pe prac flashcards

What energy system is predominantly used in this prac?

• ATP-PC system (dominant)

• Some contribution from anaerobic glycolysis in later sprints as CP depletes

What fuel is used in the phosphate recovery test?

• Creatine phosphate (CP)

• Small amount of glycogen in later efforts

What happens to performance across the 8 sprints?

• Distance/cones reached decreases over time

• Due to incomplete CP resynthesis and fatigue

What type of recovery is used in the prac and why?

• Passive recovery (standing/walking back)

• Best for CP resynthesis

What happens during the prac recovery?

• CP stores are partially replenished

• Requires oxygen (aerobic system)

• Not fully restored in 25 seconds → performance declines

How do energy systems interact in this prac test?

• ATP-PC dominant at start

• Anaerobic glycolysis increases as CP depletes

• Aerobic system helps recovery (CP resynthesis)

ATP-PC system characteristics

• Fuel: Creatine phosphate (CP)

• Rate of ATP production: VERY FAST

• Yield of ATP: VERY LOW (1 ATP per CP)

• Duration: 0–10 seconds

• By-products: None

• Recovery: Passive

Anaerobic glycolysis characteristics (no o2)

• Fuel: Glucose/glycogen (carbohydrates)

• Rate of ATP production: FAST

• Yield of ATP: LOW–MODERATE (2–3 ATP per glucose)

• Duration: ~10–75 seconds

• By-products: Hydrogen ions (H⁺)

• Recovery: Active

Aerobic system characteristics

• Fuel: Carbohydrates, fats, proteins

• Rate of ATP production: SLOW

• Yield of ATP: VERY HIGH (~36–38 ATP per glucose)

• Duration: Long duration (2+ minutes)

• By-products: Carbon dioxide + water

• Recovery: Active