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Condom pumping

I was holding off because I wanted to think some on your theories.

Great illustration you created. If I had tried to do that, nobody here could even figure out where the penis is in all this.

I don’t think the pressure is the same between the condom and the shaft/glans skin as it is between the condom and the walls of the tube. I think the pressure is lower between the condom and the skin such that the condom presses in while the outside (wall to condom area) pressure expands everything outward. When I do this, there is no visible air chamber within the condom, between it and the shaft. The erection appears not quite as full as pumping without a condom.

I think you are right that as the condom squeezes, it increases pressure somehow within the shaft which is attempting to expand but is limited in that by the condom.

My question in this is why, or how, does the shaft tend to take on more engorgement than it normally would, post pump, when the condom is removed?


_______________

avocet8

A8,

Here’s the best I can do right now in addressing that question. As I’ve written repeatedly, I believe that wearing a condom while pumping actually increases penile pressure with respect to the vacuum (BTW, If Sliver is right and the pressure is regulated at the back end of the CCs, then at least the condom does not reduce pressure).

Under the pressure, the penis “wants to” expand, but its displacement is actually constrained. Possibly, with the “contents under pressure,” some changes take place within the penis. I’m no chemist or biologist, but I believe that water regulation within cells changes with pressure. Perhaps the cells adapt to the change by increasing their internal pressures to keep their volumes in equilibrium (some kind of osmotic pump). When the vacuum and condom are removed, the increased cellular pressure remains high. The cell walls and hence the macrostructures are pushed out, resulting in a plumper post pumped penis :) .

Perhaps this can happen both with and without a condom, but the condom does help provide some compression. Possibly, the condom increases CC and CS pressure, by displacing lymph and thus not allowing lymph to fill the available space.

I need to think about this some more, but I’m unfortunately late for dinner. I’ll check back later.

I only have a EG of 5 (up from 4.5 though) and one thing I do is
slide a toilet roll over my member then slide it into the pump. My
favorite routine now is:

20 fulcrum hanging
get semi hard
10 min pump
50 - 100 dry jelq
10 min pump
50 - 100 dry jelq
10 min pump
50 - 100 dry jelq

wear the theraband for a couple hours

Does this look pretty good?

Originally Posted by ModestoMan
A8,

Here’s the best I can do right now in addressing that question. As I’ve written repeatedly, I believe that wearing a condom while pumping actually increases penile pressure with respect to the vacuum (BTW, If Sliver is right and the pressure is regulated at the back end of the CCs, then at least the condom does not reduce pressure).

Under the pressure, the penis “wants to” expand, but its displacement is actually constrained. Possibly, with the “contents under pressure,” some changes take place within the penis. I’m no chemist or biologist, but I believe that water regulation within cells changes with pressure. Perhaps the cells adapt to the change by increasing their internal pressures to keep their volumes in equilibrium (some kind of osmotic pump). When the vacuum and condom are removed, the increased cellular pressure remains high. The cell walls and hence the macrostructures are pushed out, resulting in a plumper post pumped penis :) .

Perhaps this can happen both with and without a condom, but the condom does help provide some compression. Possibly, the condom increases CC and CS pressure, by displacing lymph and thus not allowing lymph to fill the available space.

I need to think about this some more, but I’m unfortunately late for dinner. I’ll check back later.

That’s as sensible an explanation as I have heard, Modesto. I’ll stay with that one for now.


_______________

avocet8

Originally Posted by getpump
I only have a EG of 5 (up from 4.5 though) and one thing I do is
slide a toilet roll over my member then slide it into the pump. My
favorite routine now is:

20 fulcrum hanging
get semi hard
10 min pump
50 - 100 dry jelq
10 min pump
50 - 100 dry jelq
10 min pump
50 - 100 dry jelq

wear the theraband for a couple hours

Does this look pretty good?

I have never been a hanger and so can’t help you on your routine notes.

A toilet paper cardboard is a novel way to get the compression we have been talking about. I hope for you that in six months you will not even be able to get your head inside a toilet paper roll.

You use lube inside that roll tube? Sounds abraisive if you don’t.


_______________

avocet8

Hi

anybody tried condom pumping by using a cock ring?

Cheers

Andreas
Bangkok

Originally Posted by getpump
I only have a EG of 5 (up from 4.5 though) and one thing I do is
slide a toilet roll over my member then slide it into the pump.

