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Measuring Heart Rate Increase With Exercise.

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Introduction

Measuring Heart Rate Increase With Exercise. This experiment that I am about to do is an experiment to see how the heart rate increases during exercise. The exercise that I do will speed up your heart rate, because the more exercise that you do the higher your pulse will rise. I will measure the heart rate by placing two fingers on to my wrist then I will count the number of beats for 1 minute. The equipment that I will use is an accurate stopwatch, a large surface area and 4 people to conduct my experiment. I will take each persons pulse rate before and after because I need to know what their resting pulse is at a normal time. I will vary the time for each person to see what the change there is in his or her heart rate I think that the factors that will change the heart rate are the duration of the time that the person dose the exercise, because the longer the person does the exercise the faster the heart rate. I will limit the time for each person, for example one minute for one person one minute 30 sec for another etc. The safety precautions that I will take, is to make sure that no obstacles are there too fall over, no dangerous spillages, I'll make sure that the each person during exercise doesn't have any medical problems, and to make sure that they don't exert them selves, and pass out. ...read more.

Middle

As you can see from my results the pulse rate before and after did vary but on an average but on an average scale the normal pulse rate before were 70 beats per minute and the average pulse after was from 134-146 per minute. Results: Number of people Heart rate before Exercise 1 Heart rate After Exercise 1 Heart rate before Exercise 2 Heart rate After Exercise 2 Heart rate before Exercise 3 Heart rate After Exercise 3 Person 1 98 150 86 230 50 116 Person 2 54 135 54 150 65 101 Person 3 80 102 82 120 82 119 Obtaining evidence The measurements that I have made during my experiments were made accurately, with a stopwatch. When each person was conducting the experiment I made sure that they were in a large open space were there were no obstacles in their way. I analysed them whilst they were conducting the experiment, I made run continuously up and down. I made them run for 30 seconds, 1 minute, and 1 minute and 30 seconds, and each time I took a pulse before and after each experiment. Conclusion: I found out that when you conduct an experiment, that involves taking the pulse rate, you could come out with a number of results that can vary drastically or they could just vary a little. The pulse rate can also vary by the person ability such as if a person has a health problems, such as asthma or maybe a person could be slightly over weight or under weight. ...read more.

Conclusion

A delicate instrument, the electrocardiograph, which records the minutes electrical impulses given out by the muscle of the heart as they contract, can investigate the timing of the heartbeat in a man. As the auricles have not much work to do, their muscular coats are not much developed and the electrical impulses given out are small. The right ventricle has less work to do than the left lungs, whereas the left ventricle pumps blood throughout the rest of the body. Compared with those of the left ventricle, the walls of the right ventricle are thin, but not so thin as those of the auricles. The left ventricle has much the thickest walls, for it has the most work to do. During this experiment I found out that a number of factors could affect the human pulse. With the human the slightest increase in movement e.g. running can resort to our pulse increasing along with other factors such as breathing fast, health problems. During my experiment some of my subjects pulse rates became low as the physical demand for movement of a longer period of time i.e. 30 seconds 1 minute and 1 minute and 30 seconds. I think this was because, each time that they did the exercise their speed decreased because they were tired or still recuperating from the last exercise. I think that to make this experiment more accurate I could have repeated these experiments more to get better and more accurate results, and I could have used more people and varied the age difference, the gender and their physical ability of each person. ...read more.

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