Investigating the Effect of Exercise on Pulse Rate

Investigating the Effect of Exercise on Pulse Rate
Aim: To see what happens to the pulse rate during exercise. Prediction: I predict that the pulse rate will increase in order to take more oxygen for respiration. The heartbeat will increase and become stronger to transport oxygen and carbon dioxide to and from the muscle cells. The breathing rate will increase in order to get rid of the extra waste such as Carbon dioxide. Respiration is the release of energy. Anaerobic respiration occurs during prolonged exercise as our heart and muscle use up a lot of oxygen, this prevents oxygen from being transported to the lungs quick enough. The word equation for this is Glucose?? Lactic acid and energy. I predict that there will be a gradual increase in both the smoker and non-smokers pulse rate as the body begins to work harder the heartbeat is forced to increase, therefore the heart rate will increase. There are several factors as to why I predict that the heartbeat will increase in a smoker and a non-smoker. Due to the toxic chemicals such as nicotine and tar that are found in cigarette smoke your heart rate will increase, this will cause your blood vessels to contract. The tar, which is found in the cigarette smoke, irritates the air passage and Carbon dioxide then reduces the ability of blood to carry oxygen through the bloodstream. I predict that the non-smokers heart rate should be smaller during exercise as they have a healthier more effective heart. Oxygen is easily pumped around the body this reduces the amount of work that the heart has to do therefore decreasing the pulse rate. Plan: = *The resting pulse rate will be taken and recorded for both the smoker and non-smoker. The heartbeat will be taken by placing your two middle fingers on your wrist were your artery crosses with the bone. You must ensure that you do not use your own thumb as this contains a pulse itself. ==============
The results will then be recorded of the resting pulse rate and
placed into
my results table.
One-minute star jump exercise will begin.
When the star jump exercise is complete I will then record the heart
rate every minute using a stopwatch, until it returns to it?s original
resting pulse rate.
Key Factors: In order to make my experiment a safe one we had to follow many obvious rules by making sure that the area we used was open and away from other people to avoid injury to others. We made sure that proper footwear was worn and that shoelaces were tucked in. The same and even surface area used each time. Through out the exercise several safety rules have to be followed. Analysis: After reviewing my results, which are displayed in the graph, I have come to the conclusion that my prediction was correct. As we can see from my graph the smoker?s heartbeat is much higher this is because the heart has to work much harder to pump oxygen around the body. The smoker?s heartbeat is roughly ten times greater then the non- smokers, this does decrease as the pulse rate returns to normal. I can see that both heartbeats reach a peak after one minute of exercise. I notice from my graph that both pulse rates return near enough to its original resting pulse rate. The non-smokers heartbeat does increase and become stronger as it has to transport more oxygen and carbon dioxide to and from the muscle cells. Although the non-smokers heart is working hard we can conclude from the graph that the smokers pulse rate is working much harder. Evaluation: From my result table I able to conclude that although due to time restrictions my results are accurate apart from one, this is the first result from the smokers pulse rate after 3 minutes of exercise. I think that my method that I used was successful and accurate as only one of my results were anomalous. An improvement, which I could have made, was spending more time on the exercise. I found the practical easy as it was simple to do but I found the writing up of the experiment much more difficult

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