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

The effect of exercise on the heart rate.

Extracts from this document...

Introduction

AT1 THE EFFECT OF EXERCISE ON THE HEART RATE Plan and Prediction: I will conduct an experiment accurately and suitably, which will give evidence to prove my prediction correct. Firstly I will carry out preliminary tests, which will tell me which exercise will raise the heart rate more and give the best results. The exercises I will test are: step-ups, skipping, sit-ups and jogging on the spot. To test these different exercises I will time each of the exercises for thirty seconds then measure the heart rate. I will repeat these preliminary tests to ensure the results will be fair. Unit of exercise Heart rate after 30 seconds of exercise (bpm) 1 2 3 AVERAGE Jogging 116 120 124 120 Sit-ups 88 100 112 100 Skipping 136 112 96 115 Step-ups 84 92 80 85 These preliminary tests showed that jogging increased the heart rate the most and as long as it is kept at a constant pace the results should be accurate. This is the exercise I have chosen to do for the experiment. I will measure the resting heart rate of the person exercising by counting the number of beats per minute (bpm) in fifteen seconds and multiplying it by four. I will then take the bpm after the person has done thirty seconds of exercise, then again after forty and so on adding an amount of ten seconds each time up to ninety seconds. ...read more.

Middle

The platelets are another of the bodies defence mechanisms against germs, they clump together when a blood vessel I damaged and form a meshwork of fibres to produce a clot. Glucose is enters the body through eating carbohydrates. All carbohydrates, whether complex or simple, are digested in the body to form glucose, which is transported around the body via the blood and taken into cells to be converted into energy. Excess glucose is converted into glycogen, which is stored in the liver or in fat around the body. If the body needs more energy, glucagon converts the glycogen back into glucose. It is then released back into the bloodstream. During respiration oxygen is used to release energy from glucose. Energy is vital during exercise. In this case of exercising the respiration that will occur will be aerobic. Aerobic respiration is the release of energy from the breakdown of glucose by combining it with oxygen inside living cells. The equation is: Glucose + Oxygen ==> Carbon Dioxide + Water + Energy The glucose and energy are brought to the respiring cells by the bloodstream. The carbon dioxide is taken by the blood to the lungs, and exhaled. The water passes into the blood and is lost as sweat, moist breath and urine. The energy is used for muscle contraction, metabolism and maintaining temperature. ...read more.

Conclusion

For ultimate reliability instead of using a stopwatch to time the duration of exercise, and using your fingers to count the beats per minute on your neck I would use a heart monitor connected to a computer that would display the results in an on-going graph. This would allow the person to continue the exercise whilst the heart monitor records the heart rate instead of exercising for a short period of time then taking their pulse, allowing it to return to normal and starting again. I would also use a treadmill instead of jogging on the spot. This keeps the exercise at a constant rate and records the exact length of time, and occasionally the distance, the person exercising has done. To provide a more reliable way of testing my prediction I would widen my range of results. To do this I would lengthen the amount of time exercising to investigate what happens when the person exercising reaches a certain point and weather when they reach this point their heart rate no longer increases. I would display all of the data in a graph. The conclusion I have come to is valid as I know that although the evidence I have gathered is perhaps not as reliable as it could be, if I were to repeat this investigation I know which area's need improving and I would then be able to produce a better display of evidence. Jo Cunningham 10P2 ...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

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

    4 star(s)

    330 15 16 10.5 11 - - 360 15.5 16.5 - 12.5 - - 390 15.5 17 - 12.5 - - 420 15.5 17 - 12.5 - - 450 - 17 - - - - 480 - - - - - - 510 - - - - - - 540

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

    However, as with all laboratory based experiments, errors and limitations did arise which may have influenced my findings and therefore could have questioned the reliability of my conclusions. These errors and limitations were mainly due to the inaccuracy of equipment used and in the procedure adopted.

  1. Human biology short notes

    Enzymes are inactive Bacteria are unable to reproduce Salting/ Syrup Raises the osmotic potential of the food source Due to the steep concentration gradient water diffuses out of the bacteria Removes water from bacteria (dehydrates bacteria) Bacteria becomes inactive Smoking Food is suspended for some time over wood smoke Chemicals

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

    When looking back at the hypothesis, the basic principle was right. Although the guess for the position may not have been correct, it still stated that some positions would allow the RHR to recover faster than others which is what the research question was essentially asking.

  1. The process of gaseous exchange at the lungs and the muscles and the effect ...

    Some standard values for the volume and rate of ventilation are as follows: Depth (Volume/breath) Rate (Breaths/min) Rest 0.5 litres 15 Exercise 2.5 litres 50 (max) So during rest the total volume of air inspired/expired per minute at rest is 7.5 litres yet during exercise can go as high as 125 litres (approximately 16.5 times the amount achieved during rest).

  2. How does exercise affect your heart rate?

    and suggests why the line is curved and not straight suggesting the decline of the gradient of the line. This suggests that the relationship between the two factors is not that of a straight line (linear) but one of a parabolic curve which is one where in this case something

  1. The aim of the experiment is to find out the effect exercise has on ...

    This also relates to what was stated in my prediction, as what I originally predicted was correct. (From "Biology for Life" by M.B.V. Roberts). Evaluation From the experiment I obtained good results and I found the experiment most enjoyable. The apparatus was simple and easy to use and gave me reliable results.

  2. The effect of exercise on gas exchange and breathing

    The results here show a similar trend to the results for the tidal volume but the difference between the results is more marked. The standard error for is much larger for the during exercise result when compared to the control.

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