Energy Systems in Athletic Performance

The video tutorial by Jason from Activated discusses the interplay of energy systems during a 400m race. Initially, the ATP CP system is predominant, using creatine phosphate as the fuel source. As the race progresses and CP stores deplete, anaerobic glycolysis takes over, using glycogen and producing lactate. Eventually, the aerobic system becomes the main ATP supplier as oxygen uptake increases. The video concludes by summarizing the roles of each energy system throughout the race.

What is the primary energy system used at the start of a 400m race?

• Aerobic System

• Anaerobic Glycolysis

• ATP-CP System

• Lactic Acid System

Which fuel source is used by the ATP-CP system?

• Glucose

• Lactate

• Fatty Acids

• Creatine Phosphate

What happens to CP stores approximately 7 seconds into the race?

• They start depleting rapidly

• They are fully replenished

• They are not used

• They remain constant

Which energy system becomes predominant after CP stores are depleted?

• Phosphagen System

• ATP-CP System

• Anaerobic Glycolysis

• Aerobic System

What is the main byproduct of anaerobic glycolysis?

• Lactate and Hydrogen Ions

• Carbon Dioxide

• Water

• Oxygen

At what point does the aerobic system become the main supplier of ATP?

• At the start of the race

• Around 7 seconds

• Around 30 seconds

• At the end of the race

Which fuel source is primarily used by the aerobic system during the race?

• Fatty Acids

• Glycogen

• Creatine Phosphate

• Protein

What is the main reason fats are not a significant fuel source during the race?

• They require a long series of reactions to break down

• They are not stored in muscles

• They produce too much ATP

• They are not available in the body

Which energy system supplies the most ATP over the entire duration of the 400m race?

• Aerobic System

• Lactic Acid System

• Anaerobic Glycolysis

• ATP-CP System

What is the main difference between asking which energy system is predominant at a point in time versus over the entire race?

• The predominant system is determined by the athlete's speed

• The predominant system is irrelevant

• The predominant system changes over time

• The predominant system is always the same