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Investigating the effect of exercise on pulse rate

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Investigating the effect of exercise on pulse rate Introduction In this experiment we are simply investigating how can doing exercise affect your pulse rate in different ways. To do this we need to experiment with diverse types of exercise as jogging or, due to the little space in class, just stepping up and down a chair . We will also experiment with rest in different positions because maybe this difference can affect although in a lower proportion, the pulse rate. Plan First of all as we are so relaxed we will experiment with rest, which is simply resting for some time. To do that experiment first we will lie down for about 30 seconds and we will measure the pulse rate after does seconds. We will do it two times to be sure that we've done it al right. The second thing will be standing up for 30 seconds and measuring the pulse rate after it. ...read more.


We will follow the same method as before. Prediction Exercise makes the heart beat faster, bringing more blood to the muscles. In a healthy adult we know that the heartbeats should be an average of 72 times a minute although this can vary(60-80beats). When you are at rest your pulse should be normal, about 72 beats/m. Immediately after exercise your pulse rate will increase considerately because the heart needs to pump faster to give more oxygen to your body. If you don't continue doing exercise you will see that your pulse rate decreases and goes back to normal. We've decided to test your pulse rate when you are standing up and when you are lying down because there may be a difference. This is because when you are lying down your heart doesn't need to pump as faster as when you are standing up yet is more hard work to push things up than to go straight. ...read more.


I did one minute rest after that and my pulse had increased very little just two beats /m more. The last 80 steps I was completely out of breath and my pulse rate reaches 130b/m which is quite good because it means that although I did exercise I am quite fit. EVALUATION The experiment hasn't been a very fair test due to numerous complications in nature. The menstruation cycle is one variation which can alter the pulse rate as well as when you are anxious, nervous etc because the heart needs to pump quicker which means the pulse rate increases. Maybe I did less exercise than other people in my class and that's why I had less pulse rate than them or it is because I am fitter. The maximum beats per minute a teenager can have normally is 205 b/m. If I had done a graph of my results I could see if I was fit or not because when pulse rate decreases rapidly it means you are fit whilst if there is a slow recovery you are not as fit as you should. ...read more.

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