Document Detail


Maximal lactate steady state concentration (MLSS): experimental and modelling approaches.
MedLine Citation:
PMID:  12527964     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
It is assumed that the maximal lactate steady state (MLSS) can be used to establish the highest workload that can be maintained over time without continual blood lactate accumulation. In untrained subjects, and in both elite and junior athletes, MLSS occurs at different blood lactate concentrations (BLC) for different exercise modes. This suggests that MLSS depends on the motor pattern of exercise and may be a function of the relationship between power output per unit muscle mass and the mass of the muscle primarily engaged in the activity. A computer model has been developed that takes account of current theories relating to the effect of exercise on BLC and to the factors that limit oxygen transport to the muscle cell. Simulations using this model support the suggestion that load per unit of engaged muscle mass accounts for task-specific levels of MLSS. Simulated differences in MLSS appear because the MLSS does not necessarily reflect the real maximal equilibrium between lactate formation and utilization, the LLSS. The higher difference between MLSS and LLSS measured in rowing ergometry compared to cycle ergometry seems to indicate a greater task sensitivity of the BLC response to given changes of exercise intensity during rowing. Whether such a difference may be relevant for a deeper understanding of task-specific training strategies remains a matter for further investigation.
Authors:
Ralph Beneke
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Publication Detail:
Type:  Journal Article; Review     Date:  2002-10-30
Journal Detail:
Title:  European journal of applied physiology     Volume:  88     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2003-01-15     Completed Date:  2003-07-21     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  361-9     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, Centre for Sports and Exercise Science, Central Campus, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, UK. rbeneke@essex.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Homeostasis*
Humans
Lactic Acid / blood*
Models, Biological*
Osmolar Concentration
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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