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A Novel Approach to Estimating Maximal Lactate Utilization Speed (Fatmax) Using Lactate Measurements

##article.authors##

  • Denis Varvanets Moscow State University

DOI:

https://doi.org/10.51224/SRXIV.459

Keywords:

blood lactate, performance testing

Abstract

Maximizing fat oxidation during exercise, known as Fatmax, is crucial for endurance athletes and metabolic health. Traditional methods for determining Fatmax involve expensive cardiopulmonary exercise testing (CPET) equipment to measure oxygen consumption (VO₂) and carbon dioxide production (VCO₂). This study introduces a cost-effective method to estimate the speed of maximal lactate utilization (Fatmax) using lactate measurements obtained during incremental exercise tests. By leveraging the relationship between lactate dynamics and fat oxidation, we present a mathematical model and a Python implementation to accurately estimate Fatmax from lactate data alone.

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References

Brun J. F., Romain A. J., Mercier J. (2011) Lipoxmax ou oxydation maximale des lipides lors de l’exercice: Des mesures physiologiques aux applications cliniques. Réalités et incertitudes. Science & Sports 26, 57-71.

Frayn KN. Calculation of substrate oxidation rates in vivo from gaseous exchange. J Appl Physiol Respir Environ Exerc Physiol. 1983 Aug;55(2):628-34. doi: 10.1152/jappl.1983.55.2.628. PMID: 6618956.

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Posted

2024-10-01