Originally Posted by vkn1
Stretching tissues causes greater production of IGF-1. I’m really busy at moment and have to get off internet, but stretching has become a big thing lately in bodybuilding for it’s actual muscle bulding effects.
I’ve felt this to be true for a long time, but never known why it works. Thanks for the information.
Between the TGC and the chemical PE thread, I really think we are close to a major breakthrough in our understanding. I’m working on a few pieces myself…
First, I think that ligament stretching is really a separate issue from everything else. It’s relatively easy to stretch ligaments, which is why just about anything gets you newbie gains, and I think lig stretch and EQ are where most of "newbie gains" come from. Some of us have more potential in this area than others, but most people seem to "hit the wall" after anywhere from a few weeks to a few months, and their gains slow dramatically or stop altogether. And, of course, this does nothing for girth.
The problem remains: how to expand the other tissues? The TGC thread has a lot of excellent thoughts, of which the most important one is that you need both a larger tunica and the tissue and blood supply to properly inflate it.
We’re all familiar with Big Girtha’s saying "never let it turtle"…the theory being that any healing should be done in an extended state, otherwise you’ll just heal at the same size you started. Well, most healing gets done during sleep, when you can’t really wear an ADS, and and ADS does nothing for girth anyway. That’s what nocturnal erections do for you…they keep your penis inflated during sleep, so this healing is done in an engorged state.
Also, not only does the increased blood flow speed healing…it aids muscle and tissue growth too. (A continuous erection would impede it, but nocturnal erections come and go, pumping blood in and out.) So no matter whether you subscribe to the "damage" theory or the "growth" theory, or whether you believe that it’s a combination of both, good night wood is necessary to good non-ligament gains.
Then we have the "stretching causes production of IGF-1" tidbit. These abstracts are suggestive:
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Local expression of IGF-1 accelerates muscle regeneration by rapidly modulating inflammatory cytokines and chemokines - PubMed