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The effects of exercise on heart rate.

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Biology Coursework The effects of exercise on heart rate. Introduction: This experiment is to investigate the effects of exercise on heart rate. In my experiment which I will devise I will have independent variables which I will be able to change without affecting the other variables which are the constant variable and the dependant variable which I will measure. Safety will be an important factor at all time and all actions will be taken to avoid accidents. Method: I will be using a running machine to do my exercise on. I will be wearing a heart rate monitor which measures the beats per minute and sends a signal to the machine where the heart rate is displayed on the screen. ...read more.


I will use levels 5, 10, 12, 15 and 20. I will take measurements of my heart rate after each speed. A break will be taken in between each speed to allow my heart to return to the control (rest). This is the only independent variable. Constant variable: The constant variable is the variable which does not change, and is not affected by the independent variable. The constant variables in my experiment are; 1. Time - I will run for two minutes at each speed. 2. Temperature - the temperature will remain the same. 3. Equipment - I shall use the same equipment each time. ...read more.


I shall repeat this three times so that I end up with a wide range of results covering all ranges of heart rates. Then I will take an average of the results. I shall record the data in a table so that it is easy to view and understand. Safety: Safety will be an important factor throughout the experiment and I will take the following precautions: Ensure that circuit breaker clip is attached when on the machine, that all shoe laces are done up and all loose clothing is secured. The machine shall be checked to see if it is in running order and any problems will be reputed, and a sensible attitude will be maintained throughout. Speed Heart rate (bpm) Average Heart rate (bpm) 5 10 12 15 20 Biology Coursework Results table: ...read more.

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