Investigating the Effect of Exercise on Heart Rate

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Investigating the Effect of Exercise on Heart Rate Aim The aim of this experiment is to investigate how exercise affects heart rate. I am going to record my resting heart rate, then exercise for 30 seconds , then 1 minute and increase the period of exercise by 30 seconds until I am exercising for three minutes without stopping . I will does this twice and take an average Prediction I predict that my heart rate will increase as a result of exercise. I think that there will be a slight increase to begin with, but as the body has to work harder I think that the heart will then increase at a faster rate. This is because my body need s more oxygen because it is burning energy through respiration which gives you energy from sugar and oxygen and you need more of this for your muscles when you exercise. Sugar + oxygen =energy +oxygen+ carbon dioxide Compared to when I am resting I need more food and oxygen Variables I will change the periods of exercise, I will measure my pulse rate resting and after exercise and take an average. I will keep the exercise, step ups, the same. To keep it a fair test I will rest between each period of exercise to let my heart rate to return to my resting heart rate. Apparatus Timer, step Method Collect apparatus Record resting heart rate for 1 minute (arm, neck, temple, chest) Exercise for 30 seconds and record your heart rate Rest until your heart rate is as it was at resting Repeat this for each period of exercise increasing it y 30 seconds each time until your exercising for 3 minutes Do this experiment 3 times to get an average Results Time minutes 1st pulse bpm 2nd pulse 3rd pulse Average pulse 0 60 64 64 63 0.

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