Question

multiple choice 10 points what characterizes fast - twitch muscle fibers? aerobic energy system rapid contraction use of oxidative energy system endurance

Explanation:

Fast - twitch muscle fibers are characterized by rapid contraction. They generate quick, powerful bursts of force but fatigue relatively quickly. They are not primarily associated with endurance or the aerobic/oxidative energy systems which are more related to slow - twitch fibers.

Answer:

rapid contraction