Question

How well the heart and lungs deliver oxygen to the muscles during exercise is a key part of which health-related fitness component?

cardio endurance
muscular endurance
flexibility
body composition

Answer 1

The ability of the heart and lungs to deliver oxygen to the muscles during exercise is a key part of **cardio endurance** (also known as cardiovascular endurance or aerobic endurance). This component of health-related fitness reflects how well the cardiovascular and respiratory systems work together to supply oxygen to the body during sustained physical activity.