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

Investigate the effect exercise has on pulse rate.

Extracts from this document...

Introduction

An investigation to see how exercise affects Pulse rate Task- to investigate the effect exercise has on pulse rate Key Factors * The length that you exercise * The intensity that you exercise * Mood and state of mind * Fitness levels * Resting pulse rate * Health * Diet * Environment (body temp) I have chosen to investigate the length that you exercise for. Prediction I predict that the longer you exercise for the higher my pulse rate will increase o, as it does this I think that it will reach a peak rate and the become steady. I do not think that it will carry on increasing as the length of exercise does after a certain stage. This is how I think my graph will look. The reason that I think the length of exercise will affect my pulse rate is to do with the muscles on my body contracting so that I can do this exercise. The more that I exercise for the more energy that my muscles need so they can contract, therefore the less exercise the less energy that they will need. The way that they are able to this is by the release of energy in the muscle cells they are respiring aerobically, this is the release of energy from the breakdown of glucose by combining it with oxygen inside living cells (the energy is contained within the glucose molecules) Each muscle cell needs a supply of oxygen and a supply of glucose, and they all need to get rid of the waste products water and carbon dioxide. ...read more.

Middle

If my exercise in this investigation goes on for too long then I would begin to feel fatigued and result in an oxygen debt, this is due to a lactic acid built up and not enough oxygen reaching the muscle cells. This causes my muscles to stop contracting efficiently. It only produces one twentieth as much energy as aerobic respiration but does this much quicker over a shorter period of time. Glucose --> lactic acid + a bit of energy Plan The apparatus I will use are: * A skipping rope * A stop clock * Trainers I will begin my investigation by getting a friend to take my pulse rate at resting, to do this I will use my first and second finger and not my thumb as it has its own pulse and could affect the accuracy of my reading. This will be done so that after each period of time I do, I will know when it is suitable to do the next length of exercise. Otherwise it would not be a fair test. Next I will skip consistently for 1min the rest and skip for two minutes. I will then repeat this for the consecutive numbers until I am skipping for 5 minutes. It may not be very accurate if my friend takes my pulse rate for 1min each time because the beats per minute might decrease by the end. Therefore I will get her to count them for 30 seconds and then double the result, this may prove to result in more reliable results. ...read more.

Conclusion

Also when my friend took my pulse rate at each interval, it is possible that she may have missed out beats, especially when it got to the longer times such as 5.5 minutes. This also could have affected my results. I did keep all the other key factors the same though so there was not anything that could have made it an unfair test. I think that to overcome the problem of not being able to know exactly how intense I was exercising, it may have been a lot more accurate to have used a piece of equipment from a gym, such as a walking machine, this would have guaranteed that I was exercising with the same intensity each time. With the problem of taking my pulse rate I think that I could use a pulse monitor which is specialised in doing this, that would have really given better readings. To look further into this key factor, I could try doing the experiment with different types of exercise. Then I could have found an average from them all to draw a very accurate conclusion about the relationship between length of exercise and pulse rate. I could also take my pulse rate with specialised equipment in different places on the body such a chest and wrist. An obvious improvement on this investigation would be to have repeated it three times and then found an average. This would have meant that any anomalous results could have been not included in the average. Repetitions increased the reliability of my results. ...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

    Is the MMR vaccination safe?

    5 star(s)

    licensed in the UK, they do not overload the child's immune system, they are less practical and there is a greater risk of incomplete immunization, that the combine MMR is the safest option. What about mercury in vaccinations? A form of the very toxic metal mercury is found in some vaccines.

  2. Marked by a teacher

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

    4 star(s)

    * I will make sure that the bung is fully compressed into the conical flask, so that each time the reading begins at zero. This will help me to avoid any errors whilst taking readings. * If any spillage or accident occurs I will make sure that it is cleaned and washed straight away.

  1. Marked by a teacher

    Synoptic Biology Essay - "The transport of oxygen from air in the alveoli of ...

    3 star(s)

    Its function is to transport oxygen around the body of many animals; each haem group has one iron molecule within it, and so can therefore only combine with one molecule of oxygen. It can combine with haemoglobin reversibly to form oxyhaemoglobin.

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

    I will use this test because I feel it is the most appropriate statistical test to use to analyse my particular data. The test will give a clear conclusion and can be illustrated in the form of a graph to show the significance of the results.

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

    If it gets below about 35oC, we die of hypothermia. The temperature range over which all our bodily functions work properly is very narrow, and so the control of body temperature must be efficient and precise. It is important that: Heat gained by body = Heat lost by body Much

  2. Human biology short notes

    and sneezing Prevention and Control * Avoid overcrowded areas /Good ventilation * Isolate patient * Vaccination * Careful nursing (Hospital care) Treatment * NONE Diseases caused by Fungi Athlete's Foot Causative organism * Tinea Ring Worm (Parasite) Grows in moist conditions on the surface if the skin between toes How

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

    I have also learned that there is a certain amount of recovery time for example if your exercise is long then it would be long to recover but if your exercise is short the quicker your recovery rate. The pattern in my results shows that as the exercise increases my pulse rate will increase; also my breathing would be faster.

  2. The effect of exercise on gas exchange and breathing

    The alveoli do not contain any muscle fibres as these would slow diffusion, meaning lung tissue on its own can't contract. Instead connective tissues between the cells contain large amounts of elastin fibres, which create elastic recoil when the lung is stretched.

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