Energy Systems Flashcards
What are the 3 energy systems used by the body?
- ATP-PC (Phosphagen)
- Anaerobic Glycolysis (lactic acid system)
- Aerobic System
What system is used during high intensity, short duration exercise?
ATP-PC system
What type of energy does the ATP-PC system provide?
rapid and immediate energy
What system provides energy for muscle contraction for up to 15 seconds?
ATP-PC system
Where are ATP and PC stored?
In the myofibril of the contractile muscle
Why can the ATP-PC (phosphagen) system provide the most rapidly available ATP?
Because the ATP and PC are stored directly in the muscle for ready use. The system does not have to go through a long series of chemical reactions either.
How long can the ATP-PC system supply energy for during exercise?
15 seconds
What is the end product of anaerobic glycolysis?
Lactic acid
What system provides energy for muscle contractions for up to 30-40 seconds?
Anaerobic glycolysis
What form of macronutrients is used by anaerobic glycolysis to generate energy?
Carbohydrates (glucose and glycogen)
What system converts glycogen to glucose and thereby releases ATP?
Anaerobic glycolysis
How long can anaerobic glycolysis supply energy for during exercise?
30-40 seconds
What energy system is used for low intensity, long duration exercise?
Aerobic system
What energy system produces the most ATP?
Aerobic system
What is necessary for the aerobic system to work?
oxygen
