| Noninvasive profiling of exercise-induced hypoxemia in competitive cyclists. | |
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MedLine Citation:
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PMID: 17365952 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this case study was to profile maximal exercise and the incidence of exercise-induced arterial hypoxemia (EIAH) at three different altitudes within a group of competitive cyclists residing and training at 1,500 m. Ten male cyclists (category I or II professional road cyclists: ages, 27.7 +/- 6.1; weight, 69.9 +/- 6.9 kg) participated in three randomly assigned VO2max tests at sea level (SL), 1,500 m and 3000 m. Arterial saturation (pulse oximetry), ventilation, and power output (PO) were recorded continuously throughout the test. The SaO2 percentages at VO2max were significantly higher at SL when compared with 1500 m (p < 0.001); however, no difference was observed between VO2max values at either altitude (SL: 72.3 +/- 2.5 mL.kg-1.min-1, 1,500 m: 70.6 +/- 2.3 mL.kg-1.min-1), only when compared with 3,000 m: 63.9 +/- 2.1 mL.kg-1.min-1, p < 0.021. Percent SaO2 did correspond with maximal PO, and there was an overall main effect observed between POs as they continually declined from SL to 3,000 m (SL: 403.3 +/- 10.6 W; 1,500 m: 376.1 +/- 9.8 W; 3,000 m: 353.9 +/- 7.8 W; p < 0.0001). The results of this case study revealed that training and residing at 1,500 m did not reduce the incidence of EIAH during maximal exercise at 1,500 m for this selected group of cyclists. |
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Authors:
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Jason C Siegler; Robert A Robergs; Eric W Faria; Frank B Wyatt; Jason McCarthy |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Research in sports medicine (Print) Volume: 15 ISSN: 1543-8627 ISO Abbreviation: Res Sports Med Publication Date: 2007 Jan-Mar |
Date Detail:
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Created Date: 2007-03-16 Completed Date: 2007-05-18 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 101167637 Medline TA: Res Sports Med Country: United States |
Other Details:
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Languages: eng Pagination: 61-6 Citation Subset: IM |
Affiliation:
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Department of Sport, Health & Exercise Science, University of Hull, Hull, United Kingdom. J.Siegler@hull.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Altitude Anoxia / diagnosis*, etiology, physiopathology Bicycling / physiology* Exhalation Humans Male Oxygen Consumption Sports* United States |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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