“…The third, and clinically the most common response, which is seen especially in patients following an infarction, is a normal submaximum response with a precipitous fall in systolic pressure at higher workloads (see Fig. 20 The classic use of a target heart rate or rating of perceived exertion for assigning the intensity of exercise may not be appropriate for patients with this abnormality. This response is often associated with pronounced ST-segment depression, angina, cardiomyopathy, and large infarctions with poor ejection fractions.…”