Experiment to Measure the Heart Rate and Ventilation Rate Before, During and After Moderate Exercise

2122 Words Apr 25th, 2012 9 Pages
Human Biology Unit 2 Assignment

Aim:
Carry out an experiment to measure the heart rate and ventilation rate before, during and after moderate exercise.
Introduction:
I predict that during exercise the heart and respiratory rate (RR) will increase depending on the intensity of exercise and the resting rates will be restored soon after exercise has stopped. I believe that the changes are caused by the increased need for oxygen and energy in muscles as they have to contract faster during exercise. When the exercise is finished the heart and ventilation rates will gradually decrease back to the resting rates as the muscles’ need for oxygen and energy will be smaller than during exercise.
Experiment:
1. To start with the
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If we do not, we would not get accurate results. If we were to take the subject’s pulse rate standing up the heart rate would rise because the muscles are working to keep the subject upright. The heart rate would have to work harder in order to keep their muscles working.
We decided to measure the subject’s pulse and respiratory rates whilst sitting down because there would be no additional stress on their heart, which would increase their heart rate. Their heart rate should also return to its resting heart rate due to the decrease of muscle use.
I have placed the results from our experiment in form of a table and will use the average results to form a graph. I have also prepared a graph to show the results throughout the exercise.

Length of | Results 1 | Results 2 | Results 3 | Average | Exercise | | | | | Resting rates | 88 BPM | 88 BPM | 88 BPM | 88 BPM | | 24 RR | 24 RR | 24 RR | 24 RR | Exercise 1 | 116 BPM | 104 BPM | 108 BPM | 110 BPM | 30 secs. | 28 RR | 32 RR | 30 RR | 30 RR | Exercise 2 | 132 BPM | 120 BPM | 120 BPM | 124 BPM | 30 secs. | 32 RR | 32 RR | 32 RR | 32 RR | Exercise 3 | 128 BPM | 108 BPM | 116 BPM | 118 BPM | 30 secs. | 32 RR | 32 RR | 32 RR | 32 RR | Exercise 4 | 120 BPM | 104 BPM | 112 BPM | 112 BPM | 30 secs. | 32 RR | 36 RR | 32 RR | 34 RR | Exercise 5 | 108 BPM | 104 BPM | 108 BPM | 107 BPM | 30 secs. | 32 RR | 28 RR | 32 RR | 31 RR |

The in-between | Results 1