What is the difference between fast-twitch and slow-twitch muscle fibers.

Fast-twitch fibers can generate more force, but are quicker to fatigue when compared to slow-twitch fibers. The phasic muscles responsible for generating movement in the body contain a higher density of fast-twitch fibers. ... Fast-twitch fibers are responsible for the size and definition of a particular muscle

answercobra of 1985;