| Metabolic response during intermittent graded sprint running in moderate hypobaric hypoxia in competitive middle-distance runners. | |
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MedLine Citation:
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PMID: 17033792 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to determine whether the metabolic response and running performance during intermittent graded sprint running were affected by moderate hypobaric hypoxia (H; 2,500 m above sea level) in competitive middle-distance runners. Nine male runners performed intermittent graded sprint running until exhaustion, to evaluate the metabolic response and running performance in H and normobaric normoxia (N). The test constructed of incremental (25 m min(-1)) 20 s running bouts (4 degrees inclination) interspaced with 100 s recovery periods. Maximal running speed was not different between conditions [453 (7) m min(-1) vs. 458 (4) m min(-1) in N vs. H]. V(O2) at each speed was lower in H than N (ANOVA; P < 0.05). Although, oxygen deficit (D(O2)) at each speed was not different between N and H (ANOVA; P = 0.1), total accumulated D(O2) in all bouts was significantly higher in H than N [165 (10) ml kg(-1) in N and 173 (10) ml kg(-1) in H]. The ratio of D(O2).V(O2)(-1) was similar in all bouts, but higher in H than N. These results suggest that intermittent graded sprint running performance is not affected by moderate hypobaria despite a reduction in the energy supplied by aerobic metabolism due to a compensatory increase in the energy supplied by the anaerobic metabolism in competitive middle-distance runners. |
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Authors:
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Takeshi Ogawa; Keiji Hayashi; Masashi Ichinose; Hiroyuki Wada; Takeshi Nishiyasu |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2006-10-11 |
Journal Detail:
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Title: European journal of applied physiology Volume: 99 ISSN: 1439-6319 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2007 Jan |
Date Detail:
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Created Date: 2006-11-22 Completed Date: 2007-05-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 39-46 Citation Subset: IM |
Affiliation:
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Institute of Health and Sports Science, University of Tsukuba, Tsukuba City, 305-8574 Ibaraki, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anaerobic Threshold / physiology Anoxia / metabolism* Energy Metabolism / physiology* Exercise Test Humans Male Oxygen Consumption Physical Endurance / physiology Running / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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