>> "Its an experimental study, the number of subjects isn't really that important." I'd be interested to understand why this is? I replied to cossatot below i

>> "Its an experimental study, the number of subjects isn't really that important." I'd be interested to understand why this is? I replied to cossatot below in more detail. The short version: In studies like this one, N isn't 5, but humans(e.g. the original N) x treatment repetitions x measurement points. You are right that it would be dangerous to ignore it, that wasn't what I implied.