Which type of muscle fiber has been shown to be the most efficient?
A)type I.
B)type IIa.
C)type IIx.
D)type I and type IIx have equal efficiency.

Question

Quizplus · Accepted Answer

Type I muscle fibers have been shown to be the most efficient due to their high oxidative capacity and ability to produce ATP through aerobic metabolism, which allows them to sustain contractions for longer periods of time without fatiguing. Type II muscle fibers, on the other hand, primarily rely on anaerobic metabolism and fatigue more quickly.

Which Type of Muscle Fiber Has Been Shown to Be