The accuracy of fixed intensity anchors to estimate lactate thresholds in recreational runners.

ABSTRACT:

Background

Endurance exercise intensities can be categorized into moderate, heavy, and severe domains based on physiological responses during incremental exercise testing. Since the evaluation of metabolic thresholds is not always possible, this study assessed the accuracy of fixed intensity anchors to estimate lactate thresholds.

Methods

165 (64 females, 101 males) recreational runners performed a maximal incremental treadmill test. The first (LT1) and second (LT2) lactate thresholds were determined as percentages of maximum heart rate (HR), oxygen consumption (VO₂), and running speed, alongside the rating of perceived exertion (RPE). Sex-specific mean values were used to determine the threshold intensities and to analyze the error magnitude for each method.

R

SUBMITTER: Nuuttila OP 

PROVIDER: S-EPMC12354492 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature