How the Oxygen Transport Works - Four Key Points
- The main aim of the oxygen transport system is to help you exercise.
- As you increase oxygen intake during exercise (by breathing in) you can participate and train in more demanding ways.
- The lungs, heart, blood and muscles all play an important part in the oxygen transport system.
- The respiratory and circulatory systems work together to provide muscles with oxygen, which enables you to exercise.
This diagram is useful - but is not essential in the Standard Grade P.E course.
The Benefits of Training - Six Key Points
- Regular exercise is very good for the heart and lungs: it increases the size of the heart.
- This enables more blood to be pushed around the body following a contraction of the heart muscles.
- This lowers the heart rate.
- The lower your heart rate the fitter you are.
- By improving your oxygen transport system you can raise your anaerobic threshold.
- This means you can work aerobically for a longer time and at a higher level of intensity.
An 800m runner who aims to complete their run in 2 minutes 30 seconds to 3 minutes would benefit from an effective oxygen transport system as this would enable them to work aerobically for a longer time and at a quicker speed.
Different Levels of Oxygen Intake During Physical Activity - Four Key Points
- The size of your lungs increases as you exercise and this provides the body with more oxygen through deeper and more frequent breathing.
- The more oxygen you can take into your lungs the greater your capacity will be for exercise.
- This can be measured through breathing tests which calculate your maximal oxygen uptake or VO2 max during a minute of exercise.
- At rest you…