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Respiration Investigation

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Respiration Investigation Introduction In this investigation I am going to find out if there is a relationship between the amount of exercise a person does and a consequent increase in the pulse rate. For muscles to work they need energy released from many different foods taken into the body in many different ways and these foods are converted into glucose sugar before they can be used as a source of energy. Respiration - Respiration is the release of energy from glucose or another organic chemical. The chemical energy in glucose can be used to provide the energy required for growth, repair and movement. In fact most things you do require energy. The food is carried by the blood stream, which is pumped around the body by the heart. For respiration to take place you need Oxygen (from the lungs) and Glucose (chemical food) Glucose + oxygen = carbon dioxide + water + ENERGY Carbohydrates and fats are high energy food substances. ...read more.


Method To do this test properly I will have to make it a fair test. I am going to do press ups for my exercise. I will record my pulse rate before the exercise and after the exercise. I will record my pulse rate for how many beats in one minute and I will record the change from the beats at the beginning and at the end. I will do 10 push ups then 20 then 30,40,50 and record all of these the same as before. I will try and make it a fair test by doing the exact amount of press ups and recording my pulse rate straight after the exercise and using an accurate timer. For this experiment I will need * An accurate timer * Pen * Recording paper Step by step 1. Check that you have a pulse rate, record its resting rate and you know where it is. 2. Record how many times your pulse beats in one minute using the accurate timer. 3. ...read more.


* Taking my pulse readings accurately * Doing the press so close together which meant that there was not much resting time between for the pulse rate to slow down. If I had to carry out this investigation again I would ask someone else to record the time so I only had to concentrate on the press ups. Also I would try to allocate more time for the exercise investigation. There would be several variables I would like to investigate next time. Firstly, I would like to test the effect different types of exercise had on the pulse rate, for example, sit-ups, skipping or running on the spot. I would like to see whether the effect on the pulse rate varied according to the time delay between each individual exercise. Lastly, I would like to test whether a period of eating a diet of high energy food substances, i.e. carbohydrates and fats, had a significant effect on energy levels and perhaps an effect on pulse rate and the effect that a regime of regular exercise before an exercise investigation had on the pulse rate. ...read more.

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