yep. why wouldn't they?
your fingers are powered by muscles. muscles don't operate at '100%' when they are dehydrated, cold, broken, when their partner bones are broken, being broken down, when deprived of glucose or oxygen, etc.
also, i've personally noticed that when i don't get enough sleep, i also type alot slower + more errors. it's actually one of my 'did i get enough sleep tests' lol