Interesting concept. A tube-within-a-tube! I think I’ll try a piece of lubed-up thinwall plastic tubing. I’m thinking a gravel cleaner tube would work quite well. Also, it would be easier to monitor as both tubes are clear.

No lub, its tight after pumping though. Hope I cant use it in 6 months
either but its taken me 2 yr to get from 4.5 to alitttel under 5 EG so 6 more
month most likly make that big of a difference.

avocet8 do you just use stretches for length?

Any advice on the routine? I try to do it 3-4 times a week.
Other days wet jeql and squeezes. Dont alway have the privacy/time
to pump

I always begin PE with flaccid stretches, in all directions, immediately after the warm wrap. I think stretches help facilitate length gain.


_______________

avocet8

ModestoMan,

I think you are very close on the mechanism of condom pumping effects and, thanks to the many inciteful posts by many of you guys and the moderator, this is one terrific thread!

I have a couple of added thoughts - 1) cells and body fluids certainly are impacted by pressure - just think of the ‘Bends’ divers get when gases such as NO (Nitrous Oxide, and others) dissolve in the blood at the high partial pressures down deep and then ‘boil’ out of the blood to form cavities/bubbles if a diver comes to the surface too quickly. I’m not saying that penile tissue engorgement after pumping is the bends, per se, but dissolved gases at slightly increased differential pressures during pumping might come into play albeit on a much reduced scale compared to the deep sea diver. The reason that NO gas might come into play is that some folks take Viagra and/or L-Argenine but it’s anybody’s guess how much NO is dissolved in the blood at any one time. Just a thought.

2) lets look at pressure gradients - the RMS average blood pressure of a healthy adult is probably around 107 mm Hg or approximately 4 inches of Hg - add a nominal 4 inches Hg of vacuum and you have a pressure gradient of 8 inches of Hg (2X normal), most of which impacts the largest internal cavities inside the penis first. Who knows what pressures and stresses there are on individual cavernosa cells because of internal hydraulic effects but the forces even at 4 inches of vacuum are significant.

3) Think of the forces you could generate if you could somehow exercise your legs while penile pumping as an increase in both blood pressure and pulse rate could add at least another inch or so of Hg pressure on the supply side (neat trick if you could still keep your erection in the tube - smile). That’s why squats, lunges, squat jumps, and power walking wearing a weighted vest could have a huge positive effect for all forms of PE by building bigger ‘pipes’ and thus cutting down on pressure drop so the blood gets to the groin at higher supply pressure and flow (Viagra and L-Argenine not withstanding) which would reduce the need for high levels of vacuum somewhat.

4) Reference double condoms and condom breakage, has anyone tried the so-called super strong units like the durex ultra strong condoms (I think Trojan has an extra strong condom, too). Extra strong (like used for anal activity) might be easier to deal with in terms of taking them on and off without tearing them up and they might be a bit stiffer, too so as to further reduce surface engorgement effects while inside the tube. Just a thought.

Thanks again for a terrific thread,

MrTiPS

Originally Posted by MrTips
Who knows what pressures and stresses there are on individual cavernosa cells because of internal hydraulic effects but the forces even at 4 inches of vacuum are significant.

In the drawing I attached above, I cite a reference that states that the CC’s pump up to several hundred mm-Hg during an erection. 500 mm-Hg is about 20 inches-Hg.

Originally Posted by MrTips
3) Think of the forces you could generate if you could somehow exercise your legs while penile pumping as an increase in both blood pressure and pulse rate could add at least another inch or so of Hg pressure on the supply side (neat trick if you could still keep your erection in the tube - smile)

Interesting idea. I don’t know whether CC pressure is determined as an “offset” from your body’s BP, or whether there’s a separate regulation system involved.

On a slightly different subject, I’ve often wondered whether squats could help with PE. I lifted weights for many years and my body weight stayed at around 185 lbs. Then I started doing squats and my weight quickly shot up to 225 lbs, with low body fat. I think I may have read decades ago that squats induce some chemical change in your system that promotes muscle growth. I’ve often wondered whether it could promote penile growth as well.

Sorry Thunder. I forgot the sign. Pressure inside the CC’s is positive. Pressure induced by the vacuum is negative. According to the reference, the CC’s are at around +20 in-Hg. If the vacuum is set to -5 in-Hg, there’s a difference of 25 in-Hg between the insides of the CC’s and the environment surrounding the penis (Don’t know whether that’s significant).

