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

How exercise affects pulse rate.

Extracts from this document...


How exercise affects pulse rate Planning the experiment What variable are you going to use? I am going to investigate how exercise effects my pulse rate. Make a prediction about how your variable will affect the results of the experiment. I predict that my pulse rate will increase as I do more exercise. Give a scientific reason for your prediction. The amount of exercise a person does will effect the pulse rate. For example, more exercise means more movement so more energy will be needed. In order to get more energy; respiration needs to take place at a faster rate. More oxygen is used so more carbon dioxide is produced. Carbon dioxide is a waste product and it must be removed, as it is a toxin. Because of the extra carbon dioxide being produced, blood is pumped around the body faster in order to transport it. This process will give you a faster pulse rate. You will also get cramp if lactic acid is produced due to not enough oxygen being taken in. ...read more.


"h Repeat experiment twice. How will you make it a fair test? What will I change? What will I keep the same? "h I will change the amount of time doing exercise. "h I will use the same step during the experiment. "h I will always take my own pulse rate and I will make sure that I start my exercise using the same starting pulse rate. "h I will get the same person to take the time while I exercise. How will you make sure that your experiment is safe? I will make sure that I am wearing trainers, as otherwise I will hurt my ankles. I will also make sure that the step is on flat floor. Results Amount of time (min) Pulse rate 1 (BPM) Pulse rate 2 (BPM) Average (BPM) Resting pulse 70 72 71 1 100 110 105 2 120 125 123 3 140 139 140 4 170 157 164 5 190 183 187 Analysis and conclusions Did you observe any trends or patterns in your results? ...read more.


This is known as respiration and it is the process of converting glucose to energy. Evaluation Do you think your experiment was a fair one? I do think that my experiment was fair. I repeated the experiment twice and in between I always let my pulse rate return to normal. I kept the step at the same height and the same person took the time. Did all of your results fit the general pattern or trend? Yes, all of my results fit into the general pattern. Do you think your results were reliable? I think that my results are reliable as I followed my plan. I also made sure that it was a fair test. The same person took the time for me and I done the exercise at a constant speed. Was you procedure suitable? Could you improve your experiment? I feel that my procedure was suitable because I thought about my plan and followed it carefully. I also repeated my experiment twice to make sure that my results were not anomalous. I could improve my experiment by making sure that when I repeat the experiment, my pulse rate is the same as the first I done it. This would give me more accurate 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. An experiment to investigate the rate of anaerobic respiration of yeast in various respiratory ...

    There is a significant difference between the means at the 5% level of probability. Hence there is a significant difference between the volumes of CO2 produced by the yeast in the different respiratory substrates. Therefore these results are not due to chance and so must have a biological explanation.

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

    In this time I will allow my pulse to go down to its resting heart rate before continuing to the next level of intensity and the same with my breathing rate. The intensity will be * 6 steps a minute * 8 steps a minute * 12 steps a minute

  1. The effect of exercise on gas exchange and breathing

    This loosens the structure by breaking some of the salt bridges, making it easier for further oxygen molecules to bind. The same happens when oxygen is released in tissues. The removal of one oxygen molecule makes it easier for the other oxygen molecules to be released.

  2. Effects of Exercise on Blood Sugar Level and Pulse Rate.

    - The finger of volunteer may be contaminated so I will use an alcohol swab to wipe the finger before pricking it. - I will allow the alcohol to dry before pricking the finger otherwise alcohol may get mixed with blood and may affect the final reading.

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

    Anaerobic respiration occurs when muscle cells do not receive enough oxygen to produce the energy the energy needed. This occurs during vigorous exercises. The heart can't pump enough oxygenated blood to the muscles when they become exhausted. The heart rate increases in an attempt to send more oxygen to the muscles but when it fails anaerobic respiration takes place.

  2. The effect of Exercise on Pulse rate

    these capillaries the pressure is quite low as the energy has been used to push them through. As the pressure is so low the walls do not need to be very thick to withstand it, but they do have valves in them to stop the blood from flowing backwards on it's way back to the heart.

  1. The effect of exercise on gas

    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.

  2. How does exercise affect the pulse rate?

    So the veins are of low pressure as they are in no rush to bring the blood back. But they are bringing the waste materials we have produced(co2 h2o) back. Athletes train at high altitudes because I makes there red blood cells carry more oxygen, so they can keep going for longer.

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