Fast glycolytic muscle fibers depend on carbohydrate as a fuel, whereas slow oxidative fibers are capable of metabolizing carbohydrates, lipids, or amino acids. What is the physiological reason for this difference?

Question

Quizplus · Accepted Answer

Fast glycolytic fibers rely on anaerobic glycolysis, which rapidly produces ATP from glucose, while slow oxidative fibers use aerobic metabolism, allowing them to utilize carbohydrates, lipids, and amino acids for sustained energy production.

Fast Glycolytic Muscle Fibers Depend on Carbohydrate as a Fuel