energy systems

Question 1

what are the 3 energy systems used in the body?

Answer 1

1. ATP-PC energy system
2. Lactic Acid energy system
3. Aerobic energy system

Question 2

describe the features of the ATP-PC energy system

Answer 2

• no oxygen required
• main source of energy for first 10 seconds
• fuel source: creatine phosphate
• no by products
• fatigues quickly due to depletion of ATP-PC
• used for power based activity

Question 3

describe the features of the lactic acid energy system

Answer 3

• no oxygen required
• main source of energy for up to 2 minutes
• fuel source: carbohydrates
• by products: lactic acid
• fatigues due to build up of lactic acid
• used for sprint endurance

Question 4

describe the features of the aerobic energy system

Answer 4

• requires oxygen
• main source of energy for 2 minutes +
• fuel source: carbohydrates and fats
• by products: CO2, H2O adn heat
• never fatigues
• used for long duration events