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
Conclusion
The results seem and accurate and have proven my prediction to be correct. The results prove that the longer you exercise the higher your heart rate as energy is being burnt through respiration which gives your muscles energy from sugar and oxygen while exercising, this obviously needs to increase when you exercise for longer periods of time as your muscles need more energy to work longer
Evaluation
My results were quite accurate although there was one anomalous point which didn’t quite follow the straight line pattern (circled on the graph and table) this may because I rested to long and didn’t start again on time. Because this was only found out from my averages I couldn’t repeat it although if I had more time I would have liked to. If I could improve this experiment I would use a more intense exercise like running on a treadmill as I think this would be more accurate as you can keep the intensity the exact same for each period of exercise
