Schwinn Bike Energy Systems 2

Question 1

During a prolonged indoor cycling class at moderate intensity, which fuel source does the body preferentially burn after glycogen stores are partially depleted?

Accepted Answer

Free fatty acids

Answer

At moderate intensities with depleted glycogen, the body increasingly oxidizes free fatty acids via the aerobic system.

Question 2

Which metabolic byproduct accumulates when exercise intensity exceeds the lactate threshold?

Accepted Answer

Lactate and hydrogen ions

Answer

Above lactate threshold, lactate and hydrogen ions accumulate faster than they can be cleared, contributing to fatigue.

Question 3

In an indoor cycling class, a 20-second all-out sprint primarily taxes which energy system?

Accepted Answer

Phosphagen system

Answer

Maximal efforts under 10–15 seconds are fueled almost entirely by the phosphagen (ATP-PCr) system.

Question 4

What term describes the point during exercise at which the body shifts from predominantly aerobic to anaerobic energy production?

Accepted Answer

Lactate threshold

Answer

The lactate threshold marks the intensity at which anaerobic glycolysis begins contributing significantly to energy production.

Question 5

Which of the following best describes the aerobic oxidative system's primary advantage over anaerobic systems?

Accepted Answer

Unlimited energy yield without fatigue-causing byproducts

Answer

The aerobic system can produce large amounts of ATP using fats and carbs without accumulating fatigue-inducing byproducts like hydrogen ions.

(Schwinn Bike) Schwinn Indoor Cycling Instructor Certification Practice Test

(Schwinn Bike) Schwinn Indoor Cycling Instructor Certification Practice Test

Schwinn Bike Energy Systems 2