METABOLIC COST OF UNLOADED VERSUS RAMP EXERCISE: MECHANISMS OF EXERCISE INTOLERANCE IN HEART FAILURE PRESERVED EJECTION FRACTION

Exercise intolerance is a cardinal symptom of heart failure with preserved ejection (HFpEF). Mechanisms contributing to exercise intolerance in HFpEF remain incompletely understood. We performed cycle ergometry cardiopulmonary exercise testing in 31 HFpEF patients and 33 controls. Aerobic