Explain why you think it wouldn't? please use some documented notes from the medical field, not a bodybuilding theory.
i've already answered your question. for our anatomy to move "in any way" it requires a muscle to contract to a degree.
see. this is where i will ave to say that i dont really know the answer for certain, but; i am pretty sure that a bone CAN move without a contraction happening.
watch. rest your arm down to your side. now contrat your bicep so you pull your forearm up., now release all bicep tension, and let your arm be still. what happened? IT FELL. BECAUSE YOU CONTRACTED YOUR TRICEP? NO, BECAUSE THE FORCE OF GRAVITY PULL IT DOWN. BUT YOUR FOREARM EXTENDED, AND YOU DIDNT CONTRACT YOUR TRICEP? HOW IS THAT POSSIBLE? (sorry about the caps, i didnt mean for that to happen).
its basicly the same thing happening with the chest contraction... you are pushing your humerous bone up, and as that happens you forearm is sliding in its joint outward, not as a result of a tricep contaction, but as a result of physics... because it HAS to move that way if your hand is gripped onto a weight, and your humerous is extendding upward.
the key is to LET this sliding hapening, not to force it with the tricep. if you relax al the muscles other than your chest...this wil happen naturally; and you will not be using any other muscle.
there you go.
you cant learn everything from college professors.