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Please continue the RMV discussion here.
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A ScubaBoard Staff Message...
Why does your oxygen efficiency matter if nitrogen is the culprit in DCS?In no way am I advocating changing decompression practice or changing a dive schedule by bottom gas usage. I’m talking about loading the dice in your favor by practicing good breathing techniques ,improving your fitness level and oxygen efficiency. I may have some controversial ideas but I wouldn’t stick my neck out that far.
Why does your oxygen efficiency matter if nitrogen is the culprit in DCS?
Less stress, far better focus, much better at coping during a dive, are all benefits from a slow light breathing rate. The more stressful the dive the greater the chance of a DCS incident.Why does your oxygen efficiency matter if nitrogen is the culprit in DCS?
Nothing you suggest is really related to oxygen efficiency. I think you are confusing facts with non-scientific opinions.Less stress, far better focus, much better at coping during a dive, are all benefits from a slow light breathing rate. The more stressful the dive the greater the chance of a DCS incident.
Those threads where rossh gets destroyed by actual scientists are always good for a chuckle.It seems as if science disagrees with you: Does higher RMV cause higher DCS risk?
Improving one's fitness level is totally uncontroversial. And physiologically, I'd expect that to reduce heart rate, thus reducing perfusion and thus - again - reducing N2 loading.I’m talking about loading the dice in your favor by practicing good breathing techniques ,improving your fitness level and oxygen efficiency.
While the proper hyperbaric scientists of course are extremely careful and reluctant about drawing conclusion they aren't more than reasonably sure about, nobody have been able to point at anything indicating that the effects of gas density and dead volume in the airways should be different on OC compared to CC.The odds of a diver who is breathing 21% oxygen at depth in an open circuit suffering CO2 retention has to be very small no matter how light they are breathing.
actually regulator second stage design can be a huge factor, and was very much an issue in reg design 25+ years agoThe odds of a diver who is breathing 21% oxygen at depth in an open circuit suffering CO2 retention has to be very small no matter how light they are breathing. But the opposite where a diver over breathing oxygen reduces CO2 to the point of hyperventilating can very easily happen. Has there ever been a case of CO2 poisoning in a healthy diver using air.
While the proper hyperbaric scientists of course are extremely careful and reluctant about drawing conclusion they aren't more than reasonably sure about, nobody have been able to point at anything indicating that the effects of gas density and dead volume in the airways should be different on OC compared to CC.