Int J Sports Med 2014; 35(06): 517-521
DOI: 10.1055/s-0033-1353176
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Comparison of Selected Lactate Threshold Parameters with Maximal Lactate Steady State in Cycling

T. Hauser*
1  Sportsmedicine/-biology, Chemnitz University of Technology, Chemnitz, Germany
J. Adam*
2  Department of Internal Medicine/Cardiology, University of Leipzig, Heart Centre, Leipzig, Germany
H. Schulz
1  Sportsmedicine/-biology, Chemnitz University of Technology, Chemnitz, Germany
› Institutsangaben
Weitere Informationen


accepted after revision 14. Juli 2013

13. November 2013 (online)


The aim of the present investigation was to compare power at “onset of blood lactate accumulation” (OBLA), “individual anaerobic threshold” (IAT) and “+1.5 mmol ∙ l−1 lactate model” with power in maximal lactate steady state (MLSS) in cycling. However, there is a lack of studies concerning the absolute individual differences between different lactate parameters and MLSS.

A total of 57 male participants performed several 30-min constant-load tests to determine MLSS by measuring blood lactate concentration (BLC). Depending on BLC, power was increased or decreased by 10 W in the following 30-min test. For detecting power at different threshold parameters, an incremental test was performed that began at 40 W and increased by 40 W every 4 min.

Highly significant correlations were found between OBLA and MLSS: r=0.89 (mean difference −7.4 W); IAT and MLSS: r=0.83 (mean difference 12.4W), “+1.5 mmol ∙ l−1 lactate model” and MLSS: r=0.88 (mean difference −37.4W). On average, the parameters of OBLA and IAT approximate MLSS with no significant differences. The “+1.5 mmol ∙ l−1 lactate model” underestimates MLSS significantly.

Based on Bland-and-Altman, the comparison of power of all threshold parameters with power in MLSS shows great individual differences despite the high regression coefficients and low mean differences between these methods.

* These authors contributed equally to this article.