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Lactate response to short term exercise with elevated starting levels

Beneke, Ralph and Wittekind, Anna L and Muehling, Monika and Bleif, Imogen and Leithäuser, Renate M (2010) 'Lactate response to short term exercise with elevated starting levels.' European Journal Of Applied Physiology, 110 (1). pp. 215-218. ISSN 1439-6319

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Abstract

A model that describes the blood lactate concentration (BLC) dynamics [BLC(t)] of a Wingate Anaerobic Test (WAnT) as a function of (a) BLC at the start of exercise (BLC(0)), (b) extra-vascular increase in lactate (A), (c) two corresponding velocity constants of appearance (k (1)) and disappearance (k (2)) of lactate into and out of the blood requires that BLC(0) is equal to resting BLC (BLC(rest)). We developed a model that considers an elevated BLC(0). 19 males performed WAnTs with warm-ups increasing (p < 0.001) BLC(0). The goodness of each individual fit improved (p < 0.05) if the difference between BLC(rest) and BLC(0) (Delta BLC) was higher than 1.0 mmol l(-1). All differences between old and new model (p < 0.05) in A, k (1) and k (2) were interrelated with and increased with Delta BLC (p < 0.05). The new model well describes BLC(t) and prevents substantial errors concerning lactate generation and dynamics if BLC(0) is elevated by more than 1.0 mmol l(-1).

Item Type: Article
Uncontrolled Keywords: Kinetics; Invasion; Evasion; Sprint; Warm-up
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 26 Sep 2011 13:14
Last Modified: 16 Dec 2014 11:19
URI: http://repository.essex.ac.uk/id/eprint/769

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