Fuels for ATP resynthesis Flashcards
What is phosphocreatine used for?
To resynthesises ATP in the first 10 seconds of intense exercise
What are the 4 food groups that give fuel?
- Phosphocreatine (PCr)
- Glycogen (stored), Glucose (Blood)
- Fats/triglycerides (fatty acids)
- Proteins (amino acids)
Where is phosphocreatine stored?
In the muscle cell alongside ATP for rapid access
Are PCr stores limited or unlimited?
Limited
What system is PCr the main energy source in?
The ATP-PC system
Where is phosphocreatine found?
Red meat
Where is glycogen stored
In the muscles and liver (back up)
What needs to occur before glycogen can resynthesise ATP?
Needs to be broken down into glucose
When can glycogen be used?
In both the presence or absence of oxygen (anaerobic or aerobic)
How long can glucose/glycogen be used for anaerobically?
60 seconds - 3 mins
Why is there such a large timeframe for anaerobic work
As it depends on the intensity of exercise
What are the dietary sources of glucose/glycogen?
Complex carbs
Where is glucose found?
In the blood - it is a blood sugar
What main system is glycogen the main source of energy for?
The Anaerobic Glycolytic system
What are triglycerides?
Muscular stores of fat
