Posted: Wed Feb 03, 2010 9:38 pm
Thanks
Climbing, hiking, mountaineering forum
https://www.summitpost.org/phpBB3/
https://www.summitpost.org/phpBB3/simulating-altitude-t51605-30.html
Maybe not having smoked so much dope when in college kept their lungs cleaner than those who got highRayMondo wrote:Apart from all the known technicalities, there remains the unanswered as to why some people who've never been high don't get problems when the well trained do.
Ze wrote:You have to improve the ability to transfer oxygen from lungs to blood. And people do that - by hyperventilating. The problem with hyperventilation is the side effects (like dizziness).
Sierra Ledge Rat wrote:Hyperventilation has absolutely nothing to do with the transfer oxygen from lungs to blood.
And don't even try to argue that R
Clear?
Hyperventilation
The most important feature of acclimatization to high altitude is hyperventilation. Its physiological value can be seen by considering the alveolar gas equation for a climber on the summit of Mount Everest. If the climber's alveolar PCO2 were 40 and respiratory exchange ratio 1, the climber's alveolar PO2 would be 43 - (40/1) = 3 mm Hg! However, by increasing the climber's ventilation fivefold, and thus reducing the climber's PCO2 to 8 mm Hg (see p. 16), the climber can raise his or her alveolar PO2 to 43 - 8 = 35 mm Hg. Typically, the arterial PCO2 in permanent residents at 4600 m (15,000 ft) is about 33 mm Hg.
FortMental wrote:It wouldn't be the first time that a textbook is wrong, or at the very least, inaccurate. Even Smith and Dempsey flub it in their paper, "Control of Breathing at High Altitude". Using the term "hyperventilation" to describe any-and-all involuntary increases in breathing rate is simply incorrect. You and your textbook are just being sloppy. Personally, I don't really give a shit.... I just like to make sure that when we talk, the words mean the same thing to everyone.