Forceful exhale hold = empty lung hold?

[XyseR]

wow, congrats on gettign 2 mins...that's really good! i'm going to try and train like 30 mins today. going a whole lap while underwater would be killer...those contractions would be like super hard. i guess it may be stressful on you heart? i don't quite know either...hmmm. lol i kinda want to feel what blood draining from my arms feels like...but that doens't sound good. if you don't have blood in your arms or liek a body part for long enough doesn't it just get all purple and it falls alseep?

[perow1]

To me a forced exhale hold is just extremely uncomfortable. One reason might be that I am able to force out air forever. When I start the hold i am just in total vacuum. Still I find FRC holds uncomfortable too and I have a very high TLC/FRC ratio.

Still I think FRC/empty lung holds are very useful and I should do it more often.

[naiad]

I don't know how much volume I have left after a forced exhale, but it does feel like a total vacuum when I start the hold. That's what I don't like about them, but it has got easier, so maybe I will get used to it.

I only do dry forced exhale statics. I'm not sure about the safety of doing it in the pool. If I BO with empty lungs, will water be drawn in by the negative pressure? Not something I want to find out the hard way.

[perow1]

I think it is a good thing not to do forced exhale/negative packing statics in the water unless you really know what you are up to. Getting water into the lungs might make things complicated.

Negative dives and FRC static are not the same as when you really force the air out. I am not the one to say that it is a big NONO, but I would at least advice that it should be done with EXTREMELY BIG caution, if at all.