Final answer:
Consistent lifelong exercise can preserve heart muscle in the elderly to levels that match or exceed those of healthy young sedentary adults.
Step-by-step explanation:
True. Consistent lifelong exercise can preserve heart muscle in the elderly to levels that match or even exceed those of healthy young sedentary adults. Regular exercise promotes cardiovascular health by increasing stroke volume, lowering cholesterol levels, decreasing plaque formation, and reducing blood pressure. These benefits contribute to the overall health and efficiency of the heart. Studies have shown that even as little as 30 minutes of noncontinuous exercise each day can have beneficial effects on heart health.