American College of Sports Medicine and the American Heart Association contraindications to aerobic exercise and resistance training programs include:
- Recent Myocardial Infarction
- Electrocardiography Changes
- Complete Heart Block
- Acute Congestive Heart Failure
- Unstable Angina
- Uncontrolled Hypertension
http://www.aafp.org/afp/2010/0101/p55.html