Diastolic blood pressure ______ during aerobic exercise and _____ during resistance training

During aerobic exercise, diastolic blood pressure typically remains stable or slightly decreases. This response occurs because aerobic activity often induces vasodilation in the large blood vessels, allowing for better blood flow and a reduction in vascular resistance. In contrast, during resistance training, diastolic blood pressure can significantly increase. This happens due to the mechanical strain of lifting weights, which leads to increased vascular resistance and a transient increase in blood pressure as the heart pumps to overcome this resistance.

Thus, the most accurate response reflects that diastolic blood pressure slightly decreases during aerobic exercise, indicating improved blood flow and efficiency, while it significantly increases during resistance training due to the higher demands placed on the cardiovascular system.