Tyler,
The real issue here is whether or not the breathing I do ventilates CO2
more than with what I can only call "breathing at rest." (breathing at rest may of course include "ventilations" depending on the body's state, depending on the day and the person, but for the purpose of this discussion, I mean a rough homoestatic state).
My answer is that although I may have the intention of actively relaxing and preparing for the static (perhaps this starts to release buffers or induce vasoconstriction by mental stimulus-you never know) and that being wet also has its effects on the body, I am not inhaling or exhaling any MORE often or deeply than "breathing at rest."
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But it is the exhale that causes the ventilation of CO2. Shallow breathing can easily perform ventilation. By limiting the inhale to a neutral position, you are required to use more force on the exhale. Neutral position is at rest and only at rest. Neither inhale nor exhale. So, if you put a ceiling on the inhale, then the exhale will compensate, and likewise if you put a floor on the exhale, then the inhale will compensate.
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I don't follow this. The whole point of sub neutral breathing as I interpret it is that gravity, thoracic tension and elasticity, all limit the inhalation. You don't ever force the breath beyond what your muscles can do involuntarily. Same on the exhale. It is not breathing actively under a neutral volume point.
Merry Xmas, and I'll be happy to continue this lively discussion in the car on the way to go surfing!!!!!!
