Saturation of 97%
Started by anbuitachi
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Definitely concerning.
I am always btw/ 100% and 103%
I am always btw/ 100% and 103%
Probably pulmonary htn. You should start taking high dose Sildenafil.
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35 yos can have very different VO2, DO2, and V/Q mismatch
You should lose the blue nail polish.
Maybe your so conditioned that you don't need 100% SpO2 to have adequate oxygen delivery.
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deleted87051
COVID for sure.
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deleted171991
Obesity/atelectasis, possibly OSA (with compensatory shift of O2-Hgb dissociation curve).
All your calls are taking your breath away
i like this . this must be the reason
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deleted171991
Get it worked up. You may be having a lung disease and not know it (e.g. from GERD, or thromboembolic disease).
Or you may just have cold hands and/or poor peripheral perfusion. 😉
Most healthy BMI 21's do not have a sat of 97%. Get somebody to run an ABG on you, first.
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deleted171991
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.
You'd probably know if you had even smaller PEs (i.e. dyspnea). Your GERD may be more likely the culprit.
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deleted171991
I think athletes improve their oxygen extraction and resistance to anaerobic conditions during exercise, not decrease their resting O2 sat.
Now the real question is, how long can you hold your breath?
Now we all know that oxygen content is not the limiter in that regard.
Yeah yeah yeah, DO2, VO2, Lung volume, and how well you tolerate hypercapnia and hypoxia, etc. I still want to know.
Is your Hb 18g/dl or 12? Big difference..
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deleted162650
Are we talking static or dynamic apnea?
Better question is how low can you get your sat. Kudos to anyone who can get themselves below 90.
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deleted162650
It is if you’re a really good freediver. One of those sports that gets exponentially more dangerous the better you get.
Static. Lie down. Hyperventilate for a moment if you please. Deepest breath in you can and hold.
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deleted162650
I’ve hit 2.5 mins a bunch of times - not that great.
Statics don’t really tell you much and training statics isn’t really that helpful. Dynamics are where it’s at.
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.
I'm also curious now about doing this with a pulse-ox to see where I land.
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deleted171991
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 feel OK even with severe hypoxia (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):
pubs.asahq.org
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
One can feel OK even with severe hypoxia (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
Explore Anesthesiology, featuring peer‑reviewed articles, clinical studies, and the latest medical research.
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
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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
Explore Anesthesiology, featuring peer‑reviewed articles, clinical studies, and the latest medical research.
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
There are professionals for breath holding?
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deleted162650
As long as you’re doing statics on dry land, feel free to push as hard as you want. Worst case scenario you pass out on the couch and wake a few mins later. Any apnea training in water needs to be with a buddy that KNOWS how to save you if things go awry.
You can start with CO2 tables then move to O2 tables. A million ways to do dynamics from just walking while breath holding to doing interval breath holds on an exercise bike.
Go over to spearboard and search for posts by growingupninja. I’m pretty sure that dude has gills. Or better yet, sign up for an FII freediving course.
And for some entertainment, check out YouTube vids by Guillame Nery.
There are various free apps as well that are fairly useful for training your breathold. To me the basics of it are ignoring the urge and contractions of your diaphragm. If I were doing residency in Balboa, I'd be spearfishing every chance I got.
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deleted162650
Are you Navy? Are you stuck in Bethesda or Portsmouth?
If you make it out to SoCal let’s dive.
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deleted87051
I was never great, but I could swim 50yds on a single breath.
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
Explore Anesthesiology, featuring peer‑reviewed articles, clinical studies, and the latest medical research.
Yep, one can get even to a pCO2 of 250 and back, without obvious harm.
I second this. Best to practice breath holds on dry land and only move into the water with a partner. Several big names in free diving and big wave surfing have drowned because of severe hypoxia with no respiratory drive after hyperventilating. There are several courses out now for open ocean swimmers, free divers and surfers.
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deleted162650
The physiology of shallow water blackout is pretty neat.
You should never hyperventilate before diving for multiple physiologic reasons.
Interestingly, marine mammals actually dive on an exhale than on fully inflated lungs.
Nah I'm Army, only choices with Bethesda or San Antonio. I'll be back out at some point.
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deleted171991
Interestingly, Archimedes? 😛
Good like diving deep with a decreased body density due to the air in the lungs.
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Explain this wizardry please
Two things I have heard. One is it helps prevent the bends during deep dives and rapid accents. Second, by exhaling it allows the pressure of the water at deep depths to have less of a physical impact because their body can collapse in on itself.
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deleted87051
Wizardry indeed. And dolphins look funny at 300m.
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deleted162650
Here’s a discussion:
Exhale diving, theory and practice, a laymans view
Sebastian Murat pioneered the theory and practice of exhale diving and posted a great deal of information about it on these forums. I have gone back and looked at those threads repeatedly, always find something I had missed. I can no longer find some of those threads. If they are gone, it...
forums.deeperblue.com
Sebastian Murat has some YouTube videos as well.
We’re actually not allowed to free dive in the Navy. A few NDs have died that way. People still do it on their own time though. (I know that’s not why you asked Navy.)
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deleted162650
Sure, but are there any rules against “advanced snorkeling?”
What’s an ND? I’ve had a lot of exposure to Navy medicine, but I’m not (or ever have been) military.
ABGs actually hurt. Had one as an intern. Not fun.
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Ah yeah sorry. ND is the rating abbreviation for Navy Diver.
lol advanced snorkeling.
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deleted162650
If any of you military folk find yourselves in SoCal and would to come fish or dive, you have an open invitation on my boat.
(non-military requests will be evaluated on a case by case basis 😀)
I was stationed in San Diego for 5 years when I was enlisted. I’m going back there for 4 months in the first half of 2021 for my rotations. Can’t wait.
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.
