Cardiac output, stroke volume and heart rate- GCSE PE Paper 1

The video tutorial covers three key cardiovascular terms: heart rate, stroke volume, and cardiac output. It explains how these terms are defined, their significance in physical fitness, and how they relate to each other. The tutorial also discusses the effects of exercise on these cardiovascular metrics and provides guidance for exam preparation by emphasizing the importance of understanding these concepts.

What is the primary reason elite athletes have a lower resting heart rate compared to average individuals?

• Their heart beats more times per minute.

• They have a smaller heart size.

• They have a higher stroke volume.

• They exercise less frequently.

How is stroke volume defined?

• The amount of blood ejected from the heart in one beat.

• The total blood volume in the body.

• The amount of oxygen used by the heart.

• The number of heartbeats per minute.

What is cardiac output?

• The amount of blood ejected from the heart in one minute.

• The amount of oxygen consumed by the body.

• The number of heartbeats in one hour.

• The total volume of blood in the body.

During exercise, what happens to cardiac output?

• It fluctuates randomly.

• It remains the same.

• It decreases significantly.

• It increases.

Which of the following is an immediate effect of exercise on the cardiovascular system?

• Decrease in heart rate.

• Increase in cardiac output.

• Decrease in blood circulation.

• Reduction in stroke volume.