Effects Of Physical Training On Cardiovascular Capacity In Patients Undergoing Chemotherapy For Cancer

Introduction: Cancer treatment, especially chemotherapy and radiotherapy, can lead to cardiovascular dysfunctions, such as a decrease in left ventricular ejection fraction and electrical dysfunction of the heart, which may consequently compromise patients' quality of life. In this context, physical exercise is a beneficial and promising tool, as it can prevent and minimize the deleterious effects of oncological therapies and their complications. Objective: To evaluate the effect of physical exercise on the prevention of cardiovascular diseases (CVD) induced by cancer treatment, analyzing the impact of supervised exercise on cardiovascular function and quality of life. Materials and Methods: This is a clinical trial in which the sample will consist of 60 individuals undergoing cancer treatment, who will be stratified and randomized according to cancer stage classification into two groups: Intervention Group (IG) and Control Group (CG). The intervention will last 12 weeks, during which the IG will receive a prescription for physical exercises based on the FITT principle (frequency, intensity, time, and type), three times per week, while the CG will remain under usual care. Data will be presented using descriptive statistics, tests for two independent samples, and multivariate analysis, comparing the intervention effects between the two groups using R software version 4.3.3. Expected Results: Low incidence of CVD, improved heart rate variability, adherence to the exercise protocol, reduced risk for cardiovascular diseases, improvement in fatigue, functional capacity, and quality of life. Data will be collected at baseline, at the 6th week, and at the 12th week of intervention.