Final answer:
Systolic blood pressure increases dramatically during exercise to enhance blood flow while diastolic blood pressure may change minimally or slightly decreases, both returning to baseline after exercise.
Step-by-step explanation:
As the intensity of exercise increases, changes in both systolic blood pressure (SBP) and diastolic blood pressure (DBP) are observed. Systolic blood pressure tends to increase substantially during physical activity to meet the higher oxygen and nutrient demands of the body. The increase in SBP facilitates greater blood flow throughout the body. Once the exercise has ended, SBP usually returns to its baseline level. In contrast, diastolic blood pressure changes minimally or sometimes slightly decreases during vigorous physical activity. This is partially due to the expansion of blood vessels to accommodate the increased blood flow. The rise in SBP and slight change in DBP during exercise are normal responses and have no adverse health implications.