Quote:
Originally Posted by cdavis
Bill presented a method to measure RV a few years ago. Descend to 10 m (1 atm), exhale fully, return to the surface and exhale again into a container that you can measure (upside down milk carton for example). RV is double the measured volume. You can do it in a pool with different math. Elegant, makes sense, but I get suspiciously low numbers when I try it.
Connor
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Given that exhale spirometry gives noticably lower results after a freedive, I'm not surprised that you get low numbers.
Here're my results from a research hospital:
TLC: 7.50
Packed: 8.38
FRC: 3.22
RV: 1.08
RV measured using helium gas analysis. Full report for those that understand is attached. Pre is my normal inhale, Post is with packing. There's also pressure measurements in there that suggest that the air in the lungs post-packing is actually compressed.
