Part 2-G.
How efficient are our lungs in
oxygen extraction?
Chronic hyperventilators (e.g., with CPs from 15 to 25 s) use only about 10-20% of inhaled oxygen at rest, the remaining 80-90% O2 is exhaled!
- People considered normal by medical standards retain only about a quarter (25%) of the oxygen that they inhale. Their lungs are more efficient at extracting oxygen.
- Those healthy people, who breathe little (4 l/min or less), can extract up to 50% or more of the oxygen they inhale. In addition, they inhale much fewer toxic fumes, dust particles, pollens, and other dangerous substances. This is another reason to breathe less.
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© 2008 Artour Rakhimov (If you copy the content of these pages for educational purposes, please, indicate the site address and author's name).
