Heavy breathing on safety stop

[Ivan66]

I am hearing of increasing numbers of divers adopting the practice of breathing very heavily on their safety stops to purge their bodys of nitrogen. However, if you breath like this you are by default breathing in as hard as you are breathing out, so surely you are taking in more nitrogen as much as breathing out more nirtogen, therfore defeating the object of breathing heavily (unless you've switched to 100% O2 that is).

Any thoughts on this please.

[Stevie H]

I've not heard of this but thinking logically, if you are using a deco gas of (say) 50% then you are breathing in far less N2 than you are exhaling.....

But as for heavy breathing!!!!! Na,

[nigelH]

Originally Posted by Ivan66

I am hearing of increasing numbers of divers adopting the practice of breathing very heavily on their safety stops to purge their bodys of nitrogen.

Nobody's model takes breathing rate into consideration because the rate of gas transfer is so low that the gas in your lungs pretty much comes out with the same ratio of inerts as it went in.
You're talking about gassing off a couple of litres over a half hour stop.

I'm sure they feel very clever doing it and wonder why nobody thought of it before.

[Letz]

Personally I believe calm, comfortable relaxed breathing will always be best
If you are calm your breathing is calm. If your breathing is calm, your body will be calm ... and so it goes on.

I'm pretty sure that heavy, effectively strained and/or full of effort, breathing will cause an increase in the likes of adrenalin all leading to an increase need from the body, which will counteract any benefits purported to come from breathing the rich O2 harder.

Go on, sit at the pc now and deliberately try to breathe harder/heavier, see what happens, Bet you go dizzy

Just my opinion but I sincerely believe calm and relaxed, breathing ; natural breathing without thinking, the way your body is intended to work must be best

[Sparky750]

Originally Posted by Sixsquid

Personally I believe calm, comfortable relaxed breathing will always be best
If you are calm your breathing is calm. If your breathing is calm, your body will be calm ... and so it goes on.

I'm pretty sure that heavy, effectively strained and/or full of effort, breathing will cause an increase in the likes of adrenalin all leading to an increase need from the body, which will counteract any benefits purported to come from breathing the rich O2 harder.

Go on, sit at the pc now and deliberately try to breathe harder/heavier, see what happens, Bet you go dizzy

Just my opinion but I sincerely believe calm and relaxed, breathing ; natural breathing without thinking, the way your body is intended to work must be best

Ok I'm dizzy

[Ian_A]

Originally Posted by Sparky750

Ok I'm dizzy

i,m dizzy watching yor avatar....

[Letz]

Originally Posted by Sparky750

Ok I'm dizzy

Yeah but that's what you were aiming for

[SilvaFish]

Originally Posted by Sixsquid

Personally I believe calm, comfortable relaxed breathing will always be best
If you are calm your breathing is calm. If your breathing is calm, your body will be calm ... and so it goes on.

I'm pretty sure that heavy, effectively strained and/or full of effort, breathing will cause an increase in the likes of adrenalin all leading to an increase need from the body, which will counteract any benefits purported to come from breathing the rich O2 harder.

Go on, sit at the pc now and deliberately try to breathe harder/heavier, see what happens, Bet you go dizzy
Just my opinion but I sincerely believe calm and relaxed, breathing ; natural breathing without thinking, the way your body is intended to work must be best

Point well made, Ssquid, hyperventilating at the surface isn't very good for you (think brown paper bags!), so lordy knows what would happen at depth?

[frosty the snowman]

Originally Posted by Sparky750

Ok I'm dizzy

Only because you've been looking at THAT website agian haven't you? You filthy beast.

[pawel]

Originally Posted by Sparky750

Ok I'm dizzy

I'm Dizzy too!