the cardiovascular system Flashcards
What does the cardiovascular system do?
It circulates blood and transports oxygen around the body
What is cardiovascular endurance?
The ability of the heart and lungs to keep supplying oxygen in the bloodstream to the body, in order to provide the energy to sustain physical movement
What does cardiovascular endurance mean to someone who has to take part in an activity that requires them to keep moving for long periods of time?
That they need to ensure that they take this aspect into account an try to improve it
How does sustained activity affect an individual?
- increases breathing rate
- increases heart rate (pulse)
- increases blood pressure
Why does sustained activity affect an individual in certain ways?
This is because the working muscles require additional oxygen, which are providing the energy supply, as there has been a greater demand put upon them
What has to be done to improve a person’s cardiovascular endurance?
The only way to achieve this is to make the heart and lungs work harder in order to get them to adapt to the extra demand
How can a person improve their cardiovascular endurance?
By keeping their heart rate at a high level for some time
How is the maximum heart rate (MHR) calculated for an individual?
MHR = 220 – age
What is the training (anaerobic) zone?
80-90% of MHR
What is the aerobic zone?
60-80% of MHR
What should a person do to be able to gain the full benefits f exercise?
They should aim to work within the aerobic zone, where they are breathing aerobically, and the training zone for at least 15 minutes
How is it possible to check a person’s levels of cardiovascular endurance?
- resting pulse rate
* pulse recovery rate
How does the resting pulse rate of an individual indicate anything about their cardiovascular endurance?
The lower it is, the better a person’s endurance is
How does the pulse recovery rate of an individual indicate anything about their cardiovascular endurance?
The quicker this returns to the normal, resting rate, the higher a person’s endurance levels are
What does being able to check an individual’s levels of cardiovascular endurance mean?
That they can monitor their pulse over a period of time to try to speed up their recovery rate and, in the long term, get their resting pulse rate down to a lower level
