• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The aim of conducting this experiment is to know the effect of exercise on pulse rate by carrying out few exercises.

Extracts from this document...


Investigating Pulse Rate Aim: The aim of conducting this experiment is to know the effect of exercise on pulse rate by carrying out few exercises. Introduction When exercising or competing in sports, the body undertakes a number of changes. We breathe in heavier and faster, therefore our heart beats faster and our muscles stretch and therefore we sweat. These are all normal responses towards exercises, whether we work out regularly or only once in a while. To be frank, any type of exercise utilizes the help of the muscles. For example, running, swimming, weightlifting all uses different muscle groups to generate motion. In running and swimming, muscles are working to accelerate the body and keep it moving. In other words, exercise means muscle activity. In strenuous exercises, almost every system of the body either focuses its efforts on helping the muscles do their work effectively or it shuts down. For example, our heart beats faster during strenuous exercise so that it can pump blood to the muscles, and our stomach shuts down during strenuous exercise so that it does not waste energy that the muscles can use. When we carry out exercises, our muscles act like Electric Motors. Our muscles take in a source of energy and use it to generate force. An electric motor uses electricity to supply its energy. ...read more.


This is how respiration is linked to pulse rate. Athletes spend a great deal of time training. It allows their body to adapt its basic response to exercise and to improve athletic performance. Training can: * Make our muscles perform better. * Improve the efficiency of oxygen delivery to the working muscles. * Get the athlete adapted to the competition environment. Prediction From previous scientific knowledge, I predict that while carrying out the exercises, the body's temperature, breathing rate and the heart rate will increase. I predict this because when muscles are in use, they produce heat. It is this heat that affects the body's temperature. The body will also try to keep the original heat and will sweat to cool the body down. Muscles need oxygen and glucose to work properly. The formula for respiration tells us that glucose and oxygen are taken in and energy and carbon dioxide are given out. The muscles will need more oxygen and glucose as they work harder, therefore the breathing rate should rise to allow a bigger intake of the two. For this now larger intake the heart must pump this oxygen and glucose, situated in the blood, to the muscle cells more rapidly. This means that the heart rate will increase. The fitter the body, the slower the heart rate and breathing rate will increase. Shown below is cardiovascular system, where the blood travels to and from which part. ...read more.


Walking 73 Jogging 142 Sprinting 272 Star Jumps 160 Final Results Exercise Activity Mean Average (in Bpm) Stationary Average Rise in Heart Rate (in Bpm) Walking 72 69.50 Jogging 144 69.50 Sprinting 274 69.50 Star Jumps 158 69.50 Conclusion My results agree with my prediction which I had guessed before carrying out the experiment. As I had said in my prediction, as I carry out more exercises my pulse rate increases. From my results too, I can see that, the higher the blood and the oxygen were being pumped faster around my body. Evaluation I believe that my experiment was successful and I achieved the results that I had desired. I think I could have made my experiment more accurate and well accomplished by employing people in my group. Overall my results were accurate as I checked them from the people of the other group. I think I had used accurate equipment and there weren't any strange results I achieved. While conducting my experiment I think there weren't any design error but there could have been some human and equipment errors such as: * While I was measuring my pulse rate, I think I had not measured it properly as I was not able to get the Pulse Stick 2 to zero. But at the end I did make it to zero even though, I can't remember so! * Lastly, I think I measured one of the resting heart rate incorrectly which would have made my experiment inaccurate. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. Marked by a teacher

    The effect of different sugar substrates on the rate of yeast respiration

    4 star(s)

    7.5 - 210 12 6 10 5 7.5 - 240 12.5 7.5 11 7 - - 270 13.5 9 12 9.5 - - 300 14 13 12 12 - - 330 14 15.5 12 13 - - 360 14 16.5 - 14 - - 390 - 18 - 14 -

  2. Marked by a teacher

    Investigate the effect of altitude training on the density of blood.

    4 star(s)

    Because two Acetyl Coenzyme A molecules are produced from each glucose molecule, the cycle must be completed twice to process each glucose. At the end of each turn of the cycle, the four-carbon oxaloacetate is left. Only one molecule of ATP is produced directly by this stage.

  1. An experiment to investigate the rate of anaerobic respiration of yeast in various respiratory ...

    Null Hypothesis "There will be no significant difference between the volumes of carbon dioxide produced in each of the four respiratory substrates." Glucose (at 12 minutes) x x2 5.4 29.16 5.1 26.01 4.9 24.01 5.2 27.04 5.5 30.25 5.1 26.01 4.8 23.04 5.2 27.04 5.5 30.25 4.9 24.01 ?x=51.6 ?x2=266.82

  2. To investigate how the heart rate and breathing rate increase with exercise.Scientific KnowledgeAerobic respiration ...

    35 98 * 60 40 130 When I did my preliminary work I watched other people doing the same sort of experiment as me and they were not allowing rest time. They were doing the exercise and then measuring their heart rate but then instead of allowing the body to recover they would go onto the next exercise.

  1. How does strenuous exercise affect your pulse rate and breathing?

    We breathe in heavier and faster therefore our heartbeats faster and our muscles stretch and therefore we sweat. These are all normal responses towards exercises whether we work out normally or once a while. When we carry out exercises our muscles act like electric motors.

  2. The effect of exercise on gas exchange and breathing

    Similarly if the levels of PCO2 in the plasma drop then ventilation slows until CO2 accumulates bringing the levels back up to normal. This reflex is very sensitive and increasing the arterial PCO2 by 1mmHg will stimulate an increase in the ventilation by about 3L per minute.

  1. Stem Cell Research

    Therefore, in regards to research and treatments, embryonic stem cells will be more useful in this case, as they are not limited to the cells they can form. A disadvantage of using adult stem cells is the difficulty in culturing them compared to the culturing of embryonic stem cells.

  2. Should the cloning of humans be allowed?

    13 All these problems may be down to errors that occur during the somatic cell nuclear transfer process, especially problems with the process in which particular mammalian genes are switched off, depending on whether the genes were inherited from the mother or father (Imprinting).

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work