homeostasis and sports - experiments measuring the effects of exercise on the body

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Aim 

To Investigate the effect of the game squash on the blood glucose level.

Hypothesis – blood glucose level is usually affected by an activity or exertion such as a sport. Squash is a very exerting game and so a lot of glucose is required in providing energy while playing the game. The result is that the blood glucose shall fall. However homeostasis involves positive feedback and negative feedback. In this case , after a fall in the blood glucose level, positive feedback shall work to regulate the blood glucose level , by breaking down glycogen in the liver to glucose. Therefore the original glucose level shall be attained. However blood glucose level can also be influenced by the type of food that an individual has taken preceding the test.this then determines whether positive feedback or negative feedback shall occur

Apparatus

  • A Glucometer kit
  • Squash rackets
  • Squash balls
  • Dettol
  • Cotton wool
  • Stopwatch

Procedure

  1. samples of blood of 2 volunteers were obtained using a sterilised lancets
  2. The blood sample of an individual was  then placed on the film that was provided by the glucometer kit
  3. The film was inserted in the glucometer slot and  the blood glucose level value was  read off the screen and recorded
  4. step 2 and 3 were repeated for the second volunteer
  5. Afterwards, the game squash was started, and immediately the stopwatch too
  6. the game was played for one and a quarter hours
  7. At the end of the game, the blood glucose level was checked again and the readings were recorded on a table .

Data collection

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Data Processing and Presentation.

                              Positive feed back

                        (use up of glucose)

                                                                                                                                                                                                                                                                                                                                                                                                

High blood glucose level                                      low blood glucose level

                                  Negative feedback

                        (break down of glycogen)

Conclusion and Evaluation

The hypothesis was proved to be true. Since volunteer 1 had a glucose rich breakfast of dates and honey, he had a high blood glucose level, which ...

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