Well, optimalss, that’s what I think:
this studies are related to tendons, not TA. This number (4%) that produces “minor damage”, could be a bit different in the specific case of penile tissue - maybe 2%, maybe 6%, who knows. The same for the 8% that cause a major injury to tendons.
Things are moreover complex because, when stretching penis, you are often stretching TA and ligs - similar tissues, but not necessarily identic tissue, if you agree.
So, I believe, we should focus more on abstract principles than on a rigid transfer of numbers from those studies to PE.
What I get from those readings is:
a) a too high tension is counterproductive, because you are causing a fast thougthening and litlle elongation;
b) repeating the stretching can give some additional benefit, but not after a given amount (and this amount is tension-dependent, too);
I have to briefly say here that the connective tissue has three kind of reponse to stretching
1) an immediate, elastic reponse - the tissue elongate, but return in it’s original state.
2) a semi-delayed, viscoelastic reponse, caused by the re-arrangement of collagenous tissue;
3) a dealyed reponse, that is: repairing damages with fibroplasia (that is a kind of hyperplasia - new matter is born, just to say it simply).
Now, we have seen that, according to studies, the elastic reponse in a given session (or day) doesn’t augment after repeating the stress for X time; the same for viscoelastic reponse. So, let’s call this the “optimum work”. How about doing 2X time-work? You tell me. I guess: nothing better. How about doing 10X? I think everybody would say: it’s overwork (or overuse, if you like).
I think if one believe that doing 6 hours of stretching/hanging in a day will produce more plastic deformation is overestimating both elastic and viscoelastic reponse of connective tissue, and forgiving the whole repairing process - where this collagenous continuatively elongating is coming from?
We should see 6” growth in a matter of few weeks, also. I’ve never seen - did you?
c) the adaptation is a process, a reponse to systematical (or cyclic) stress: doing 12 h of stretching in one day doesn’t cause the same adaptive reponse than doing 15 minutes of strech/day, 4 days per week, for 12 weeks - likely, in the first case you’ll have an injury, with the second approach you’ll have an elongation.
On the long run, both low loads and high loads will cause more resistant tissue; this is also necessary for real permanent deformation - this is what we call “cementing”.
But with too high loads the strengthening will be faster and the elongation smaller.
The same with medium loads, but over-repeated.
Heat can aid reducing this thougthening - AKA stalling gains.
If I have done any mistake, anybody is the welcome to show where - that’s why I started a thread, and not an article, this is intented to be a dialectic reasoning.