CO2 is only a problem in your blood, not in your lungs. Exhaling won't diminish the C02 content of your blood. You would have to exhale repeatedly to get rid of excess C02. As a matter of fact, the increase in pC02 in your blood is what makes you want to breathe, not the oxygen content. That is why it is a mental game. The only danger is when you get so good at resisting the urge to breathe, when your C02 builds up, and eventually you DO have a problem with lack of oxygen, which will kill you. The C02 will eventually increase your acidosis, but not in that short a period of the apneia. I use to blow out some air, but after reading a lot, it seems reasonable to hold on to the air in your lungs for as long as you can, since the residual oxygen will be uplifted to the blood. That will help you to not pass out, but it won't prevent your need to breathe. billy fanstone
Yeah, these deep free dives are insane, but I can see the appeal of what this guy did. At least if this guy passes out he's three feet below the surface. When the free divers pass out they're 400 feet down. This seems like a big difference in my book.
Very, very dangerous stuff this is! I knew a guy in Rochester, NY in 1971 that was a pretty good swimmer and he darn near died from this stuff....and had he not had great friends in the pool while doing this...he would have died....My take, this should ONLY be attempted with people who know first aid....watching you every step of the way. Other then that, you are really asking for the box!
I also knew an off shore free air - deep diver who was world class and he came up in the Med. off Italy in a world class event with blood in his mask...near dead....Very dangerous stuff only for the careful and well trained!
Geek, you have a tremendous talent for putting things in their proper perspective. From what my friend who competed in free air - deep dives told me, this sport is as dangerous as they get, and when things go wrong, they usually go very wrong, often with fatal consequences. Gosh, some of these world class free air deep divers have been down to 700 feet or so (don’t hold me to that number, but it sticks in my mind), and that is way over the edge of safety in my book.
I am not saying they should not do this....I am saying I can think of much better ways to go in the box then this stuff....
I looked on the web and the deepest I found was in 2002 in the No-Limit Class...which uses weights to get down and a float bag to get back to the top...around 485 feet...Wow...
Originally posted by Guvnah
I'm curious about the way he fills his lungs before he starts. It's like he's forcing more air into his lungs than a normal breath would take. I have seen this same action by the East Germans and a couple of Dutch swimmers. It appears he is swallowing air into his stomuch and also filling his lungs. It also appears that he has a weight around his neck to help keep under the water.
Dima, Thanks for the post. That was amazing!
Originally posted by geochuck
And I thought I was good 55 years ago swimming underwater for 125 yards. This guy is good.
George 125 yds IS good. Were you wearing fins?
Originally posted by fatboy
Dima, Thanks for the post. That was amazing!
George 125 yds IS good. Were you wearing fins?
I couldn't get the link, but 166 meters is outstanding! wow!!.. and yes, George, 125 yds is great!
