• 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)

    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. How does exercise affect your heart rate?

    I will do this by making sure that the person is always jogging on the spot before and during the experiment. We will also make sure that we measure the heart rate of the person straight after they have done the exercise otherwise the heart rate will gradually slow down and give an inaccurate result.

  1. 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

  2. How exercise affects heart rate

    You can see from the graph how much my heart rate increased. You can also see that 1 minute after exercise my heart rate goes lower then my resting rate. This could have been human error when counting or a natural occurrence.

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

    Then I started testing the volunteer's pulse rate using the pulse monitor. I carried out the following steps: Step 1- I wrapped the machine around the left wrist of the volunteer Step 2- I swtiched on the machine and allowed it to inflate.

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

    Dirt and dust flew as my pounding feet tore up the tranquil collage of dead leaves, the forest mutating into a green blur as I bolted past, fuelled by an insane mixture of terror and adrenaline. A lingering layer of mist made it difficult to determine where the jungle ended and the mountains began.

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