Used when working at submaximal (below maximum) effort
Aerobic energy system
1. Glucose breakdown
2. Pyruvate formation
3. Pyruvate enters mitochondria
4. Acetyl CoA formation
5. Krebs cycle
6. Electron transport chain
7. ATP resynthesis
Aerobic energy system
Can use carbohydrates, fats and proteins as fuel sources
Produces large amounts of ATP (38 per glucose molecule)
Aerobic glycolysis takes place in the sarcoplasm of the muscle cell
Enzyme PFK can speed up the breakdown of glucose, fat and protein in aerobic glycolysis
Krebs cycle
Takes place in the matrix of the mitochondria
Electron transport chain
Takes place in the cristae of the mitochondria
Beta oxidation
Process of breaking down fats to generate ATP
The aerobic energy system is used when working at submaximal (below maximum) effort, as it can produce large amounts of ATP but at a slower rate compared to the other energy systems
