| Effects of short-term acclimatization to altitude (3200 m) on aerobic and anaerobic exercise performance. | |
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MedLine Citation:
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PMID: 16874590 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Aerobic exercise performance decreases upon ascent to altitude whereas anaerobic performance remains unchanged. Although the effects of 1 - 3 wk of altitude acclimatization on both aerobic and anaerobic exercise performance have been well studied, the effects of short-term altitude acclimatization (i.e., 45 h) on these parameters have not been well defined. Therefore, both aerobic and anaerobic exercise performance was evaluated in five healthy men (51.4 +/- 7.7 years, 175 +/- 4.2 cm, and 73.8 +/- 6.1 kg) at low altitude (LA, 600 m), upon acute exposure (approximately 1 - 3 h) to 3200 m (HA1) and on the third day of altitude exposure (HA3, 3200 m). Subjects performed three consecutive exercise tests, separated by approximately 1 - 3 h of rest, of various durations (i.e., 30 s, 5 min, and 50 min) on a cycle ergometer in each environmental condition. Anaerobic cycling performance (i. e., 30 s) was the same at LA, HA1, and HA3. Aerobic cycling performance (i. e., 5 min and 50 min) was reduced by 12.0 and 11.3 %, respectively, upon acute exposure to altitude. There was no change in the 5-min cycling performance but the 50-min cycling performance improved by 5.7 % from HA1 to HA3 which implies a 50 % recovery of the initial loss. These findings are important for individuals going to high altitude for work, for athletic competition, or recreation. |
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Authors:
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M Burtscher; M Faulhaber; M Flatz; R Likar; W Nachbauer |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of sports medicine Volume: 27 ISSN: 0172-4622 ISO Abbreviation: Int J Sports Med Publication Date: 2006 Aug |
Date Detail:
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Created Date: 2006-07-28 Completed Date: 2006-10-27 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: 629-35 Citation Subset: IM |
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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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological* Altitude* Anoxia / physiopathology* Ergometry / methods Heart Rate / physiology Humans Male Middle Aged Oxygen / blood Pulmonary Ventilation / physiology Recovery of Function / physiology |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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