# The Effect of Exercise on the Heart Rate

998 Words4 Pages
AIM: - the aim of this experiment is to find out what the effects of exercise are on the heart rate. And to record these results in various formats. VARIABLES: - * Type of exercise * Duration of exercise * Intensity of exercise * Stage of respiration * Age of the person exercising * level of fitness and recovery rate * gender of candidate * temperature * amount of recovery time KEY VARIABLE: - The variable that I will be using is the duration of exercise, this is because it is easy to measure against any candidate and get a correct accurate reading from it. If I chose the type of exercise I will get readings that might not be correct because some types of exercises are common to people and probably not have an effect on heart rate e.g. walking 30 seconds . When we are selective with the type of candidate, we cant just look at one variable if we want it to be a fair test because if we just look at age, all the other variables should be kept equal, it is not possible for two people to be of the same or identical physical fitness and therefore some exercise might not have an effect on these people, giving a false impression of heart rate when a very fit person may take a long time to work into hard pumping. To combat this in my experiment I will do the experiment on myself, timing the exercise at four different duration's. PREDICTIONS · I predict that my heart rate will increase during exercise because my muscle being used will need a higher supply of oxygen, which is carried in the blood, therefore my heart should pump faster to deliver for the demand of oxygen. · I predict that my maximum heart rate will be around 205 BPM, this is because to work out maximum heart rate you can roughly calculate 220, minus your age.