Final answer:
During aerobic exercise, end-diastolic volume, cardiac contractility, and cardiac output all normally increase, but diastolic blood pressure does not increase and may decrease.
Step-by-step explanation:
The component that does NOT normally increase during an aerobic exercise session is diastolic blood pressure. During aerobic exercise, there is typically an increase in end-diastolic volume, cardiac contractility, and cardiac output. This is because the body responds to the need for more oxygenated blood by the muscles by increasing heart rate and the force of contraction, which pumps more blood per minute. However, diastolic blood pressure, which is the pressure in the arteries when the heart is at rest between beats, does not usually increase and can actually decrease due to the blood vessels relaxing and increasing in diameter during exercise.