The aim of study was to compare heart rate deflection point (HRDP) determined by visual and DMAX methods to Maximal lactate steady state (MLSS). Thirteen runners carried out incremental test Vameval and constant load tests (CLT). Velocity of HRDP (14,3 ± 1,13km.h-1) was significantly higher compared to DMAX (13,2 ± 1,35km.h-1) but they were not significantly correlated. However, both velocities, HRDP and DMAX, were not different from MLSS (13,8 ± 0,90km.h-1) while only HRDP has been significant correlated with MLSS (r = 0,75). On eight runners during CLT the blood lactate concentration did not show stability at HRDP velocity which to let us to conclude that HRPD is not appropriated to estimate MLSS. However, it may be used as aerobic capacity index.
Heart rate deflection point; Maximal lactate steady state; Endurance runners
