Document Detail


Experiment and computer-aided simulation: complementary tools to understand exercise metabolism.
MedLine Citation:
PMID:  14641039     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
During the last two decades the concept of the MLSS (maximal lactate steady state) has been established. The MLSS detects the highest level of the BLC (blood lactate concentration) and the corresponding workload (MLSS workload) that can be maintained over time without continual BLC accumulation. In spite of a lack of experimental and/or theoretical foundation, it has been speculated that the level of the MLSS may decrease with increasing performance capacity. The potential inter-relationship between performance capacity and BLC response to prolonged constant workload will be analysed based on a recent study, which provided evidence that the MLSS is independent of performance whereas MLSS workload increases with performance capacity, and by a computer-aided simulation. The simulated model modifies and combines previous theories put forward to explain the response of BLC to exercise and incorporates a theory about limiting factors of oxygen transport to the muscle cell. Simulations consider the BLC response to selected prolonged constant workloads while paying special respect to changes in body structure and substrate utilization, which are generally accepted as limiting factors of performance capacity. This complex modulation of appearance and disappearance of lactate during constant prolonged exercise seems to support the experimental results, which indicated independence between MLSS and performance capacity.
Authors:
R Beneke
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biochemical Society transactions     Volume:  31     ISSN:  0300-5127     ISO Abbreviation:  Biochem. Soc. Trans.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-03     Completed Date:  2004-08-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7506897     Medline TA:  Biochem Soc Trans     Country:  England    
Other Details:
Languages:  eng     Pagination:  1263-6     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, Centre for Sports and Exercise Science, Central Campus, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, U.K. rbeneke@essex.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adult
Computer Simulation
Energy Metabolism*
Exercise*
Humans
Male

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


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