Document Detail


Blood lactate concentrations during exercise: effect of sampling site and exercise mode.
MedLine Citation:
PMID:  9638031     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The purpose of the study was to compare blood lactate concentrations determined in blood sampled from three sites (finger capillary, ear-lobe capillary, and forearm vein) during exercise on three different ergometers (a cycle ergometer, a treadmill and an arm-crank ergometer). METHODS: A total of 312 well-trained subjects performed either a six-minute steady-state exercise (n = 219) or an incremental exercise test until exhaustion (n = 93). Blood was sampled from two sites after each exercise test and at the end of each stage of the incremental protocol, 852 pairs of blood samples were analysed. RESULTS: Results showed that, when exercise was performed on a cycle ergometer or a treadmill, no significant differences between venous and ear capillary samples were observed whereas finger capillary values were higher. On an arm-crank ergometer, venous and finger capillary lactate concentrations were usually higher than ear capillary values with some discrepancies depending on the times of sampling. CONCLUSIONS: We conclude that lactate values may differ depending on the sampling site and the type of exercise mode. An ear capillary sample may be preferred because it is less affected by lactate release in the arms and easier to obtain.
Authors:
J Dassonville; J Beillot; Y Lessard; J Jan; A M André; C Le Pourcelet; P Rochcongar; F Carré
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  38     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  1998 Mar 
Date Detail:
Created Date:  1998-07-17     Completed Date:  1998-07-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  39-46     Citation Subset:  IM    
Affiliation:
Unité de Biologie et de Médecine du Sport, Hôpital Pontchaillou, Rennes, France.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Blood Specimen Collection*
Exercise / physiology*
Exercise Test*
Humans
Lactic Acid / blood*
Middle Aged
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

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


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