Energy Systems - ENERGY SYSTEMS Flashcards
When ATP is depleted, what does the body do?
The next energy system becomes dominant and there is an increased reliance on the anaerobic glycolysis system to supply ATP
What are the 3 energy systems?
- ATP-PC system
- Anaerobic glycolysis or lactic acid system
- Aerobic energy system
What does the ATP-PC system do?
It is immediately available, is the simplest and quickest system for breaking down PC (phosphocreating) to create ATP and is stored in muscle cells.
NO OXYGEN NEEDED
What is the anaerobic glycolysis system?
Involves the complete breakdown of carbs
NO OXYGEN NEEDED
What is the aerobic energy system?
Uses oxygen and is by far the most powerful energy system.
Fuel = carbs
Breakdown of glucose
What is the other name for the ATP-PC system?
Alactacid or phosphocreatine system
What is the other name for the anaerobic glycolysis system?
Lactic acid or lactacid system
What is the other name for the aerobic energy system?
Aerobic glycolysis or oxygen system
Define aerobic
Air needed
Define anaerobic
No air needed
Name the relevant energy system for aerobic and anaerobic
Aerobic = aerobic system Anaerobic = ATP-PC system, Anaerobic glycolysis system
What 2 things determine which energy system is predominantly used?
I’d oxygen is needed or not
Intensity
Using intensity and duration, describe each energy system
ATP-PC
- high intensity, short duration
Anaerobic glycolysis
- high intensity, mid duration
Aerobic
- low intensity, long duration
Do energy systems work independently?
No. All three energy systems ‘turn on’ at the start of exercise and work together
What is the role of ATP?
To release energy for muscular contraction
