I have a question related to this...
I have heard that the position of the cleat affects the muscles that are used when cycling. Does this make any sense

So when the cleat is for example in the front of the shoe (I mean of course in the slot that is made for it..) riding would effect more on the front of the thigh and so on. Does anyone know if this is true and if so what are the different positions and their effects?

Oh dear I hope someone can at least understand what I´m trying to say..