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The Cardiovascular system

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The Cardiovascular system Lesson Objectives: Be aware of what the cardiovascular (CV) system consists of. To understand what is meant by CV endurance. – PowerPoint PPT presentation

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Title: The Cardiovascular system


1
The Cardiovascular system
  • Lesson Objectives
  • Be aware of what the cardiovascular (CV) system
    consists of.
  • To understand what is meant by CV endurance.
  • To consider how CV endurance can be measured and
    improved.

2
  • The Cardivascular system
  • This is the name given to the system
    consisting of the heart and blood vessels that
    circulate and transport blood around the body.

3
  • Cardiovascular endurance
  • This is the ability of the heart and lungs to
    keep supplying oxygen in the bloodstream to the
    body in order to provide energy to enable
    physical movement.
  • So when someone takes part in activity that
    requires them to move for long periods of time,
    they need to take CV endurance into consideration
    and try to improve it.

4
  • During sustained activity you will notice
  • Increase in your breathing rate (BR)
  • Increase in your Heart rate (HR) pulse
  • Increase in your blood pressure.
  • This is because your working muscles are having
    more demand put upon them and so require more
    oxygen to provide energy.
  • Blood pressure the force of the circulating
    blood on the walls of the arteries.

5
  • Improving CV endurance
  • An essential requirement for participants in
    physical activity.
  • Everyone should look to improve their levels of
    endurance or maintain them at a high standard.
  • To do this you must make your heart and lungs
    work harder in order to get them to adapt to the
    increased demand.
  • Your HR has to be kept at a high level for a
    period of time.

6
  • The following graph shows the levels your HR
    should be raised to relative to your age using
    the calculation
  • Maximum HR 220-your age
  • e.g MHR 220 15 105

7
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8
  • To gain full benefits of exercise you should aim
    to work within the aerobic zone and the training
    zone for at least 15 mins.
  • Build up your effort slowly and do not do too
    much too quickly.

9
  • Testing CV endurance
  • Resting HR a general indicator. The lower it is
    the better your endurance level is.
  • HR recovery rate The quicker this returns to
    your normal resting HR, the higher your endurance
    levels are.
  • These 2 simple tests help you to monitor your CV
    endurance levels over a period of time.

10
  • Examiners tip
  • Questions on this topic are likely to relate to
    why levels of CV endurance are important and the
    ways in which they can be improved and measured.

11
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