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Core 2: Factors affecting performance
How does the body respond to aerobic training?
Cardiac output
Cardiac output (Q) is the total amount of blood pumped out of the left ventricle of the heart each minute. The following formula is used to calculate how much blood is pumped out of the heart each minute.
| Cardiac output = | stroke volume x heart rate (litres per minute) |
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How does the intensity of exercise affect cardiac output?
The graph below shows the relationship between the amount of blood pumped by the heart (in litres per minute) and the overall heart rate (in beats per minute, bpm). Therefore, at any heart rate it is possible to determine the amount of blood pumped out of the heart. For example, at 100 beats per minute on this graph, the athlete has a cardiac output of 8 litres per minute.
Look at the following graph and answer the questions in the student activity.
Student activity |
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