Long-term intermittent hypoxia increases O2-transport capacity but not VO2max
Author
dc.contributor.author
Prommer, Nicole
Author
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Heinicke, Katja
Author
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Viola, Teresa
Author
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Cajigal, Jorge
Author
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Behn Thiele, Claus
Author
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Schmidt, Walter
Admission date
dc.date.accessioned
2018-12-20T14:11:40Z
Available date
dc.date.available
2018-12-20T14:11:40Z
Publication date
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2007
Cita de ítem
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High Altitude Medicine and Biology, Volumen 8, Issue 3, 2018, Pages 225-235
Identifier
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15270297
Identifier
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10.1089/ham.2007.8309
Identifier
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https://repositorio.uchile.cl/handle/2250/154583
Abstract
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Long-term intermittent hypoxia, characterized by several days or weeks at altitude with periodic stays at sea level, is a frequently occurring pattern of life in mountainous countries demanding a good state of physical performance. The aim of the study was to determine the effects of a typical South American type of long-term intermittent hypoxia on VO2max at altitude and at sea level. We therefore compared an intermittently exposed group of soldiers (IH) who regularly (6 months) performed hypoxic-normoxic cycles of 11 days at 3550 m and 3 days at sea level with a group of soldiers from sea level (SL, control group) at 0 m and in acute hypoxia at 3550 m. VO2max was determined in both groups 1 day after arrival at altitude and at sea level. At altitude, the decrease in VO2max was less pronounced in IH (10.6 ± 4.2%) than in SL (14.1 ± 4.7%). However, no significant differences in VO2max were found between the groups either at sea level or at altitude, although arterial oxygen content (Ca