Document Detail


Noninvasive profiling of exercise-induced hypoxemia in competitive cyclists.
MedLine Citation:
PMID:  17365952     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Jason C Siegler; Robert A Robergs; Eric W Faria; Frank B Wyatt; Jason McCarthy
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Research in sports medicine (Print)     Volume:  15     ISSN:  1543-8627     ISO Abbreviation:  Res Sports Med     Publication Date:    2007 Jan-Mar
Date Detail:
Created Date:  2007-03-16     Completed Date:  2007-05-18     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  101167637     Medline TA:  Res Sports Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  61-6     Citation Subset:  IM    
Affiliation:
Department of Sport, Health & Exercise Science, University of Hull, Hull, United Kingdom. J.Siegler@hull.ac.uk
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MeSH Terms
Descriptor/Qualifier:
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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