• 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...

Introduction

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.

Middle

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.

Conclusion

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)

    It is impossible to get identical people but if all these variations were as constant as possible, the experiment would be more reliable. This is because each of these factors affects heart rate and changes to it due to exercise.

  2. How does exercise affect your heart rate?

    To keep this experiment fair I will control and keep the same all the other variables that I can find in this experiment. I will control the type and speed of the exercises done because different exercises may require more energy and so affecting the heart rate result gained and thus giving inaccurate results.

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

    148 92 80 68 64 TJ Standing 76 156 108 96 84 80 15 Sitting 76 148 108 96 96 84 M Laying 64 148 80 76 72 68 Colin Standing 76 144 108 104 100 92 15 Sitting 68 148 108 96 80 76 M Laying 64 88 76

  2. How exercise affects heart rate

    Heart rate after 2 minutes of exercise (BPM) Heart rate 1 minute after exercise (BPM) Heart rate 2 minuets after exercise (BPM) 69.3 101 62 68 Conclusion: As I stated in my prediction my heart rate did increase after exercise. I know that this was because aerobic respiration was happening more frequently and therefore my muscles needed more oxygen, carried in the blood, supplied to them.

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

    There they stood, nature's skyscrapers, towering high above everything, a majestic beauty beyond my reach. I had survived my first night on the island curled up in a ball on the beach, starving and thirsty. In an attempt to organise myself, I had unpacked my knapsack and planned the day ahead.

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

    This process is commonly refered to as paying off oxygen debt. I decided to investigate the effects of exercise on blood sugar level and pulse rate. I will be using all the above-mentioned information to relate the two factors and prove my hypothesis.

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