Bioenergetics - Substrate utilization and regulation - Carbohydrates

3 important questions on Bioenergetics - Substrate utilization and regulation - Carbohydrates

In what ways can carbohydrates be used for exercise?

- Glycogen reserve in the contracting muscles (15-18 g per kilogram)
- Glucose from the blood (100mg/100ml)
- Glycogen from the liver (50-90g)
- Glucose produced in the liver from lactate, pyruvate, glycerol.

Where are lipids found that can be used during exercise?

- Triglycerides in the muscle (20g/kg)
- Adipose tissue (15-20% of bodyweight)

EN-USWhat factors are responsible for increase of decrease of adipose tissue lipolysis?

EN-USThe sympathic nervous system and catecholamines increase lipolysis. But increased blood lactate and glucose loads decrease lipolysis.

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