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. Author manuscript; available in PMC: 2013 Jun 27.
Published in final edited form as: Cardiol Clin. 2011 Aug;29(3):461–477. doi: 10.1016/j.ccl.2011.06.002

Fig. 9.

Fig. 9

Heart rate acceleration during exercise in controls (Con) and patients who have heart failure and preserved EF (HFpEF). (From Borlaug BA, Melenovsky V, Russell SD, et al. Impaired chronotropic and vasodilator reserves limit exercise capacity in patients with heart failure and a preserved ejection fraction. Circulation 2006;114:2144; with permission.)