As the intensity of the dynamic exercise increases, which of the following sets of responses occurs?
a. heart rate, systolic blood pressure, and diastolic blood pressure increase
b. heart rate and systolic blood pressure increase, diastolic pressure remains unchanged
c. heart rate and systolic blood pressure increase, stroke volume and cardiac output remain the same
d. stroke volume decreases, heart rate and cardiac output increase
Answer: b. heart rate and systolic blood pressure increase, diastolic pressure remains unchanged