...that exercise training is safe, useful and effective therapy and does not worsen cardiac function in heart failure?

Exercise training in heart failure is safe, useful and effective therapy in the management of heart failure patients. Contrary to the old belief, it does not worsen cardiac function. Smaller studies also reported reduction in mortality and morbidity associated with exercise training. The available data support training HF patients to improve exercise tolerance and symptoms. Patients should be properly reviewed by their physicians prior to engaging in exercise training. It is highly recommended that patients be referred to a cardiac rehabilitation program, especially those with severe or advanced heart failure.