Thunder - The vacuum in the pumping tube is a negative 4 inches of mercury, the positive pressure in the penile artery is about 4 inches of mercury. The positive pressure in the cavernosa as ModestoMan suggests could be much higher like 20 inches of Hg positive. If so, no wonder the Tunica is double plyed and so damn tough!

ModestoMan, thanks for your post ref the pressure info. The large muscles like the glutes and quads, to get as big as yours obviously did on your weight training, had to have received serious growth hormone (HGH), I believe. HGH gets converted in the liver to IGF-1 which promotes cell replacement/growth. A few years ago I had blood tests run before and during a NordicTrak training regimen and I got a significant increase in IGF-1 and Free Testosterone. I wasn’t doing PE at that time, but I know first hand that serious exercise gives me serious wood.

I’m just getting back into PE having tried and failed a couple of years ago. I am combining Pumping with Traction using the Andro extender and heat, lots of heat. To get the leg pump, I power walk (3 miles in about 42 minutes wearing a 50 lb weighted vest 3 times per week) plus some other exercises on a BowFlex. I take a lot of vitamins and supplements, too. The weighted vest is just awsome in terms of rapid conditioning effect. One of the supplements I take is an herbal adaptogen called PrimeOne and it’s better than anything I have ever found for promoting fast recovery and lowering stress. It gives me serious wood, too.

What’s in this thread about condom pumping and shifting the balance of forces is very interesting, like using the inner tube liner to further constrict the tunica and thus mechanically or biochemically generate increased internal pressures. I wonder if those cavernosa pressures you mention at 500 mm Hg might be (partially) osmotic (ie, bio-chemical) and not just hydraulic in nature. Either way, the internal pressure against the tunica would cause the tunica to expand and squeeze the surface tissues against any restricting surface barrier be it liner, condom, or the tube wall. That would thin the surface tissues and not allow them time or opportunity to engorge.

Furthermore, once the tube is filled or the Tunica is radially up against a barrier like the wall of the tube, it would seem that the logical direction for expansion and growth is only longitudinal along the axis of the vacuum tube until the penis hits the end of the tube. So, length is favored over girth.

However, if the penis was in a vacuum tube liner that could only expand in the radial direction and was otherwise constrained in length by the liner design, then perhaps the penis would grow preferentially in the radial direction and girth would be enhanced over length. One possibility is to have the wrapped area behind the glans and the glans work against the tapered, inner surface of a padded cup/insert that would slide into the the tube barrel where the annular base of the cup rests against the capped end of the vacuum tube. In other words, a much more comfortable vaccum tube end.

This is just a thought for further investigation, but the essence of the idea is to shift the balance of forces to favor girth over length and to use the internal forces generated by the body itself to do the job. Like ModestMan or maybe one of the other gentlemen said - if you squeeze a round balloon, it will look like a sausage. Well, if you push on the ends of a blimp, it should start to look like a fatter blimp.

All the Best,

MrTiPS

ModestoMan,

As a follow up to your previous posts ref the high, supra systolic pressures internal to the cavernosa, it appears that involuntary muscle contraction(s) associated with the BC generate the constrictive forces (ie, “pump”)necessary to achieve the 500mm Hg or so that you cite. One such reference is at: http://www.endotext.org/male/male8/male8.htm

As an interesting aside, some researchers actually implanted a miniature pressure sensor internal to the cavernosa of lab rats to study the pressure responses under different states of sexual arrousal. A horny male rat getting it on max’s pressure in the cavernosa at over 1500 mmHg above a nominal systolic pressure of say 200 mmHg. In other words, he damn near turns himself inside out!

Since the BC and associated muscles have both voluntary (think BC flex) as well as involuntary neural control, everything a man could do to strengthen the BC with flexes is hugely significant. You need a bigger, more powerful BC constrictor to compress the added volume to balloon a bigger cock. That’s why squats and other exercises as well as BC flexes are so critical to strengthen the entire pelvic floor. Whether a man could knowingly flex his BC and generate the kinds of pressures that his autonomic system does is another very interesting question. I have tried to measure it (BC pressure rise) on myself with limited success and, if I get better and more consistent data, I will post the numbers.

The rat study reference is:

http://ajpregu.physiology.org/cgi/c…full/276/2/R441

TTYL,

MrTiPS

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