I will try to answer your questions first, then offer some explanations.
Originally Posted by joe2
My guess is that I use more force while manual stretching compared to a hanging session.
But what do I make out of this?
In this case, you likely use more force manually. I don’t think there’s anything to make of it though, it’s not a good comparison given all the other variables.
Originally Posted by joe2
Does it mean that the manual stretching will be more efficent in the long run when the workout produces bigger short term gains?
I don’t think we can reach that conclusion, but I think there are some suppositions we can make.
Explanation:
In your case, there isn’t enough information on which to really make meaningful conclusions.
In general, I think keeping measurements of your BPFSL is a great way to track progress. I believe an increasing BPFSL is a sign of gains. However, it’s important to look at these measurements over a longer period of time; a single session won’t yield anything useful. The reason being that the measurements will likely go up and down as your penis goes through various stages of fatigue, recovery, growth, etc.
Additionally, in my experience with hanging and manual stretching there is a distinct difference between the dynamics of the stretch that could possibly account for the differences you’ve noticed after a single session. I don’t think this is the time to really dive into that though as it’s more speculative and not as important as my first point.
In the end, both means of PE clearly work. I wouldn’t be too overly concerned about what is most effective. There’s a lot more at play (time, lifestyle, money, etc.) and what’s always most important is consistency.