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The Effects of Exercise on Heartbeat, and the Assessment of Cardio-Vascular Fitness

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Introduction

The Effects of Exercise on Heartbeat, and the Assessment of Cardio-Vascular Fitness SAFETY Do Not Run With Injuries, You Could Only Make Them Worse! Be Careful Not To Injure Yourself Whilst Running! Introduction In this experiment I intend to examine the effects of exercise on heartbeat and Cardio-Vascular fitness (fitness of the heart and lungs), including pulse how long it takes to recover from a vigorous training session a 'Bleep Test'. The measurements will range in a class of 22 boys who all have a similar diet, same age, near enough same exercise regimes; so this is not an ideal experiment because all the boys are from similar background. But to make it an accurate test I will need some sort of exercise that pushes the body (exhaustion exercise) so I chose to do the 'Bleep Test', which is a tape that plays beeps and the person has to run a 20m. track within the bleep. The aims of the experiment is to measure the systolic and diastolic blood pressures and heartbeat rate at rest, the recovery time after an exhaustion type exercise and the exhaustion type exercise is the 'Bleep Test'. Prediction I predict in the experiment that every ones heart rate will increase by a lot, maybe about 150% in some cases. This is because when someone exercises their muscles need more oxygen to be supplied to their muscles because they are now working a lot harder so their oxygen demand is higher. The only way you can keep going is that if your heart rate goes up to supply the greater demand of oxygen to the muscles, when the heart rate goes up this means the heart pumps more times in a minute and so a greater volume of blood is pumped round the body. When your heart reaches its max heart rate it can only last for a few minutes, before the muscles demand more oxygen than the heart can provide. ...read more.

Middle

I have taken these into account because they are all relevant to the experiment because they can determine the level of fitness the pupil is at. If the pupil is a rugby player they do a lot of running around and get fit exercises during their practices, however if the pupil is not a rugby player he is usually less fit because the other games options are less demanding on the heart and lungs so they don't get trained up as much. The rugby players heart should get bigger with all the training they do so the heart can pump more blood around the body and so more oxygen, because of this the body can recover quicker from exercise. If the pupil is a border they are on the same diet of food at school for up to weeks on end with only about 2 different courses to choose from at meal times, however if the pupil is a dayboy he/she can go home and have a different meal or could eat a lot of sweets when at home at become a little less healthier. If the pupil is a border they are on a similar diet because the choice is little at meal times, and the food has probably got the same amount of energy in it so if they are both on the rugby team and borders they should be of similar fitness. The pupils can be at different ages which is either a disadvantage or an advantage depending on how old you are, if a 20 year old was running against a 15 year old it is in the 20 year olds favour to win because his muscles are more developed because he has finished puberty and is now a man with much stronger muscles. Jeffrey Zhang is now 16 going on 17 in the summer term and Jose Gutierrez is 14 but only turned so in January of 2002, so Jeffrey could have an advantage of age because he could have started puberty earlier. ...read more.

Conclusion

this I would put everyone in the same types of clothes and shoes so they all had they same access to move ability. Also I noticed form when I analysed the results that only a small number of people participated in the experiment and they came from a small community (from the same school), were of the same sex and near enough of the same age but all being in the same class. So to get the best results to assess cardio-vascular fitness would be to test a larger number of people, half and half with the sex's, same ages and different types of people e.g. fishermen, rugby players (with a similar fitness regime), footballers and ballet dancers; this would be so I could get as a diverse set of results as I possibly could. Also in the experiment the track on which we ran on was not 20 metres as it should have been but 22. So we had to run an extra 2 metres on every length, this would tire us more quickly and so we would have to drop out of the experiment at an earlier stage than we would have done if it was 20 metres long. If we ran a track that was 2 metres short (18) we would run less than someone who had to run 22 and so the person running the 18 metre track would be able to run on for a longer period of time because he is having to do less running on every length. But although I could have made my results a lot better by using different techniques, my results that I did get from the experiment I did do are accurate and reliable enough to make a relevant comment about there credibility to the aim of the experiment. This experiment did go well and in hope i have made a decent assessment on the effect of exercise on cardio-vascular fitness and the rate of recovery. ?? ?? ?? ?? David Greene ...read more.

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