Justification and aims Breast cancer is the fourth most common type of cancer worldwide and the first among women in Spain. It is also the type of cancer with the highest mortality. Several studies have assessed the effects of exercise performed in the neo-adjuvant period, but there is heterogeneity among them.~Principal aim:~To assess in women with triple-negative breast cancer receiving neo-adjuvant chemotherapy the effects of an intense physical exercise program (intervention group) on physical capacity, compared with a control group not meeting the minimum exercise recommendations of the World Health Organization (WHO).~Secondary aims:~To compare the following outcomes in both groups: body composition, and quality of life and depression/anxiety.
To assess in women with triple-negative breast cancer receiving neo-adjuvant chemotherapy the effects of an intense physical exercise program (intervention group) on physical capacity, compared with a control group not meeting the minimum exercise recommendations of the World Health Organization (WHO).