Activity Coaching During Pelvic Radiation Therapy

This study tests an activity coaching program delivered through a web-based platform to help women with endometrial (uterine) cancer stay physically active during pelvic radiation therapy given after surgery, which can cause fatigue and reduced activity levels. **You may be eligible if...** - You are 18 or older - You have been diagnosed with endometrial cancer (any stage I–IVA) - You have had a hysterectomy and are scheduled to receive adjuvant (post-surgery) pelvic radiation therapy - You are in good physical condition (ECOG 0–1) - You can walk without assistance and do not have significant fall risk or cognitive impairment - You have access to a computer, smartphone, or tablet **You may NOT be eligible if...** - You are already doing 150 minutes or more of moderate exercise per week - You have unstable angina, uncontrolled heart rhythm problems, or acute pulmonary embolism - You have an active lung infection - You are unable to complete the five-times-stand test Talk to your doctor to see if this trial is right for you.