Exercise Therapy to Improve Cardiovascular Health in Post-Menopausal Women After Treatment for Early Stage Breast Cancer

This study is testing whether a structured exercise program can improve heart health in post-menopausal women who have finished treatment for early-stage breast cancer. Many breast cancer survivors have reduced fitness after treatment, and this study explores if targeted exercise can reverse that decline. **You may be eligible if:** - You are a female aged 21–80 - You had early-stage breast cancer (stages I–III) that was surgically removed - You are post-menopausal (naturally, chemically, or surgically) - You completed all cancer treatment at least 1 year ago but no more than 5 years ago - Your exercise capacity (measured by a cardiopulmonary exercise test) is below normal for your age **You may NOT be eligible if:** - You have significant heart problems, uncontrolled high blood pressure, or other conditions that make exercise unsafe - You are currently pregnant - Your cancer has returned or spread - You are unable to perform the required exercise testing Talk to your doctor to see if this trial is right for you.