Fast-twitch fibers can deliver a quick burst of power.Slow-twitch fibers can maintain a contraction for a longer time!
-Apex :]
There are fast twitch muscles fibers in all of your muscles, especially in your legs.
Fast twitch fibers
Slow twitch
fast-twitch NOT slow-twitch
I think you are thinking of fast twitch muscles. There are two kinds fast twitch and slow twitch.
Presence of myoglobin makes the difference between the two.
People who possess a high percentage of fast twitch muscles will generally be quicker, faster, and able to jump higher than people with a lower percentage of fast twitch muscles.
They contract very quickly
yes
Fast twitch muscle fibres are ones used for sudden bursts of physical activity, such as sprinting or weight lifting. Slow twitch muscle fibres meanwhile are designed for extended periods of contraction, such as keeping a person's head supported or maintaining a standing posture. Physiological differences between the two fibres are largely down to their different energy requirements. Slow twitch fibres have more surrounding capillaries, more mitochondria and a larger amount of myoglobin within the muscle (causing them to be red in color). Meanwhile fast twitch fibres have a store of glycogen to provide a quick burst of energy when the muscles come into action.
Type I muscles
Yes Such as in weight traning if you train your fast twitch you will recover faster but fast is more muscle strength not really size if your looking for size in muscles go with slow twitch