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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Am J Cardiol. 2015 Jul 21;116(7):1093–1100. doi: 10.1016/j.amjcard.2015.06.038

Figure 1. Scatterplot of Heart Rate Reserve versus Maximal Oxygen Consumption, Stratified by Presence or Absence of Chronotropic Incompetence.

Figure 1

Percent heart rate reserve was associated with peak VO2 in HFpEF patients with CI but not those without CI. In addition, for any given peak VO2, percent heart rate reserve was lower in HFpEF patients with CI versus those without CI. VO2 = oxygen consumption; HFpEF = heart failure with preserved ejection fraction; CI = chronotropic incompetence.