Document Detail


The maximal lactate steady state in elite endurance athletes.
MedLine Citation:
PMID:  9504136     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The upper limit of blood lactate resulting in a lactate steady state during prolonged exercise is called the maximal lactate steady state (MLSS). The purpose of this study was to investigate the lactate response to steady-state exercise during a field test in elite endurance athletes. Plasma lactate levels were assessed in 13 elite triathletes and 13 elite cyclists (mean +/- SD; age 23.7 +/- 5.1 yr; HT 180.2 +/- 6.3 cm; WT 70.3 +/- 5.9 kg; VO2 max 68 +/- 3.7 ml/min/kg) during a 40 km-long time trial on a bicycle (4 km course x 10 laps). The steady state was demonstrated by monitoring the heart rate and timing every course run. The lactate levels were expected to correspond to MLSS. The mean level of lactate during the time trial was 7.4 +/- 2.5 mmol/l. Five athletes maintained plasma lactate levels which exceeded 10 mmol/l or more for almost 1 h. The large value of individual variability was conspicuous (range 3.2-12.2 mmol/l). These values exceeded all previous reported levels for MLSS from other investigators. Our observations are important in sport medical practice since the different lactate responses to exercise are used as parameters in training management.
Authors:
A R Hoogeveen; J Hoogsteen; G Schep
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Japanese journal of physiology     Volume:  47     ISSN:  0021-521X     ISO Abbreviation:  Jpn. J. Physiol.     Publication Date:  1997 Oct 
Date Detail:
Created Date:  1998-03-19     Completed Date:  1998-03-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  2985184R     Medline TA:  Jpn J Physiol     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  481-5     Citation Subset:  IM    
Affiliation:
St. Joseph Hospital Veldhoven, The Netherlands. A.Hoogeveen-Bos@inter.NL.net
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Bicycling / physiology
Exercise Test
Heart Rate / physiology
Humans
Lactic Acid / blood*
Physical Endurance / physiology
Physical Exertion / physiology*
Physical Fitness / physiology*
Reference Values
Sports / physiology*
Time Factors
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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