Oxygen Transport System

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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.

(http://t2.gstatic.com/images?q=tbn:ANd9GcSk0bfenP3NxepTc3e-gv08vwjRcvwS6tDTsUVRIsDr975n0uNQ)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


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