Article: Altitude training revisited: the physiological factors in altitude training and how they affect human performance. (includes related article)

Altitude is a fascinating concept. Scientists have never stopped studying the people who live over 2,500m above sea level.

What physiological adaptations allow them to live in such hypoxic conditions, and what happens when they are transported to sea-level conditions? Do their special adaptations atrophy? How do these factors influence human performance?

Altitude raises many questions and creates many misunderstandings. A trip to Denver, CO, for example, takes one up to 1,700m above sea level. Though 1,700m hardly represents an extreme change, even for sea-level residents, most people claim that such heights affect their breathing.

It is questionable. ...

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