Exercise and dietary advice intervention for survivors of triple-negative breast cancer: effects on body fat, physical function, quality of life, and adipokine profile.
Study Goal
The researchers aimed to determine if an exercise and dietary counseling program could improve body fat, physical function, and quality of life in triple-negative breast cancer survivors, and whether it affected obesity-related biomarkers.
Results Summary
The intervention group lost more body fat, improved quality of life, and reduced sedentary time compared to controls, but showed no significant changes in exercise capacity, serum cytokines, or adipokines. BMI was correlated with favorable changes in leptin and adiponectin.
Population
Survivors of triple-negative breast cancer with BMI >25.
Effective Dosage
Moderate-intensity aerobic exercise (150 min per week) and diet counseling.
Duration
12 weeks
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | decrease | body fat | survivors of triple-negative breast cancer with BMI >25 | 2.4 % loss vs. 0.4 % gain | lost more body fat | #1 |
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | increase | quality of life (FACT-B total score) | survivors of triple-negative breast cancer with BMI >25 | +14 pts | improved quality of life | #2 |
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | decrease | sedentary time | survivors of triple-negative breast cancer with BMI >25 | - | decreased sedentary time | #3 |
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | no change | peak exercise capacity | survivors of triple-negative breast cancer with BMI >25 | - | did not improve | #4 |
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | no change | serum cytokines and adipokines | survivors of triple-negative breast cancer with BMI >25 | - | had no effect on | #5 |
Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling | neutral | BMI | survivors of triple-negative breast cancer with BMI >25 | - | were significantly correlated with | #6 |
Exercise and dietary counseling | decrease | body fat | survivors of triple-negative breast cancer | - | led to loss of body fat | #7 |
Exercise and dietary counseling | increase | quality of life | survivors of triple-negative breast cancer | - | improved quality of life | #8 |
Exercise and healthy eating | neutral | benefits in quality of life and decreased inflammation | survivors of triple-negative breast cancer | - | may be equally effective | #9 |
PURPOSE: Regular exercise and healthy eating are routinely recommended for breast cancer survivors, and past studies show benefits in quality of life and decreased inflammation. However, this has not been tested specifically in triple-negative breast cancer survivors. Increasing physical activity and losing body fat are thought to positively affect inflammatory biomarkers that have been associated with breast cancer. Therefore, the primary purpose of this study was to determine if participation in an exercise and dietary counseling program can improve body fat, physical function, and quality of life in survivors of this aggressive breast cancer. Secondarily, we sought to determine if participation in the program had beneficial effects on obesity-related markers of the adipokine profile. METHODS: Sixty-six survivors of triple-negative breast cancer with BMI >25 were invited to participate. Twenty-eight enrolled and 23 completed the randomized, controlled trial (13 intervention, 10 control). Moderate-intensity aerobic exercise (150 min per week, for 12 weeks) and diet counseling were compared to usual care, education only. The primary outcome of interest was weight loss (body mass, BMI, % fat), and secondary outcomes included physical function (exercise capacity), quality of life (Function After Cancer Therapy-Breast (FACT-B)), cytokines (C-reactive protein (CRP), TNF-α, IL-6), and adipokine profile (leptin, adiponectin, insulin). RESULTS: Participants in the program lost more body fat (2.4 % loss vs. 0.4 % gain, p < 0.05) than the control group. The intervention group also improved quality of life (FACT-B total score +14 pts) and decreased sedentary time but did not improve peak exercise capacity. The intervention had no effect on serum cytokines and adipokines after 12 weeks in the program. However, serum leptin and adiponectin and their ratio were significantly correlated with BMI in the intervention group (p < 0.05). CONCLUSIONS: Exercise and dietary counseling led to loss of body fat and improved quality of life in survivors of triple-negative breast cancer. BMI was associated with favorable changes in leptin and adiponectin which may reflect a change in adiposity with intervention. Exercise and healthy eating may be equally effective in this high-risk population as in other breast cancer survivors and should be encouraged as a part of a cancer survivorship program.