lactater: Tools for Analyzing Lactate Thresholds

Set of tools for analyzing lactate thresholds from a step incremental test to exhaustion. Estimate Log-log, Onset of Blood Lactate Accumulation (OBLA), Baseline plus (Bsln+), the Dmax family, Lactate Turn Points (LTP), the Lactate / Intensity ratio (LTratio), and the Individual Anaerobic Thresholds of Dickhuth (IAT) and Stegmann in cycling, running, swimming, or rowing, with bootstrap confidence intervals, data-quality checks, training zones, test comparisons, training load, and the maximal lactate accumulation rate (VLamax). Beaver WL, Wasserman K, Whipp BJ (1985) <doi:10.1152/jappl.1985.59.6.1936>. Heck H, Mader A, Hess G, Mücke S, Müller R, Hollmann W (1985) <doi:10.1055/s-2008-1025824>. Kindermann W, Simon G, Keul J (1979) <doi:10.1007/BF00421101>. Skinner JS, Mclellan TH (1980) <doi:10.1080/02701367.1980.10609285>. Berg A, Jakob E, Lehmann M, Dickhuth HH, Huber G, Keul J (1990) PMID 2408033. Zoladz JA, Rademaker AC, Sargeant AJ (1995) <doi:10.1113/jphysiol.1995.sp020959>. Cheng B, Kuipers H, Snyder A, Keizer H, Jeukendrup A, Hesselink M (1992) <doi:10.1055/s-2007-1021309>. Bishop D, Jenkins DG, Mackinnon LT (1998) <doi:10.1097/00005768-199808000-00014>. Hughson RL, Weisiger KH, Swanson GD (1987) <doi:10.1152/jappl.1987.62.5.1975>. Jamnick NA, Botella J, Pyne DB, Bishop DJ (2018) <doi:10.1371/journal.pone.0199794>. Hofmann P, Tschakert G (2017) <doi:10.3389/fphys.2017.00337>. Hofmann P, Pokan R, von Duvillard SP, Seibert FJ, Zweiker R, Schmid P (1997) <doi:10.1097/00005768-199706000-00005>. Pokan R, Hofmann P, Von Duvillard SP, et al. (1997) <doi:10.1097/00005768-199708000-00009>. Dickhuth H-H, Yin L, Niess A, et al. (1999) <doi:10.1055/s-2007-971105>. Stegmann H, Kindermann W, Schnabel A (1981) <doi:10.1055/s-2008-1034604>. Heuberger JAAC, Gal P, Stuurman FE, et al. (2018) <doi:10.1371/journal.pone.0206846>. Meixner B, Nusser V, Koehler K, et al. (2024) <doi:10.14814/phy2.16086>.

Version: 1.0.0
Depends: R (≥ 4.1.0)
Imports: ggplot2 (≥ 4.0.0), ggtext (≥ 0.2.0), grid, patchwork, pillar, rlang, splines, stats, tibble, tools, utils, vctrs
Suggests: covr, dplyr, grDevices, knitr, lintr, pagedown, readxl, rmarkdown, gt, htmltools, spelling, systemfonts, testthat (≥ 3.0.0)
Published: 2026-11-13
DOI: 10.32614/CRAN.package.lactater
Author: Felipe Mattioni Maturana ORCID iD [aut, cre]
Maintainer: Felipe Mattioni Maturana <felipe.mattioni at med.uni-tuebingen.de>
BugReports: https://github.com/fmmattioni/lactater/issues
License: MIT + file LICENSE
Copyright: see file COPYRIGHTS
URL: https://fmmattioni.github.io/lactater/, https://github.com/fmmattioni/lactater
NeedsCompilation: no
Language: en-US
Materials: README, NEWS
CRAN checks: lactater results

Documentation:

Reference manual: lactater.html , lactater.pdf
Vignettes: Get started with lactater (source, R code)

Downloads:

Package source: lactater_1.0.0.tar.gz
Windows binaries: r-devel: lactater_0.2.0.zip, r-release: lactater_0.2.0.zip, r-oldrel: lactater_0.2.0.zip
macOS binaries: r-release (arm64): lactater_1.0.0.tgz, r-oldrel (arm64): lactater_1.0.0.tgz, r-release (x86_64): lactater_0.2.0.tgz, r-oldrel (x86_64): lactater_1.0.0.tgz
Old sources: lactater archive

Linking:

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