Rebreather World - View Single Post - How much oxygene does a uncounsious diver use per minute?

Edvin M · 28th November 2007, 19:51

[quote=nigelh;153964]Six minutes is impressive, I'm guessing that wasn't face down in the water where I am pushed to exceed three.

Breath hold diving isn't really controlled by O2 but CO2. I've done a big breath hold with a cheap O2 sensor and the blood at my fingertip didn't drop significantly below 98% saturated. [quote]

I dont really agree with you there, when I started to freedive my breathholding was controlled by CO2, I always gave up when I was getting to heavy "need-to-breath" feelings but after a while I conquered them and could hold my breath until I blacked without a problem.

Regarding your blood O2 level, I did some reading about freediving medice where people where using O2 meters to check blood O2 level and they were in the area of <95% so apparently you will continue to have a high level of O2 in your blood which brings my metabolic down to 0.2 l/minute.

So the figures Jaap stated should be correct.

28th November 2007, 19:51	#9 (permalink)
Edvin M New Member Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Aug 2007 Location: Lysekil, Sweden Posts: 99	Re: How much oxygene does a uncounsious diver use per minute? [quote=nigelh;153964]Six minutes is impressive, I'm guessing that wasn't face down in the water where I am pushed to exceed three. Breath hold diving isn't really controlled by O2 but CO2. I've done a big breath hold with a cheap O2 sensor and the blood at my fingertip didn't drop significantly below 98% saturated. [quote] I dont really agree with you there, when I started to freedive my breathholding was controlled by CO2, I always gave up when I was getting to heavy "need-to-breath" feelings but after a while I conquered them and could hold my breath until I blacked without a problem. Regarding your blood O2 level, I did some reading about freediving medice where people where using O2 meters to check blood O2 level and they were in the area of <95% so apparently you will continue to have a high level of O2 in your blood which brings my metabolic down to 0.2 l/minute. So the figures Jaap stated should be correct.
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