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Effects of exercise on pulse rate.

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Introduction

Effects of exercise on pulse rate Apparatus: * The apparatus which I we will be using in this investigation are: � A person doing the exercise * A stop watch - the make sure that the person does the exercise for the certain time which is required. Plan First of all I intend to record my pulse (resting pulse rate) before the exercise. Then I will carry out a series of simple exercises, which will have an effect on my pulse rate. I will record and compare the results, recording my heart after the exercise for 1 minute. I will be performing one basic exercise - step-ups. A step test provides a convenient mean to use heart rate to evaluate the efficiency of the cardiovascular response to aerobic exercise. It will also include analysing the results to see if there are any trends or patterns in the results, and putting relevant information in the form of graphs and charts. At the end of the investigation I will use scientific knowledge and understanding to explain as well as to analyse my findings. ...read more.

Middle

Prediction I predict that the rate of respiration will increase as a result of exercise. I think that there will be a gradual increase to begin with, but as the body has to work harder I believe that the heart will increase at a faster rate. When the exercise is complete I think that the heart rate will gradually decrease back to the resting pulse rate. I also think that a lot of energy will be used up as the exercise takes place, resulting in further increase. If the body is unable to continue aerobic respiration, anaerobic respiration will take place. This results in lactic acid being formed. Finally, the CO2 levels would also rise which would also contribute to the heart rate increasing. I also predict that my first set of step - ups will produce slightly higher results than the following two. This is because although I will have a five - minute break between each set, I will be more tired than at first. Results Pulse rate (resting) Set no. ...read more.

Conclusion

which are used up in respiration in the mitochondria within cells. Glucose + Oxygen Carbon Dioxide + Water + Energy Respiration produces energy and this is used for metabolism, muscle contraction, maintenance of temperature and moving materials across the cell (active transport). Respiration also needs oxygen, which comes from increasing the rate and depth of breathing. This causes more oxygen to be taken in by the lungs and release more carbon dioxide as the waste product. Conclusion: In summary, the pulse rate increases with exercise. This is what I had predicted and this is what has been proven from the experiment. I feel that the results I collected were fairly accurate. However, they were not exactly accurate because I could not have possible timed the minute perfectly, and it would have been very easy to make a mistake when counting the amount of step - ups I did, particularly because I was doing them at a very fast pace. There are many ways in which I could change the investigation because I could change the independent variables, such as the type of exercise, recovery time or the amount of time to perform the exercise. Overall I would say that the experiment went as well as I expected. ...read more.

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