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This is my investigation into the way that exercise affects the human pulse. The aim of this investigation is to test how different types of exercise vary the rate of your pulse.

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Introduction

Investigation in to Pulse Rates This is my investigation into the way that exercise affects the human pulse. The aim of this investigation is to test how different types of exercise vary the rate of your pulse. To begin this experiment I gathered some information about the 'pulse' and other topics involved with it. The pulse is caused by a stretching of the arteries that takes place after each heartbeat. It can be felt easily by placing the fingers on the wrist or neck at a point where a main artery lies. Each heartbeat is basically a contraction of the muscles in the heart that transports the blood into the arterial system. That is then followed by a rest which is the heart being refilled with blood. As the heart contracts, the blood is pumped into the aorta and the pulmonary arteries. The aorta, the largest artery in the body, carries the oxygenated blood in the lungs from the left side of the heart to the rest of the body. As the blood rushes into the aorta its elastic walls are stretched and has to expand to make room for the blood coming in. ...read more.

Middle

An adult's heart weighs as much as from 250 to 320 grams. The heart lies near the middle of the chest, between the lungs. The heart is situated closer to the front of the chest than to the back and slightly to the left side. The heart, together with the arteries, the veins and the capillaries-are called the circulatory system. Factors The factors that I could investigate are: * 'Exercise' how different types of exercise for a set length of time can affect the rate of the pulse. The results would be shown on graphs and tables. The tests would be repeated 3 times. * 'Body positions' how different body positions affect the rate of the pulse. The pulse would be taken before then taken after. The results would be show in tables and graphs. * 'Drink stimulants' to test how different so called 'energy' drinks affect the rate of the pulse. Would test drinks such as Red Bull, Lucozade, coffee and tea. The factor I have chosen to investigate is 'exercise'. We will be performing 5 different exercises, taking the pulse before and after the exercise and then recording the results. ...read more.

Conclusion

We will make sure that the stop-clock is started and stopped at each point when it needs to be correctly. We will make sure that we put the same amount of effort into each exercise other wise that will affect the end results. To make sure it is a fair test we will be repeating each exercise 3 times to get a average pulse rate. Safety For our safety during the investigation we will not over work ourselves or work in the sun as this could cause sunstroke. We will be repeating the tests 3 times, to make sure we get the most accurate result we can and so we can get an average pulse rate. This will make it fairer also. My Prediction My prediction is that exercise will affect the pulse. The exercises that are more harder to do such star jumps and jogging work you harder, so your heart beats faster and your pulse gets quicker. 1ST 2ND 3RD AVERAGE JOGGING ON THE SPOT 79, 202 78 205 79 212 206 SIT-UPS 76 98 75 105 79 102 101 STAR JUMPS 78 224 79 227 82 232 228 SKIPPING PRESS-UPS ...read more.

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