Document Detail

Exercise-induced arterial hypoxemia is not different during cycling and running in triathletes.
MedLine Citation:
PMID:  15773866     Owner:  NLM     Status:  MEDLINE    
This study examined the effect of running and cycling on exercise-induced arterial hypoxemia (EIAH) in individuals well trained in each modality. Thirteen male triathletes (X+/-SD: age=36+/-5 years, mass=69+/-8 kg, body fat=12+/-1%) performed progressive exercise to exhaustion during cycle ergometry and treadmill running. Gas exchange was determined, while oxyhemoglobin saturation (SaO(2)) was measured with an ear oximeter. At maximal exercise, the respiratory exchange ratio (1.15+/-0.06 vs. 1.10+/-0.05) and the ventilatory equivalent for oxygen uptake (37.6+/-3.8 vs. 34.2+/-2.7) were greater during cycling vs. running (P<0.05). However, there were no differences at maximal exercise in oxygen uptake (64.4+/-3.2 vs. 67.0+/-4.6 mL kg(-1) min(-1)), SaO(2) (93.4+/-2.8% vs. 92.6+/-2.2%), or the ventilatory equivalent for carbon dioxide (V(E)/VCO(2); 33.1+/-3.1 vs. 31.0+/-3.1), during cycling vs. running, respectively. During submaximal exercise, the V(E)/VCO(2) was less for cycling (26.0+/-1.0) compared with running (29.1+/-0.4; P<0.05), but this had no apparent effect on the SaO(2) response. In conclusion, EIAH was not significantly different during cycling and running in athletes who were well trained in both exercise modalities.
Paul B Laursen; Edward C Rhodes; Robert H Langill; Jack E Taunton; Donald C McKenzie
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Scandinavian journal of medicine & science in sports     Volume:  15     ISSN:  0905-7188     ISO Abbreviation:  Scand J Med Sci Sports     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-03-18     Completed Date:  2005-07-08     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9111504     Medline TA:  Scand J Med Sci Sports     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  113-7     Citation Subset:  IM    
School of Biomedical and Sports Science, Edith Cowen University, Bldg. 19 Rm. 162, 100 Joondalup Drive, Joondalup, Western Australia 6027, Australia.
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MeSH Terms
Analysis of Variance
Anoxia / blood*
Bicycling / physiology*
Oxygen Consumption / physiology
Physical Endurance / physiology*
Pulmonary Gas Exchange
Running / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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