Quote:
Originally Posted by tmcdmck
also our argument is derived from basic logic ie
"doing something that will relax your abs is really stupid when you are lifting heavy stuff, the reason being that your abs relax"
this seems like circle reasoning. Anyway, your "core" is the weakest part of the body in a purely mechanical sense because the solid structure consists of only the spine. Thus to reinforce the spine during heavy lifting it is imperative to facilitate a good transfer of power across the region without endangering the spine itself. This is accomplished in the human body by the abs which keep the soft tissue tense and relatively rigid, breathing during the lift can and will affect the rigidness of this region and thus increasing chances of lift failure or worse injury due to lack of stability.
Not to mention the fact that loosening the abs causes a less rigid system leading to potential injury in other regions because of it.