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Comparing the short-term affects that aerobic and anaerobic activity have on the body

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Body in Action-Tasks 3 and 4 In tasks 3 and 4 of my assignment I am required to create and write up an experiment to compare the short-term affects that aerobic and anaerobic activity have on the body. I will also be explaining the roles of the cardiovascular and respiratory systems. The respiratory system The respiratory system supplies the blood with oxygen. It does this by making us breathe. Respiration is the exchange of oxygen and carbon dioxide. When we breathe in, we inhale oxygen and when we breathe out we exhale carbon dioxide. The respiratory system consists of the mouth, nose, lungs trachea and the diaphragm. Oxygen enters the respiratory system when we breathe in through the mouth and nose. The oxygen then goes through the trachea, which is a tube that enters the chest. In the chest cavity, the trachea splits into two smaller tubes called the bronchi. Each bronchus then splits into smaller passages called bronchial tubes. The bronchial tubes go straight to the lungs where they split up into many smaller passages. These are connected to tiny little sacks called alveoli that are very spongy sacs filled with air and surrounded by capillaries. ...read more.


The left side of the heart receives oxygenated blood from the lungs and sends it to the rest of the body. This it what is know as a dual pump because both the left and right sides of the heart pump simultaneously. When training the body will begin to build up in waste products such as lactic acid and carbon dioxide, the cardiovascular system helps to prevent this build up by keeping muscles oxygenated and carrying out the waste products. In sport the cardiovascular system is vital in keeping us able to compete and reducing fatigue. After researching both systems I can now compare the two. I now know that one would be useless without the other. Without the cardiovascular system, the oxygenated blood would not be of any use because it wouldn't be being pumped around the body, and without the respiratory system, oxygen would never get oxygenated at all. Both the cardiovascular and respiratory systems work hand-in-hand to keep our body functioning properly. The experiment To perform the tests the class split into two groups, one aerobic and one anaerobic. Before exercising everybody from each group recorded their heart rate and blood pressure to compare with what it will be after exercise. ...read more.


It may also have been that, because there was only one person taking the whole group's blood pressure, the anaerobic group had to wait longer after exercise giving their blood pressure time to decrease. I expected to see higher blood pressure from the anaerobic group because in a high intensity anaerobic work out, the muscles need large amounts of energy in a small space of time. This means that a lot of blood is needed at once, which causes high blood pressure. This is why in strong man competitions they often get nosebleeds because of the massive blood pressure. There is a much higher increase in heart rate after aerobic activity than anaerobic activity. This is because when doing aerobic exercise, your heart needs to pump blood to the worked muscles for a longer period of time in order to prevent fatigue and maintain a steady oxygen supply. If I were to do this experiment again I would make sure there was more than one person taking blood pressure reading and ask for everybody waiting for their recording to keep exercising until their turn. I would also try and get bigger groups for more accurate results to analyse. I would also make sure that all of the equipment we used to record results was accurate and worked properly. Ross Widdup ...read more.

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