Schwinn Bike Energy Systems 3

Question 1

How does interval training in an indoor cycling class improve the lactate threshold over time?

Accepted Answer

It trains muscles to clear and use lactate more efficiently

Answer

Repeated interval training increases mitochondrial density and lactate clearance enzymes, raising the lactate threshold.

Question 2

What is the approximate duration of maximal effort that the phosphagen system alone can sustain?

Accepted Answer

5–10 seconds

Answer

The phosphagen system can sustain all-out effort for only about 5–10 seconds before phosphocreatine stores are depleted.

Question 3

During an indoor cycling hill climb segment lasting 4–5 minutes at near-maximal effort, which two energy systems are primarily working together?

Accepted Answer

Glycolytic and oxidative

Answer

Efforts lasting 1–5 minutes at high intensity rely heavily on both fast glycolysis and the aerobic oxidative system simultaneously.

Question 4

What role does oxygen play in the aerobic energy system during indoor cycling?

Accepted Answer

It acts as the final electron acceptor in the electron transport chain

Answer

In aerobic metabolism, oxygen accepts electrons at the end of the electron transport chain, enabling maximum ATP production.

Question 5

Which energy system is primarily responsible for ATP production during the recovery period between hard intervals in a cycling class?

Accepted Answer

Aerobic oxidative system

Answer

During recovery, the aerobic system replenishes ATP and phosphocreatine stores while clearing accumulated metabolites.

(Schwinn Bike) Schwinn Indoor Cycling Instructor Certification Practice Test