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Titolo:
Venous blood lactate increase after vertical jumping in volleyball athletes
Autore:
Chamari, K; Ahmaidi, S; Blum, JY; Hue, O; Temfemo, A; Hertogh, C; Mercier, B; Prefaut, C; Mercier, J;
Indirizzi:
Fac Sci Sport, Lab Rech APS & Conduits Motrices Adaptat Readapta, F-80025 Amiens, France Fac Sci Sport Amiens France F-80025 tat Readapta, F-80025 Amiens, France Hop Arnaud Villeneuve, Lab Physiol Interact, F-34295 Montpellier 05, France Hop Arnaud Villeneuve Montpellier France 05 34295 Montpellier 05, France Ctr Natl Med Sport, Tunis 1003, Tunisia Ctr Natl Med Sport Tunis Tunisia1003 atl Med Sport, Tunis 1003, Tunisia UFR STAPS Antilles Gyane, Lab ACTE, F-97159 Pointe A Pitre, France UFR STAPS Antilles Gyane Pointe A Pitre France F-97159 e A Pitre, France
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 1-2, volume: 85, anno: 2001,
pagine: 191 - 194
SICI:
1439-6319(200107)85:1-2<191:VBLIAV>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTENSITY INTERMITTENT EXERCISE; MUSCLE METABOLISM;
Keywords:
brief exercise; glycolysis; lactate; volleyball athletes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Ahmaidi, S Fac Sci Sport, Lab Rech APS & Conduits Motrices Adaptat Readapta, Allee P Grousset, F-80025 Amiens, France Fac Sci Sport Allee P Grousset Amiens France F-80025 s, France
Citazione:
K. Chamari et al., "Venous blood lactate increase after vertical jumping in volleyball athletes", EUR J A PHY, 85(1-2), 2001, pp. 191-194

Abstract

The aim of this study was to test the hypothesis that venous blood lactateconcentrations ([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 quietseated recovery periods of 45 min. After the first test, consisting of a single maximal jump [lasting congruent to0.6 s for the pushing phase, and inwhich the subjects jumped 64 (2.2) cm], forearm venous [La-] increased significantly with respect to rest at 1 min (t(1)), 3 min (t(3)), and 5 min (t(5)) 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 t(3) and t(5) 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 anaerobicmetabolism 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 16:24:53