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To find out how different exercises affect your pulse rate.

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Introduction

Aim: To find out how different exercises affect your pulse rate Prediction: I believe that the more strenuous the activity, the higher the pulse rate will rise. The pulse is a measurement of how fast your heart pumps. In exercise, the muscles of your body need more oxygen and glucose for respiration and so you breathe faster. The equation of respiration is: Glucose + oxygen Carbon dioxide + water + ATP C6H12O6 + 6O2 6CO2 + 6H20 + ATP More strenuous exercise requires more Oxygen to keep the body going for longer and harder. Therefore, your heart needs to beat faster to get the oxygen around the body, also increasing pulse rate. This oxygen is used to make energy from glucose which is used to make your muscles contract and work harder, like running. ...read more.

Middle

When you have finished the exercise, find your pulse and with the stopwatch time your pulse for 6 seconds. Multiply this by 10 and record it in your results table. Now, rest for a minute before continuing to exercise. Repeat the above process for the remaining exercises. Also, remember to include the 1 minute rest after each pulse recorded. Record all of your results in your table to see the pulse rates for the different exercises. Results: Exercise Pulse rate (per 6 secs) Pulse rate (per min) Resting 7 70 Walking 8 80 Sit ups 10 100 Jogging 11 110 Skipping 11 110 Press ups 12 120 Sprinting 14 140 Graph: Conclusion: My prediction was correct. I stated "the more strenuous the activity, the higher the pulse rate will rise" Your pulse rate is the measure of your heartbeat per minute. ...read more.

Conclusion

You will continue to breathe hard until the oxygen debt is repaid. As a general rule the fitter you are the lower your resting pulse rate and the quicker you will recover after exercise. Evaluation: Our experiment was a fair test as we rested for a minute after each exercise. This ensured our oxygen levels would decrease to those of the resting period. Therefore each exercise was done after a rest. Also we used the same length to do the exercise in or the same amount (30). We started off with the least strenuous exercises to represent everyday life. We could improve the experiment by achieving more accurate results. We only held our pulse for 6 seconds and multiplying by 10 to give minute. This only gave us multiples of 10. We could have measured the pulse for the whole minute. Investigating Exercise By Amar Jessel 10H ...read more.

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