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

How does exercise affect the heart rate?

Extracts from this document...


Task: how does exercise affect the heart rate? Introduction: The heart is a four chambered pumping muscle, it pumps oxygenated blood around the body, the oxygen is transported via the red blood cells to the muscles, where the oxygen is used as part of respiration (the creation of energy from glucose and oxygen). Our test is to find out how exercise affects the heart rate. We already know that as muscles are exercised they require more oxygen, this makes the heart beat quicker to pump extra blood around the body. You can tell how healthy a person is with how long it takes their resting heart rate (heart rate after no activity for around 10 minutes) to return to normal. The more the heart fills with blood the more the fibres of the heart stretch, this means the heart is more elasticised and can pump the blood round further with one beat. If the heart beats more effectively, it doesn't have to beat as often, meaning you get tired slower, recover quicker and overall, live for longer. ...read more.


To work out your target time, add together your 200m slow time, and half of your 200m sprint time. 11. Do this exercise at least 3 times, recording your heart rate at 1-minute intervals until it returns to your resting heart rate. Prediction: I predict that as we exercise for longer or harder, our pulse rate will rise and take longer to return to my resting heart rate (around 70 beats per minute). My breathing rate will quicken and become more laboured as my body requires the extra oxygen, and my muscles will begin to be ached and fatigued as they are exercised over time, making my performance level go down. Results: Exercise Test number: Heart rate after 1 min Heart rate after 2 min Heart rate after 3 min Heart rate after 4 min 200m gentle rowing 1. 2. 3. 90 84 82 84 80 78 80 76 75 74 70 70 200m moderate speed 1. 2. 3. 130 116 110 86 105 95 82 82 83 76 76 77 200m sprint rowing 1. ...read more.


I have therefore come to the conclusion that my heart rate recovers quicker when it rises to a higher rate, perhaps because the heart works harder to cool down when it is working extremely hard. Evaluation: I did not find this experiment scientifically sound at all, many things should be improved before making any definitely true conclusions from the experiment. Firstly the rowing machines, advanced as they are, did not take our heart rate during exercise, this meant that we A: had time to recover before taking our own heart rate, and B: we had to take the heart rate ourselves, giving a possibility of miscounting or being inaccurate with results, this could be remedied by either using rowing machines with built in heart rate sensors, or using a heart rate reader while exercising. Secondly the chances of us putting in the maximum effort possible isn't very likely, though driving us to reach target times was an effective way of making us work hard, we still could probably have worked harder, changing the rowing machines resistance settings would help us to achieve maximum effort input. ?? ?? ?? ?? Oliver Millington ...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

    Design an Experiment to show how exercise can affect Heart Rate in Humans.

    4 star(s)

    For example, a well-trained person has a lower heart rate compared to a person who is not as fit. One way to find out how consistent these factors were between different people is to check how close the resting heart rates are.

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

    Preferably left ring finger tip. Wait for one minute for alcohol to dry otherwise alcohol may get mixed with blood and will effect my reading. Step2 - Load the laucet with the needle and keep ready by pulling the sliding knob backwards.

  1. In this report I will hopefully prove that my hypothesis, which is; 'the harder ...

    If you are going to be exercising for more than a couple of minutes, your body needs to get oxygen to the muscles or the muscles will stop working. Just how much oxygen your muscles will use depends on two processes: getting blood to the muscles and extracting oxygen from the blood into the muscle tissue.

  2. How does exercise affect your heart rate?

    We will repeat this experiment for all three people 5 more times, advancing the exercise time 30 seconds every time and measuring the person's heart rate for 1 minute after they have completed the exercise. We will then repeat the experiment all over again for all three people to gain more reliable results.

  1. An Experiment To Find Out the Effect of Exercise on health and the heart ...

    To help me control this variable I could use a stop watch to record the total amount of time it took for the experiment to be completed. Another variable could be the time it will take me to measure the heart beat.

  2. Creative Writing : “You’re only a survivor when you’re rescued; until then, you’re a ...

    Every single sense in my body surged out of control. Petrifying terror crept through my veins as boiling blood pumped faster and faster through my frozen body. Seconds passed, cold sweat seeping between the fibres of my vest, and my watering eyes stinging and burning as I attempted to supply saliva to my parched throat.

  1. How exercise affects heart rate

    Trial run: I have done a trial run to help me plan my actual experiment as well and as fairly as possible. I am testing the same thing as in my actual experiment and will record my findings.

  2. Ideal Position to Recover Resting Heart Rate- Lab. Does the physical positioning of ...

    68 64 64 Sulaiman Standing 64 136 108 100 88 84 15 Sitting 68 116 104 84 72 64 M Laying 56 132 96 80 76 68 Paolo Standing 80 140 108 92 100 92 15 Sitting 68 144 116 104 96 96 M Laying 56 128 88 84 80

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