Breast cancer represents a relevant health problem both in Brazil and globally, bringing several adverse effects due to treatments, which may include surgeries and/or complementary therapies. Among these consequences, cardiorespiratory changes stand out and require special attention. Therefore, it is essential to develop rehabilitation strategies that promote adherence and effectiveness, through the implementation of a specific and detailed protocol for this population, which includes a combined global training of Mat Pilates, Zumba and Thoracoabdominal Rebalancing with the aim of improving the patients' cardiorespiratory condition.

To evaluate the impacts of an exercise protocol consisting of Mat Pilates, Zumba and Thoracoabdominal Rebalancing on the cardiorespiratory conditions of women undergoing breast cancer treatment.

Controlled and randomized clinical trial, carried out with women after surgery and undergoing breast cancer treatment, randomized to the intervention group (IG = 8) that received the Zumba, Mat Pilates and Thoracoabdominal Rebalancing protocol and the control group (CG = 8) that did not receive the protocol. The protocol was carried out in 10 sessions, 2 per week on alternate days. Protocol consisting of monitoring initial and final signs (heart rate, diastolic and systolic blood pressure), reeducation of respiratory biomechanics using the Thoracoabdominal Rebalancing Method, 10 minutes of Zumba and 10 minutes of Mat Pilates. Before and after the protocol period, general and clinical characteristics, the physical activity questionnaire (IPAQ) and cardiorespiratory conditions were evaluated considering respiratory muscle strength (maximum inspiratory and expiratory pressures), peripheral muscle strength (handgrip test) and functional capacity using the sit-to-stand test. The variables were analyzed using specific intra (Wilcoxon) and intergroup (Mann-Whitney) statistical tests.

The IG was 43.2 ± 7.2 years old and the CG was 59.3 ± 5.5 years old. 75% of the IG and 25% of the CG practiced physical activity. In the intragroup analysis, the IG showed a significant improvement in sit-to-stand test (p = 0.048), while the CG showed a significant worsening in maximum inspiratory pressure (p = 0.039) and in handgrip of the dominant hand (p = 0.030). In the intergroup analysis, there was a significant difference in systolic blood pressure (p = 0.019), with the CG having higher values ??and in the handgrip of the dominant hand (p = 0.048), with the IG having higher values. This indicates that the protocol has the potential to improve or maintain the variables analyzed in the study, since in participants who did not follow the protocol, a reduction in these variables was observed over time.

The treatment protocol had a positive impact on the cardiorespiratory conditions of the IG, considering sit-to-stand test and blood pressure, in addition to maintaining respiratory and peripheral muscle strength variables. While the patients in the CG, who did not undergo the intervention, had a negative impact on the inspiratory and peripheral muscle strength of the dominant hand.

The results found demonstrate the potential that this protocol has in providing improvements in the cardiorespiratory conditions of this population, through the combination of specific and well-structured exercises, improving recovery and functionality.