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How exercise affects pulse rate.

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Introduction

How exercise affects pulse rate Planning the experiment What variable are you going to use? I am going to investigate how exercise effects my pulse rate. Make a prediction about how your variable will affect the results of the experiment. I predict that my pulse rate will increase as I do more exercise. Give a scientific reason for your prediction. The amount of exercise a person does will effect the pulse rate. For example, more exercise means more movement so more energy will be needed. In order to get more energy; respiration needs to take place at a faster rate. More oxygen is used so more carbon dioxide is produced. Carbon dioxide is a waste product and it must be removed, as it is a toxin. Because of the extra carbon dioxide being produced, blood is pumped around the body faster in order to transport it. This process will give you a faster pulse rate. You will also get cramp if lactic acid is produced due to not enough oxygen being taken in. ...read more.

Middle

"h Repeat experiment twice. How will you make it a fair test? What will I change? What will I keep the same? "h I will change the amount of time doing exercise. "h I will use the same step during the experiment. "h I will always take my own pulse rate and I will make sure that I start my exercise using the same starting pulse rate. "h I will get the same person to take the time while I exercise. How will you make sure that your experiment is safe? I will make sure that I am wearing trainers, as otherwise I will hurt my ankles. I will also make sure that the step is on flat floor. Results Amount of time (min) Pulse rate 1 (BPM) Pulse rate 2 (BPM) Average (BPM) Resting pulse 70 72 71 1 100 110 105 2 120 125 123 3 140 139 140 4 170 157 164 5 190 183 187 Analysis and conclusions Did you observe any trends or patterns in your results? ...read more.

Conclusion

This is known as respiration and it is the process of converting glucose to energy. Evaluation Do you think your experiment was a fair one? I do think that my experiment was fair. I repeated the experiment twice and in between I always let my pulse rate return to normal. I kept the step at the same height and the same person took the time. Did all of your results fit the general pattern or trend? Yes, all of my results fit into the general pattern. Do you think your results were reliable? I think that my results are reliable as I followed my plan. I also made sure that it was a fair test. The same person took the time for me and I done the exercise at a constant speed. Was you procedure suitable? Could you improve your experiment? I feel that my procedure was suitable because I thought about my plan and followed it carefully. I also repeated my experiment twice to make sure that my results were not anomalous. I could improve my experiment by making sure that when I repeat the experiment, my pulse rate is the same as the first I done it. This would give me more accurate results. ...read more.

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