- Cardiovascular or cardiopulmonary disease including a heart attack or procedure within the past three months; participation in a cardiac rehabilitation program within last three months; stroke or history/treatment for transient ischemic attacks in the past three months; documented history of pulmonary embolus in past six months; unstable angina pectoris or angina pectoris at rest; known history of cardiac arrest; known history of complex ventricular arrhythmia at rest or with exercise; known history of uncontrolled atrial fibrillation (heart rate of 100 beats per minute or more); known history of NYHA Class III or IV congestive heart failure; known history of acute myocarditis, pericarditis or hypertrophic myocardiopathy; known history of clinically significant aortic stenosis; known history of left bundle branch block or cardiac pacemaker unless evaluated by a cardiologist; cardiac defibrillator; heart transplant; known history of aortic aneurysm of at least 7 cm in diameter or aortic aneurysm repair;