Currently, muscles are classified into two basic types: slow-twitch powerful fibers and fast-twitch endurance fibers.

Question

Quizplus · Accepted Answer

Muscles are classified into two basic types based on how they produce energy: slow-twitch fibers (Type I), which are more fatigue-resistant and suited for endurance activities, and fast-twitch fibers (Type II), which are less resistant to fatigue but more powerful, suitable for quick, intense movements. The classification is not as stated in the question; it's actually the opposite in terms of their characteristics (powerful vs. endurance).

Currently, Muscles Are Classified into Two Basic Types: Slow-Twitch Powerful