Obesity/atelectasis, possibly OSA (with compensatory shift of O2-Hgb dissociation curve).
Get it worked up. You may be having a lung disease and not know it (e.g. from GERD, or thromboembolic disease).
You're probably fine, especially if you're young and have normal exercise tolerance. But if this thing bothers you enough to ask here, better be safe than sorry. Go see a pulmonologist.
I think athletes improve their oxygen extraction and resistance to anaerobic conditions during exercise, not decrease their resting O2 sat.
Yeah yeah yeah, DO2, VO2, Lung volume, and how well you tolerate hypercapnia and hypoxia, etc. I still want to know.
Static. Lie down. Hyperventilate for a moment if you please. Deepest breath in you can and hold.
I've never done dynamic. I've hit 3 minutes a few times. Never felt wise to push mush beyond that as the world is usually getting a little cloudy at that point. I'm intrigued though about this dynamic breath hold training.
pubs.asahq.org
The world record is about 21 min, if memory serves me right. The pros first hyperventilate down to a pCO2 of about 20 mmHg or less, I think.
One can hold their breath even with severe hypoxia, even if severe (happy hypoxics). It's the hypercapnia, even of 42-43, that is unbearable for most apneic people.
P.S. WR is 24+ minutes for males.
And here's the physiology (also where the 3 mmHg of pCO2 increase per minute of apnea comes from):
Anesthesiology
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
I'll push it and get back to you. I'm writing this down because I'm intrigued. I've done some of the CO2 and O2 tables and square breathing, but never while walking around or anything. Challenge accepted.
The world record is about 21 min, if memory serves me right. The pros first hyperventilate down to a pCO2 of less than 20, I think.
One can hold their breath even with severe hypoxia, even if severe (happy hypoxics). It's the hypercapnia, even of 42-43, that is unbearable for most apneic people.
P.S. WR is 24+ minutes for males.
And here's the physiology (also where the 3 mmHg of pCO2 increase per minute of apnea comes from):
Anesthesiology
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
Nah I'm Army, only choices with Bethesda or San Antonio. I'll be back out at some point.
Interestingly, Archimedes? 😛
forums.deeperblue.com
ABGs actually hurt. Had one as an intern. Not fun.
lol advanced snorkeling.
From personal experience, holding your breath while at maximum breath is harder and hurts, I think it has to do something with chest wall stretch receptors.
