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Marathon running is an aerobic activity. Many runners describe hitting a wall towards the end of...

Marathon running is an aerobic activity. Many runners describe hitting a wall towards the end of their race, where it becomes much more difficult to keep running. Knowing that muscle cells can only stockpile so much glucose and glycogen for, list and explain reasons why this ‘wall’ occurs.

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Yet there are stockpile of glucose and glycogen in the body but in a marathon, there is long race in which a vary lot of oxygen is requires by the body for aerobic respiration.

Continuous running leads to deficient of oxygen in the muscles of runner. This leads to start of anaerobic oxidation occurs in muscle which provide 2 ATP only. This ATP is very low as compared to aerobic ATP (38 ATP).

The runners which do not have efficient oxygen in muscle tissue; they hit the wall at the end of the race.

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