Importance of chronotropic response and left ventricular long-axis function for exercise performance in patients with heart failure and preserved ejection fraction

•We evaluated the chronotropic response and LV function in HFPEF during exercise.•We evaluated the functional aerobic capacity in HFPEF during exercise.•Chronotropic incompetence was more profound in HFPEF with low aerobic capacity.•LV long-axis dysfunction was more profound in HFPEF with low aerobic capacity.