I don't mean to laugh, but this sounds very unlikely. The web site linked to above is a bunch of non-doctors coming up with theories about how "smooth muscle" etc "may" behave.
Honestly, if guys could do anything to make their dicks bigger, don't you think the big pharmaceutical companies would have jumped on this train years ago? Johnson & Johnson Penis Extenders, Merck Jelqing Mittens, or whatever?
It just seems about as likely as the tax-protestor theories, the Roswell alien theories, the government-created AIDS theories, and homeopathy. Junk science, from what I've seen.
Let's see the clinical trials. Big Pharma would stand to make a trillion dollars if it could come up with a dick-enlargement system that worked.