Find out whether exercise affect heart rate.

Table of result

Amount of exercise {per minute}

Pulse rate {beats per minute}

0

75

2

82

4

89

6

96

8

04

0

11

Analysis

From my investigation I found out that as the amount of exercise increases so does your heart rate.

This agreed with my prediction because I predicted that as the amount of exercise so does your heart rate. The heart is one of the biggest muscles in our body , which pumps blood around our body. The blood carries important substances and the most important substance in our blood is oxygen. Oxygen is needed to ensure the muscles work properly to produce energy. At rest my body needed energy for muscles, this kept my muscles moving and my body temperature constant. When I exercised my muscles needed a lot of energy therefore I burnt more food in my muscles, I needed oxygen to burn the food. My lungs therefore had to take in more oxygen so I breathed in heavier. My heart rate increased because extra oxygen had to be taken to the muscles after exercise my muscles returned to pre-exercise state.

The trend of my results suggests as you increase the amount of exercise then heart rate will also increase and if you decrease the amount of exercise then heart rate will also decrease .

From my graph I can tall that as the amount of exercise increase so does my heart rate because my graph is a straight line. My graph indicates heart rate is directly proportional to amount of exercise.

Evaluation

I think my in my investigation was a success. My result were of a high quality and I did not get any anomalous results. If I had not carried out the investigation accurately and did not make it fair test I may have got anomalous results. This could have been because of timing the exercise incorrectly and changing the exercise.

My results were accurate however they may have not been one hundred percent accurate because there were factors I could not control such as the environment. In hotter weather your heart rate increases slightly. Overall my investigation was a fair test.

The procedure I used in my investigation was effective because it was safe, easy to understand and easy to carry out. For example young children could carry out my procedure. Also it din't required a lot of equipment, just a stopwatch and an opened area, which was easier to find. Finally it was a god procedure because I used a stopwatch which was much more reliable then counting in my head.

A bad point about my procedure is there are lots of safety risks I had to think about such as obstructions on the floor, secondly a bad point about was also that I had to count my own pulse rate, this was unreliable and I may have miss a count or lost count.

If I were to repeat the investigation I would use a pulse rate monitor because it is more reliable as it counts your pulse rate for you. Secondly if I were to repeat the investigation I would use a shorter period of time because ten minutes was a long time and I felt exhausted afterwards.

Further investigations I could do if I was to test the heart rate could be an activity circuit with a range of different exercise, which would have the same period of time. Therefore I would be testing how heart rate changes with different exercises.