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How does exercise affect the heart rate?
Member rating: No Rating | Words: | Submitted: Fri Mar 31 2006
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Task: how does exercise affect the heart rate? Introduction: The heart is a four chambered pumping muscle, it pumps oxygenated blood around the body, the oxygen is transported via the red blood cells to the muscles, where the oxygen is used as part of respiration (the creation of energy from glucose and oxygen). Our test is to find out how exercise affects the heart rate. We already know that as muscles are exercised they require more oxygen, this makes the heart beat quicker to pump extra blood around the body. You can tell how healthy a person is with how long it takes their resting heart rate (heart rate after no activity for around 10 minutes) to return to normal. The more the heart fills with blood the more the fibres of the heart stretch, this means the heart is more elasticised and can pump the blood round further with one beat....
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