. CONCLUSION: Changes in objective MVPA were modest. Additional emphasis on specific psychosocial and individual factors is important to inform theory-based interventions that can foster PA behavior change in PC survivors on ADT. Registration # NCT02046837.

Benefits of 24 versus 12 weeks of exercise and wellness programming for women undergoing treatment for breast cancer.

PURPOSE: Community exercise programs can help maintain or improve health in cancer survivors. However, the most effective and feasible duration of a community exercise program for breast cancer survivors who are undergoing treatment is not known. This pre-post-design study evaluated the effects of the "Breast cancer patients Engaging in Activity while Undergoing Treatment" (BEAUTY) program on physical and psychosocial outcomes after 12 and 24 weeks. METHODS: BEAUTY is an ongoing community exercise and wellness program for breast cancer patients who are undergoing, or within 3 months of completing chemotherapy and radiation. Participants completed assessments at baseline, 12 weeks, and 24 weeks to measure body composition, hand-grip dynamometry, aerobic fitness, and flexibility. Self-report questionnaires assessed fatigue (FACIT-fatigue), cognitive function (FACT-cog), quality of life (QOL) (FACT-B), and depressive symptoms (CES-D). Main analyses were repeated measures general linear model for all outcomes. RESULTS: Assessments at all three time points were completed by N = 63 participants. At 24 weeks, waist to hip ratio (p = .019), duration of the submaximal treadmill test (p = .013), and estimated VO2max (p = .018) improved compared to baseline. Fatigue improved at 24 compared to 12 weeks (p = .002). FACT-B scores improved at 24 weeks when compared to both baseline (p = .002) and 12 weeks (p = .001). Depressive symptoms improved compared to baseline (p = .05) and 12 weeks (p = .009). CONCLUSIONS: Additional benefits were seen after 24 versus 12 weeks, suggesting that a longer duration exercise program during, or shortly after completing treatments for breast cancer, may be necessary to see improvements in fitness and psychosocial outcomes. Findings can be applied to community exercise and rehabilitation programs for breast cancer survivors.

Evaluation of a Community-Based Exercise Program for Breast Cancer Patients Undergoing Treatment.

BACKGROUND: Exercise is important during treatment for breast cancer to alleviate the usual declines in physical and emotional health and overall health-related quality of life (HRQL). OBJECTIVE: This study evaluated the effectiveness, safety, and enjoyment of a community exercise program for breast cancer patients who were currently undergoing or within 3 months of completing chemotherapy or radiation treatment. METHODS: Breast cancer patients Engaging in Activity while Undergoing Treatment (BEAUTY) is a 12-week program of resistance, aerobic, and flexibility exercise. Participants completed pre and post fitness assessments, and questionnaires to measure HRQL, fatigue, cognitive function, and depressive symptoms. Participants had access to group exercise classes and were provided a home-based exercise program. RESULTS: Participants (n = 80) were middle aged (mean age, 50.3 [SD, 9.0] years), and the majority were diagnosed with stage II breast cancer (53.8%). From baseline to 12 weeks, resting heart rate (mean [INCREMENT], +4.15 beats/min) and body mass index increased slightly (mean [INCREMENT], +0.47 kg/m). No clinically significant changes in HRQL or other psychosocial questionnaires, but social well-being decreased (t77 = 3.83, P = .000) slightly, and emotional well-being improved (t77 = -2.15, P = .034). Participants attended an average of 7.5 (SD, 6.5) classes; feedback about the program was positive, and no exercise-related injuries were reported. CONCLUSIONS: The BEAUTY program was feasible and effective in managing chemotherapy and radiation treatment-related declines in physical fitness and HRQL. IMPLICATIONS FOR PRACTICE: This study supports the need to integrate exercise programming as part of treatment plans for breast cancer patients.