How does a high stroke volume contribute to an athlete's performance?

A high stroke volume significantly contributes to an athlete's performance by enhancing their aerobic capacity. Stroke volume refers to the amount of blood pumped by the heart with each beat, and when this volume is high, it means that more oxygen-rich blood is delivered to the muscles during exercise. This improved oxygen delivery is crucial for sustaining prolonged physical activity and enhancing endurance.

As a result, athletes with a higher stroke volume can exercise at higher intensities for longer periods without fatigue, which is vital in endurance sports like long-distance running, cycling, and swimming. Additionally, the body's ability to efficiently utilize oxygen directly impacts performance, allowing athletes to maintain speed and intensity throughout their activities.

Therefore, the correct answer underscores the role of increased stroke volume in supporting superior aerobic performance, making it a key factor in athletic success.