Will hypoxic sets improve my ability to swim without air?

From what I understand, breath control training largely provides little (if any?) physiological training effect other than from the work itself (which is hindered anyway, making it a waste of time for training any of the energy systems). I assume there is room to mentally adapt and learn how to manage hypoxic suffering. But other than developing a strong aerobic base and increasing level of conditioning, can one actually have room to improve their hypoxic capacity specifically through hypoxic training? Thank you!
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  • Dumb question but how do you get you lungs measured? A breathing test and then measuring the air pushed out? at the club team i was on (as a teen) we did underwater weighing to determine body composition (ie bodyfat). to get that you had to do a lung capacity test. how much you inhale - exhale = volume. we did that several times. if a guy was over 14% fat or gal was over 21% fat you were in the running club that was before morning workout. also i was a labrat for U of Irvine/USOC for a whole bunch of tests in '83 that included the same test. we even did a muscle biopsy in our right thighs to determine red/pink/white slow-fast twitch ratios. we also did VO2 max and efficiency on a swim bench. oh and we did this one test that really really hated....lactic acid. where you get your finger pricked every length. after a few days of that you are left with 1 finger that is not bruised and no way to pick anything up. we did that again at the usa junior team training camp in '84. back then there was a big rumor that Salnikov was burning lactic acid as fuel. i remember watching him open a coke and a snickers about 30min before his 800m at the LA '83 meet and then shave a few tenths off his WR.
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  • Dumb question but how do you get you lungs measured? A breathing test and then measuring the air pushed out? at the club team i was on (as a teen) we did underwater weighing to determine body composition (ie bodyfat). to get that you had to do a lung capacity test. how much you inhale - exhale = volume. we did that several times. if a guy was over 14% fat or gal was over 21% fat you were in the running club that was before morning workout. also i was a labrat for U of Irvine/USOC for a whole bunch of tests in '83 that included the same test. we even did a muscle biopsy in our right thighs to determine red/pink/white slow-fast twitch ratios. we also did VO2 max and efficiency on a swim bench. oh and we did this one test that really really hated....lactic acid. where you get your finger pricked every length. after a few days of that you are left with 1 finger that is not bruised and no way to pick anything up. we did that again at the usa junior team training camp in '84. back then there was a big rumor that Salnikov was burning lactic acid as fuel. i remember watching him open a coke and a snickers about 30min before his 800m at the LA '83 meet and then shave a few tenths off his WR.
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