History of another primary cancer (other than non-melanoma skin cancer)
Evidence of distant metastatic disease
Pregnant or breast feeding
Unable to provide a baseline blood sample
Myocardial infarction or coronary revascularization procedure within the past three months
Uncontrolled hypertension (systolic blood pressure ≥180 mm Hg or diastolic blood pressure ≥100 mm Hg)
High-risk or uncontrolled cardiac arrhythmias
Clinically significant heart valve disease
Decompensated heart failure
A known aortic aneurysm
Any other condition which, in the opinion of the investigator, may impede testing of study hypotheses or make it unsafe to engage in the exercise program