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Updated: Apr 11, 2026

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
The relationship between the heart rate deflection point test and maximal lactate steady state
Paulo E DE Assis Pereira1, Vitor K Piubelli Carrara, Gustavo Mello Rissato
1Group of Studies and Research in Exercise Physiology, Federal University of São Paulo, Santos, São Paulo, Brazil - pereira.pauloeduardo@hotmail.co.
Background:
The aim of this study was to investigate the use of the Heart Rate Deflection Point Test (HRDP) in the determination of the velocity at the Maximal Lactate Steady State (MLSS).
Methods:
Fifteen untrained male participants took part in a 3000-m running performance on a 400-m track. The volunteers performed an incremental test for HRDP determination. The third test was constant velocity, which lasted around 30 minutes and was based around HRDP for MLSS determination.
Results:
Performance velocity at HRDP was strongly correlated with the MLSS running velocity (r=0.84; R2=0.71; P<0.0001). HRDP running velocity (mean±SD 9.0±1.3-km.h-1) was not significantly different (P>0.05) from MLSS velocity (9.3±1.3km.h-1). A high agreement was observed between methods (Bland and Altman analysis) with a mean error of 0.47 km.h-1.
Conclusions:
We can conclude that the HRDP was able to predict MLSS velocity.
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