| Effects of intermittent hypoxia on running economy. | |
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MedLine Citation:
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PMID: 20589591 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We investigated the effects of two 5-wk periods of intermittent hypoxia on running economy (RE). 11 male and female middle-distance runners were randomly assigned to the intermittent hypoxia group (IHG) or to the control group (CG). All athletes trained for a 13-wk period starting at pre-season until the competition season. The IHG spent additionally 2 h at rest on 3 days/wk for the first and the last 5 weeks in normobaric hypoxia (15-11% FiO2). RE, haematological parameters and body composition were determined at low altitude (600 m) at baseline, after the 5 (th), the 8 (th) and the 13 (th) week of training. RE, determined by the relative oxygen consumption during submaximal running, (-2.3+/-1.2 vs. -0.3+/-0.7 ml/min/kg, P<0.05) and total running time (+1.0+/-0.9 vs. +0.4+/-0.5 min, P<0.05) changed significantly between the IHG and CG only during the first 5-wk period. Haematological and cardiorespiratory changes indicate that the improved RE was associated with decreased cardiorespiratory costs and greater reliance on carbohydrate. Intermittent hypoxia did not affect RE during the second 5-wk period. These findings suggest that the effects of intermittent hypoxia on RE strongly depend on the training phase. |
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Authors:
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M Burtscher; H Gatterer; M Faulhaber; W Gerstgrasser; K Schenk |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial Date: 2010-06-29 |
Journal Detail:
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Title: International journal of sports medicine Volume: 31 ISSN: 1439-3964 ISO Abbreviation: Int J Sports Med Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-31 Completed Date: 2010-12-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8008349 Medline TA: Int J Sports Med Country: Germany |
Other Details:
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Languages: eng Pagination: 644-50 Citation Subset: IM |
Copyright Information:
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Georg Thieme Verlag KG Stuttgart . New York. |
Affiliation:
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Department of Sport Science, Medical Section,University of Innsbruck, Austria. Martin.Burtscher@uibk.ac.at |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Altitude Anoxia / metabolism* Athletes Athletic Performance / physiology Carbohydrate Metabolism / physiology Female Humans Male Oxygen Consumption / physiology* Running / physiology* Time Factors Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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