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Some pupils investigated how `fit` some other pupils were. They decided to test the heart rate of a number of pupils while they were taking part in a `stepping activity`.

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Introduction

Some pupils investigated how `fit` some other pupils were. They decided to test the heart rate of a number of pupils while they were taking part in a `stepping activity`. Aims: To arrange pupils who took part in the exercise in order of fitness level. I will look at who is the fittest and see why, and also see if there are different fitness levels between girls and boys within the group. Method: The information that I have been given is that eight pupils, four of each sex took part in a stepping activity, their height and weight were recorded, the heart rate of all pupils before the activity, the heart rate of all pupils at regular intervals during the activity and the heart rate of all pupils 10 and 20 minutes after the activity. The way in which the pupils who carried out the investigation took the measure of heart rate was in the following way; each pupil in turn was connected to a BBC heart rate monitor and then asked to step up and down for ten minutes. Their heart rate was taken every 2 minutes. The pupils were then asked to rest. Their heart rate was taken again 10 and 20 minutes after the exercise had been completed. Background Information: There are many measures of fitness. ...read more.

Middle

So when the muscle develops the heart will pump more blood in each beat. This means that the heart can beat less frequently and still pump the same amount of blood. So the stronger the heart the fitter the person is. Now I am going to represent the information that I have been given in a series of graphs and charts so that I can analyze them and evaluate the procedure. Analysis: Graph number 1 shows the heart rate of all the pupils before, during and after the activity. A resting pulse is the pulse that you have when you are relaxing and not doing any exercise and doing your normal body functions. So when you compare the resting pulse of the pupils you notice a difference, this is because some pupils have stronger hearts. So low heart rate indicates strong cardiac muscles, which may be inferred that person is physically fit. Graph number 3 shows that the boy's average heart rate is higher than the girls; therefore I can assume that the heart muscle of the girls is stronger within this sample. During the exercise phase all the pupils' heart rate goes up because there is a greater demand for energy, which is met when the heart supplies blood carrying oxygen and glucose necessary for respiration. ...read more.

Conclusion

For strength they could have done some press ups. For speed they could have done a race. For suppleness they could have told the pupils to stretch themselves as much as they can. They also could have taken the pulse of the pupils at intervals of 2 all the way through the exercise till the pulse returns to the resting pulse instead of taking the pulse at intervals of 10 after the tenth minute. This way it would be easier to work the recovery time and the time would be more accurate. Also the sample size was not enough to support any conclusion that any sex is fitter than the other, therefore I would use a sample of at least 30 pupils of each sex. They should have got some more background information about the pupils and their health status. They could have done the exercise twice so the results are more reliable. The pulses taken were accurate because they connected the pupils to a BBC heart rate monitor. While some of the pulse rates appear to be anomalous, we can be sure of their accuracy due to the way they were recorded. Our interpretation of these is skewed as we have only 2 other data points to consider. These are discrete measurements determined by a wide range of continuous variables. On basing our conclusions upon these points we have to remember the underlying determining variation and that these factors have an influence on pulse rate. ?? ?? ?? ?? Hussein Almosawi ...read more.

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