| Intermittent hypoxia does not affect endurance performance at moderate altitude in well-trained athletes. | |
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MedLine Citation:
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PMID: 20419592 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this study, we examined the effects of a pre-acclimatization programme on endurance performance at moderate altitude using a resting intermittent hypoxia protocol. The time-trial performance of 11 cyclists was determined at low altitude (600 m). Athletes were randomly assigned in a double-blind fashion to the hypoxia or the control group. The pre-acclimatization programme consisted of seven sessions each lasting 1 h in normobaric hypoxia (inspired fraction of oxygen of 12.5%, equivalent to approximately 4500 m) for the hypoxia group (n = 6) and in normoxia (inspired fraction of oxygen of 20.9%) for the control group (n = 5). The time-trials were repeated at moderate altitude (1970 m). Mean power output during the time-trial at moderate altitude was decreased in the hypoxia group (-0.26 +/- 0.11 W x kg(-1)) and in the control group (-0.13 +/- 0.04 W x kg(-1)) compared with at low altitude but did not differ between groups (P = 0.13). Our results suggest that the applied protocol of intermittent hypoxia had no positive effect on endurance performance at moderate altitude. Whether different intermittent hypoxia protocols are advantageous remains to be determined. |
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Authors:
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Martin Faulhaber; Hannes Gatterer; Thomas Haider; Carson Patterson; Martin Burtscher |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Journal of sports sciences Volume: 28 ISSN: 1466-447X ISO Abbreviation: J Sports Sci Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-04-26 Completed Date: 2010-08-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8405364 Medline TA: J Sports Sci Country: England |
Other Details:
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Languages: eng Pagination: 513-9 Citation Subset: IM |
Affiliation:
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Department of Sport Science, University of Innsbruck, Innsbruck, Austria. martin.faulhaber@uibk.ac.at |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acclimatization* Adult Altitude* Anoxia / physiopathology* Athletes* Bicycling / physiology* Double-Blind Method Exercise Test Humans Male Oxygen Consumption / physiology Physical Endurance / physiology* Risk Factors Statistics, Nonparametric Task Performance and Analysis Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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