Exercise Therapy and Radiation Therapy (EXERT) for Metastatic Prostate Cancer

Inclusion Criteria: * Subjects must have lymph node positive or metastatic disease consistent with prostate cancer * Males ≥18 years of age receiving RT * Patient receiving 5 fractions or stereotactic body radiation therapy (SBRT) * Patient may have received prior hormone therapy. Prior or current use of chemotherapy agents is allowed, but not necessary. * Fluent in written and spoken English * Must be able to provide and understand informed consent * Must have an ECOG Performance Status (PS) of ≤ 3 * Primary attending radiation oncologist approval Exclusion Criteria: * Performing \> 90 minutes/week of exercise therapy prior at time of enrollment * Evidence in the medical record of an absolute contraindication for exercise * Cardiac exclusion criteria: * Class II, III or IV heart failure as defined by the New York Heart Association (NYHA) functional classification system * History of acute coronary syndromes (including myocardial infarction and unstable angina), coronary angioplasty or stenting within the past 6 months prior to the start of radiation therapy * Uncontrolled arrhythmias; patients with rate-controlled atrial fibrillation for \>1 month prior to start of radiation therapy may be eligible * syncope * acute myocarditis, pericarditis, or endocarditis * acute pulmonary embolus or pulmonary infarction * thrombosis of lower extremities * suspected dissecting aneurysm * pulmonary edema * respiratory failure * acute non-cardiopulmonary disorder that may affect exercise…