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Thanks for all the replies.

Originally Posted by cdavis

Could be that you may inhale a good bit more air doing dry static, more o2 plus more volume to dilute the c02. For me its somewhere around .5 l (face down). That is significant in percentage terms.

I have tried packing with both, and my dry static PB without packing is much longer than my wet static PB with packing. In fact my best times have been done without packing, and I can gain about 1l with it.

Originally Posted by mullins

Are you blacking out or getting LMC earlier dry than wet? Or is it just a subjective judgement of how you're feeling?

I do black out much earlier wet than dry.

Originally Posted by azapa

my two pesos: in pool statics you are surrounded by people, dry you are at home by yourself?

The second would be more relaxing i assume and you would be starting it in a more relaxed state. The former, you may have already (earlier) done some warm up lengths of the pool, and all though not feel depleted, may be a little, that combined with the peer pressure, anxiety etc takes its toll?

I never do warm up lengths or any other warm up exercise before any training, wet or dry.

Maybe I am a bit more careful because others are watching, but often I am just with one buddy, and I am quite relaxed and not thinking of being watched.

Originally Posted by efattah

Here are two reasons:

1. Oxygen absorption through your skin
- Your skin absorbs a lot of oxygen, up to 8% of your body's requirement. Underwater this is not the case.

2. CO2 storage
- Under conditions of vasoconstriction & cold, your CO2 storage capacity is reduced. This requires you to modify your diet, training or breathe-up to compensate. If you use the same diet/training/breathe-up for wet static and dry static, then your wet static time will be less. This is the main reason that wet static is a totally different event than dry static, and requires its own training & optimization.

Could be. I don't know about the oxygen absorption, I would have to measure my O2 level during both. I am usually a normal colour after a wet static or dynamic, even when I feel close to the limit. My buddies have never commented that I am seriously blue. I can get much more hypoxic, as measured by colour, during dry statics than wet, and still finish clean.

The CO2 storage could explain the early urge to breathe, but not the early onset of blackout.