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Empty Lung dives

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.

realynew

New Member
Dec 6, 2002
6
1
0
Hi, I read in some of the posts around the forum where divers practice using 'empty lung dives' What does this help?
 

Ben Gowland

Aplysia gowlandicus
Apr 4, 2002
365
41
118
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It helps you:

learn to equalise at depth
Stretch your diaphragm
stretch the capilliaries in your lung tissue (for blood shift)

Anything else anyone?

:confused:
 

cheese

a dairy product
Nov 1, 2002
34
2
0
Dangers of empty lung dives?

Everytime I have read something about this, someone has mentioned that it can be very dangerous.

Can someone tell me what are the specific dangers of empty lung dives? Blackout is obviously one, but are there others?
What about lung squeeze, for example?
 

Alun

Well-Known Member
Oct 5, 2001
763
83
118
Black-out risk?... providing you don't hang about at depth, the risks are very small. There is much more risk of lung injury in my opinion. The rules that I follow are these:

don't stay at depth on an empty lung
turn around if the pressure feels uncomfortable
turn around if you fail to equalise (never bend your ear drums!)
only do empty lung dives along a line

My empty lung dives take about 25-30seconds down to about 10-12m. Gentle slow pull down and back up at normal speed. I could go deeper but it's just not necessary. (If I was diving over 100m+ on the sled, then I would probably go deeper to simulate greater depths.)

For me the main benefit is flexing the diaphragm and rib cage. (Empty lung dives do nothing for equalisation if you use the mouth fill technique. Your ability to equalise depends on the amount of air in your mouth, and nothing else. It is a good exercise if you use any other method though.)

alun
 

Alun

Well-Known Member
Oct 5, 2001
763
83
118
just noticed this thread is in freedive hunting.... probably should be moved to the training/techniques section?

alun
 

realynew

New Member
Dec 6, 2002
6
1
0
wrong section - sorry!

realized it just after I posted:duh Your answers helpful though! thanks
 

andrsn

Just visiting...
Aug 26, 2001
1,213
75
138
48
Since this was put in the Hunting/Photography section, I'll put in my dos pesos...

We never really do "empty lung" dives, but many times we descend w/o fully inhaling so that we're negatively bouyant at shallower depths. This is so that we can get down to a target w/o spooking it. Many times, an aggressive dive will scare fish, but if you just sink down to them w/o really moving, it helps. This mainly occurs when your prey is shallow or is coming in to investigate.

Later,
Anderson
 

loopy

Deeper Blue Hypoxyphiliac
Oct 24, 2002
719
51
0
39
Hey cheese mate, another thing - with empty lung dives, I've found even with shallow stuff (ie 2.5m) I don't get contractions at all -so you can be sitting on the bottom thinking 'hey I can stay here forever' then bang, samba. I'm lead to believe this is fairly common?
 
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