Hormones of exercise
Catecholamines, insulin, glucagon, cortisol, growth hormone, ADH and aldosterone during exercise.
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Catecholamines: what is it?
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Adrenaline and noradrenaline, which speed up the heart and release glucose and fatty acids.
They rise from the start of exercise.
Why does insulin fall while muscles use much glucose?
- Contraction brings glucose in without insulin, and its fall lets the liver release glucose
- Insulin is toxic in exercise
- The pancreas stops
- Muscle refuses glucose
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Contraction brings glucose in without insulin, and its fall lets the liver release glucose
Active muscle takes up glucose on its own.
Insulin: what is it?
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The hormone driving glucose into cells and favouring storage.
It falls during exercise.
Glucagon: what is it?
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The hormone prompting the liver to release glucose.
It rises as exercise goes on.