Investigations of the lactate minimum test

Johnson, MA ORCID: https://orcid.org/0000-0002-8226-9438, Sharpe, GR ORCID: https://orcid.org/0000-0002-4575-2332 and Brown, PI, 2009. Investigations of the lactate minimum test. International Journal of Sports Medicine, 30 (6), pp. 448-454. ISSN 0172-4622

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Abstract

We evaluated: the agreement between lactate minimum and maximal lactate steady state (MLSS) cycling powers (study 1); whether rates of change of blood lactate concentration during the lactate minimum test reflect that of constant power exercise (study 2); whether the lactate minimum power is influenced by the muscle groups used to elevate blood lactate concentration (study 3).

Study 1: 32 subjects performed a lactate minimum test comprising a lactate elevation phase, recovery phase, and incremental phase (five 4 min stages); MLSS was subsequently determined.

Study 2: 8 subjects performed a lactate minimum test and five 22 min constant power tests at the incremental phase exercise intensities.

Study 3: 10 subjects performed two identical lactate minimum tests, except during the second test the lactate elevation phase comprised arm-cranking. Lactate minimum and MLSS powers demonstrated good agreement (mean bias ± 95% limits of agreement: 2±22 W). Rates of change of blood lactate concentration during each incremental phase stage and corresponding constant power test did not correlate. Lactate minimum power was lowered when arm-cranking was used during the lactate elevation phase (157±29 vs. 168±21 W; p<0.05). The lactate elevation phase modifies blood lactate concentration responses during the incremental phase, thus good agreement between lactate minimum and MLSS powers seems fortuitous.

Item Type:	Journal article
Publication Title:	International Journal of Sports Medicine
Creators:	Johnson, M.A., Sharpe, G.R. and Brown, P.I.
Publisher:	Georg Thieme Verlag KG
Place of Publication:	Stuttgart
Date:	2009
Volume:	30
Number:	6
ISSN:	0172-4622
Identifiers:	Number Type 10.1055/s-0028-1119404 DOI
Rights:	© Georg Thieme Verlag KG Stuttgart · New York
Divisions:	Schools > School of Science and Technology
Record created by:	EPrints Services
Date Added:	09 Oct 2015 10:14
Last Modified:	04 Feb 2022 11:20
URI:	https://irep.ntu.ac.uk/id/eprint/9877

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