What are the two types of muscle fibers?
a. type 3 and type 4
b. type 2C and type 2D
c. fast - twitch and slow -twitch
d. short -twitch and long -twitch
a. type 3 and type 4
b. type 2C and type 2D
c. fast - twitch and slow -twitch
d. short -twitch and long -twitch