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Experientia. 1990 Dec 1;46(11-12):1185-7.

Human muscle structure after exposure to extreme altitude.

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  • 1Department of Anatomy, University of Bern, Switzerland.

Abstract

Muscle structural changes during typical mountaineering expeditions to the Himalayas were assessed on muscle biopsies. A significant reduction in muscle fiber size (-20%) and a loss of muscle oxidative capacity (-25%) were observed. The capillary network was not affected by catabolism. It is concluded that the oxygen supply to muscle mitochondria after high altitude exposure is thus improved.

PMID:
2253720
[PubMed - indexed for MEDLINE]
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