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Local and systemic effects on blood lactate concentration during exercise with small and large muscle groups

Chudalla, Robin and Baerwalde, Sven and Schneider, Gerald and Maassen, Norbert (2005) Local and systemic effects on blood lactate concentration during exercise with small and large muscle groups. Pflügers Archiv European Journal of Physiology, 452 (6), pp. 690-697. Springer, Berlin, Heidelberg, New York. DOI: 10.1007/s0042400600825 ISSN 0031-6768

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Official URL: http://www.springerlink.com/content/jql737n647n0j1g0/?p=f6511bca95b043279ccf780589292208&pi=0

Abstract

To evaluate the relationship between lactate release and [lac]<sub>art</sub> and to investigate the influence of the catecholamines on the lactate release, 14 healthy men [age 25±3 (SE) year] were studied by superimposing cycle on forearm exercise, both at 65% of their maximal power reached in respective incremental tests. Handgrip exercise was performed for 30 min at 65% of peak power. In addition, between the tenth and the 22nd minute, cycling with the same intensity was superimposed. The increase in venous lactate concentration ([lac]<sub>ven</sub>) (rest: 1.3±0.4 mmol.l<sup>-1</sup>; 3rd min: 3.9±0.8 mmol.l<sup>-1</sup>) begins with the forearm exercise, whereas arterial lactate concentration ([lac]<sub>art</sub>) remains almost unchanged. Once cycling has been added to forearm exercise (COMB), [lac]<sub>art</sub> increases with a concomitant increase in [lac]<sub>ven</sub> (12th min: [lac]<sub>art</sub>, 3.2±1.3 mmol.l<sup>-1</sup>; [lac]<sub>ven</sub>, 5.7±2.2 mmol.l<sup>-1</sup>). A correlation between oxygen tension (P<sub>v</sub>O<sub>2</sub>) and [lac]<sub>ven</sub> cannot be detected. There is a significant correlation between [lac]<sub>art</sub> and norepinephrine ([NE]) (y=0.25x+1.2; r=0.815; p=0.01) but no correlation between lactate release and epinephrine ([EPI]) at moderate intensity. Our main conclusion is that lactate release from exercising muscles at moderate intensities is neither dependent on P<sub>v</sub>O<sub>2</sub> nor on [EPI] in the blood.

Item URL in elib:https://elib.dlr.de/46019/
Document Type:Article
Title:Local and systemic effects on blood lactate concentration during exercise with small and large muscle groups
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Chudalla, RobinMedical School HannoverUNSPECIFIED
Baerwalde, SvenUNSPECIFIEDUNSPECIFIED
Schneider, GeraldMedical School HannoverUNSPECIFIED
Maassen, NorbertMedical School HannoverUNSPECIFIED
Date:10 May 2005
Journal or Publication Title:Pflügers Archiv European Journal of Physiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:452
DOI :10.1007/s0042400600825
Page Range:pp. 690-697
Publisher:Springer, Berlin, Heidelberg, New York
ISSN:0031-6768
Status:Published
Keywords:Lactate, Muscle mass, Epinephrine, Norepinephrine, Distribution volume, Exercise
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Biowissenschaftliche Nutzerunterstützung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Biomedical Science Support Center
Deposited By: Lütz, Gertrud
Deposited On:15 Dec 2008
Last Modified:14 Jan 2010 23:56

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