There are fast twitch muscles fibers in all of your muscles, especially in your legs.
Fast twitch fibers
Well, I'm not completely sure of this, but in my science class we were talking about slow- twitch muscles (like your esophagus for example) and fast twitch muscles (like your leg muscles). Anyway, I asked do sloths have slow twitch muscles in their legs, and he said to look it up, so I did, and it turns out they do! So the reason is they have slow twitch gastrocnemus (calf) muscles!
Slow twitch
I think you are thinking of fast twitch muscles. There are two kinds fast twitch and slow twitch.
fast-twitch NOT slow-twitch
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.
Fast-twitch fibers can deliver a quick burst of power.Slow-twitch fibers can maintain a contraction for a longer time! -Apex :]
They contract very quickly
yes
Type I muscles
Slow twitch fibers Slow-twitch fibers are muscle fibers that are used more when compared to the rest. Your legs are full of slow-twitch fiber because you are on your feet much of the time. Another name given for slow-twitch fiber is endurance fiber because they have been forced to adapt via being used so frequently and that is why it is harder for them to grow. Fast Twitch Fibers Fast-twitch fibers are then obviously easier to grow because they are used less. When you are working out it is like they are being challenged for the first time. That is the reason why people see the most gains with these muscles when they first start working out.
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