ATP Production, Rest & Exercise

What does the term "O₂ deficit" refer to in the context of oxygen uptake during exercise?

• The extra volume of oxygen that is used up immediately when exercise starts

• The extra volume of oxygen needed to restore all energetic systems after exercise

• The volume difference between an ideal and a real oxygen uptake during the initial minutes of exercise

• The decrease in oxygen levels due to increased breathing rate

What is meant by "Alactacid Debt" in terms of recovery after exercise?

• The process of breaking down lactic acid in the latter part of recovery

• The replenishment of CP stores during the early recovery phase

• The accumulation of lactic acid during high-intensity exercise

• The need for increased oxygen intake during the recovery phase

What happens during the "Lactacid Debt" phase in recovery?

• CP stores are replenished rapidly

• Oxygen uptake returns to resting levels immediately

• Lactic acid is broken down in the latter part of recovery

• Oxygen deficit continues to increase

During steady state exercise, when is a "steady state" achieved according to the diagram?

• Immediately as exercise begins

• After about 3 minutes of exercise

• After about 7 minutes of exercise

• When the exercise ends and recovery begins

Which energy system is dominant at the very beginning of exercise according to the energy continuum?

• Aerobic

• Lactic acid

• ATP-PCr

• None of the above

Approximately how much ATP is provided by anaerobic mechanisms during bouts of exercise lasting around 1 minute?

• 30%

• 50%

• 70%

• 90%

At what point during exercise does aerobic resynthesis increase significantly?

• After 1 minute

• After 2 minutes

• After 3 minutes

• After 5 minutes

When is the aerobic system most active during exercise?

• At the start

• After 1 minute

• After 3 minutes

• After 5 minutes

What does the graph in the image illustrate about the energy systems used during physical activity?

• It shows that only one energy system is active at any time during physical activity.

• It indicates that all three energy systems can work simultaneously to provide the ATP synthesis required.

• It suggests that energy systems are inactive during physical activities.

• It demonstrates that energy systems work independently without any overlap.

What does the contribution of energy systems depend upon?

• Intensity & sport being played

• Time & type of activity

• Duration & intensity