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# Effects of exercise on our heart rate.

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Introduction

Effects of exercise on our heart rate I am trying to carry out an investigation where I can find out about the effects of exercise on our heart rate. I will have to do various experiments with different variables such as the amount of exercise, the intensity, or the environmental conditions to obtain valid results for my investigation. I will try the experiments on two males to see if there is a difference between two people. Prediction My prediction is that as the intensity or the length of the exercise increases the heart rate increases too, the need of oxygen in the muscle tissues due to the crave in the muscles to create the energy to keep going. I also predict that the heart rate will stay high after the exercise is finished due to the oxygen debt in the muscles and the need to recover from exercise. Preliminary work I am planning to do this experiment using different variables such as length of exercise and different types of exercise to see how each of them affect it. ...read more.

Middle

Pulse Time (s) Pulse 30 93 30 90 60 102 60 128 90 140 90 130 120 160 120 136 150 172 150 142 180 178 180 160 210 181 210 163 240 183 240 171 270 184 270 180 300 184 300 182 Recovery Recovery 30 140 30 143 60 130 60 135 90 123 90 120 120 109 120 115 150 102 150 108 180 92 180 85 210 88 210 70 Skipping with a rope Person A Person B At rest = 73 bpm At rest = 65 bpm After warm up = 97bpm After warm up= 87bpm Time (s) Pulse Time (s) Pulse 30 120 30 109 60 132 60 121 90 143 90 134 120 144 120 139 150 144 150 141 180 147 180 141 210 150 210 147 Runing Graph Skipping Graph Analysis You can observe that person A's heart rate increased rapidly during the first three minutes but Person B's heart rate work more calmly all through the experiment although it reaches nearly the same maximum heart rate achieved in the experiment as person A. ...read more.

Conclusion

Finally, the CO2 levels also rose which also contributed to the heart rate rising. Evoluation My results where quite reliable as I used a heartbeat monitor to do the experiment which enabled me not to stop to take my pulse while I was doing the exercise. The evidence that I have collected during this experiment is enough to enable a firm conclusion to be drawn. This conclusion is as I had predicted that exercise increases your heart rate and also the intensity or the duration of the exercise clearly affect the increase in heart beats. A way in which I could improve my method would be by including other variables like the temperature or the place where the experiment has been done. Another thing that affects the accuracy of the experiment is that I couldn't know if I was performing at the same intensity during the whole experiment. I could make this factor disappear if I used a running machine so I could always run at the same intensity. ?? ?? ?? ?? Juan Mena ...read more.

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