Document Detail


Venous blood lactate increase after vertical jumping in volleyball athletes.
MedLine Citation:
PMID:  11513316     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to test the hypothesis that venous blood lactate concentrations ([La-]) would vary from the beginning of brief exercise. Maximal vertical jumping was used as a model of brief intense exercise. Eleven healthy male volleyball players, aged [mean (SE)] 18.5 (0.7) years, performed three exercise tests with different protocols, each separated by quiet seated recovery periods of 45 min. After the first test, consisting of a single maximal jump [lasting approximately equals 0.6 s for the pushing phase, and in which the subjects jumped 64 (2.2) cm], forearm venous [La-] increased significantly with respect to rest at 1 min (t1), 3 min (t3), and 5 min (t5) of recovery. The second test, comprising six maximal jumps, each separated by 20-s recovery periods, resulted in an unchanged [La-] with respect to the baseline value. After the third test [i.e., six consecutive maximal jumps that lasted a total of 7.36 (0.33) s], [La-] increased significantly at t3 and t5 with respect to the pre-test value (F= 10.3, P < 0.001). We conclude that a significant venous [La-] increase occurs after vertical jumping. This result may be explained by the activation of lactic anaerobic metabolism at the very onset of exercise, which participates in energy production and/or in the resynthesis of the phosphocreatine that was used during such brief exercise.
Authors:
K Chamari; S Ahmaidi; J Y Blum; O Hue; A Temfemo; C Hertogh; B Mercier; C Préfaut; J Mercier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology     Volume:  85     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-08-21     Completed Date:  2002-01-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  191-4     Citation Subset:  IM    
Affiliation:
Laboratoire de Recherche APS et Conduites Motrices: Adaptations-Réadaptations, Faculté des Sciences du Sport, Amiens, France.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Anaerobic Threshold / physiology*
Arm / physiology
Humans
Lactic Acid / blood*
Leg / physiology
Locomotion / physiology*
Male
Sports
Veins
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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