Figure 1From: Chronotropic incompetence and a higher frequency of myocardial ischemia in exercise echocardiographyWM Abnormality in patients with and without chronotropic incompetence. G1 group (black): patients who failed to achieve 85% of the maximal age-predicted HR; G2 group (white): patients who were able to achieve 85% of the maximal age-predicted HR.Back to article page