PerroneFord
Contributor
Spectre:Let us know when you get your cavern cert, so we can ask for your revised progression
Will do.
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Spectre:Let us know when you get your cavern cert, so we can ask for your revised progression
waygone79:cavern should be done this summer (money is the big issue for me being a broke college student) I have been buying equipment tailored to this type of diving, I did all my checkout dives with my halcyon back plate and wing and just got my hands on a atomic M1 setup i am looking into a set of doubles next but i have to work on my air consumption (and quit smoking) I know this is a little off topic but i notice when i dive air my consumtion is quite a bit higher then when i dive with nitrox i actually get about a 1/3 more time out of nitrox then air, I havent calculated my sac recently but it gets better wth every dive, anyone else evern noticed this or am i just a freak of nature (j/k) thanks guys
RICHinNC:For a second, from the title, i was going to recommend my ex wife...she cant drive for doodoo.....but you meant diving
PerroneFord:Nitrox is carrying more oxygen than air so it's more efficient for your lungs to work with. Not a phenomenon. Very normal.
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WaterDawg:Really? Does this happen alot?
I have a feeling that breathing EAN is NOT what is causing the decrease you consuption by 1/3.
PerroneFord:Nitrox is carrying more oxygen than air so it's more efficient for your lungs to work with. Not a phenomenon. Very normal.QUOTE]
As a respiratory physiologyst I can tell you that this is not correct. The amount of oxygen your lungs can extract into your blood from whatever gas you breathe is limited by the flow of blood through your lungs, not by the oxygen content of the breathing gas. Since the vast majority of oxygen in your body is carried bound to hemoglobin, not disolved in blood plasma, even breathing 100% O2 will only increase the total content of O2 in you blood by a very small amount.
The noted decrease in gas consumption has more to do with increasing experience and comfort in the water.
Cam
As a respiratory physiologyst I can tell you that this is not correct. The amount of oxygen your lungs can extract into your blood from whatever gas you breathe is limited by the flow of blood through your lungs, not by the oxygen content of the breathing gas. Since the vast majority of oxygen in your body is carried bound to hemoglobin, not disolved in blood plasma, even breathing 100% O2 will only increase the total content of O2 in you blood by a very small amount.
The noted decrease in gas consumption has more to do with increasing experience and comfort in the water.
Cam