Document Detail


Oxygen consumption and ventilation during constant-load exercise in runners and cyclists.
MedLine Citation:
PMID:  2770266     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of using specialized or no specialized muscle groups on ventilatory threshold (VT) and on maintenance of steady-state oxygen consumption during long term exercise on treadmill and on cycle ergometer was studied in ten endurance runners and nine cyclists. Initially, maximum oxygen consumption (VO2max) and VT were determined. Oxygen consumption (VO2) ventilation (VE) respiratory rate (f), and blood lactate (in the beginning and at the end of exercise) were measured during exercise at constant relative loads of 60, 70, and 80% of VO2max. In the runners, both VO2max and VT (expressed as % VO2max and VO2 l/min) were greater on treadmill than on cycle ergometer and in the cyclists, VO2max was higher on cycle ergometer than on treadmill, but no differences in VT were detected between the two tests. The VO2, VE, and f drifts correlated with blood lactate level as well as with the calculated VT. The results suggest that the effect of using specialized or no specialized muscle groups on the maintenance of VO2 steadiness is achieved through training-induced changes on the level of blood lactate and, in VT.
Authors:
M M Costa; A K Russo; I C Pićarro; T L Barros Neto; A C Silva; J Tarasantchi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  29     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  1989 Mar 
Date Detail:
Created Date:  1989-09-28     Completed Date:  1989-09-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  36-44     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Bicycling*
Humans
Male
Oxygen Consumption*
Respiratory Function Tests
Running*
Sports*

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


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