• 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

    Is the MMR vaccination safe?

    5 star(s)

    Once in the blood stream the toxins would be able travel through the whole body and therefore possibly enter the brain. This would cause severe damage and possibly autism. Therefore Wakefield believes that MMR could cause or play a part in causing autism.

  2. Marked by a teacher

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

    4 star(s)

    0 120 9.5 3 8 1.5 6 - 150 11 4 8.5 2 7 - 180 12 6 9 3 7 - 210 13 8 9.5 3 7 - 240 14 10.5 10 5.5 - - 270 14.5 14 10.5 7 - - 300 14.5 15 10.5 9 - -

  1. 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.

  2. Human biology short notes

    in smoke destroy bacteria Prickling Involves the change in pH Vinegar is acidic and it lowers the pH Unsuitable for bacterial activity Why food must be eaten after cooked? Thorough cooking destroys bacteria present And must be eaten before recontamination occurs by files and air Sewage treatment 1.

  1. How does exercise affect your heart rate?

    For example if a ball was thrown in the air the initial force of the throw would take the ball up in the air but as it loses the energy the opposite force (gravity in this case) begins to take over and have an adverse affect on the ball bringing

  2. The effect of exercise on gas exchange and breathing

    The increase in breathing rate was great enough to be deemed statistically significant, as the difference in the median values between the control and during exercise is great enough to exclude the possibility that the difference is due to random sampling variability and the value of P=0.021 Graph showing average

  1. Factors Affecting the Development of Coronary Heart Disease.

    Q: Does alcohol decrease the risk of coronary heart disease? A: A glass or two of wine has been shown to increase HDL cholesterol levels (the good kind of cholesterol that helps clean out blood vessels). But more than two drinks a day can be harmful, raising blood pressure and throwing off cholesterol balance.

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

    the muscles. The process is very similar in terms of the exchange of oxygen and carbon dioxide only the other way round as when the blood passes through the muscle carbon dioxide is taken out and oxygen is taken in.

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