Plots of peak systolic blood pressure (BP) and exercise duration during baseline, during placebo administration, and during losartan administration in a randomized, controlled, cross-over trial. Treatment with the angiotensin II antagonist losartan increased exercise time. (From Warner JG, Metzger C, Kitzman DW, et al. Losartan improves exercise tolerance in patients with diastolic dysfunction and a hypertensive response to exercise. J Am Coll Cardiol 1999;33:1567-72; with permission. Copyright © 1999, American College of Cardiology.)