Rowing exercise at 5% above maximal lactate steady state resulted in significantly higher blood lactate concentration (5.02 vs. 3.07 mmol/L, p<0.05) compared to MLSS, with no VO2 slow component.
Does rowing exercise at 5% above MLSS alter physiological responses compared to MLSS in trained male rowers?
Exercise at 5% above MLSS induces a non-sustainable blood lactate response but maintains stable muscle oxygenation and no V̇O2 slow component in trained rowers.
Tasa de eventos absoluta: 5.02% vs 3.07%
valor p: p=<0.05
This study aimed to compare physiological responses during rowing ergometer exercise at the maximal lactate steady state (MLSS) and 5% above the MLSS (MLSS+5%). Blood lactate concentration (BLC), oxygen uptake (V̇O2) kinetics, heart rate (HR), and muscle oxygenation (deoxygenated hemoglobin HHb and tissue saturation index TSI) of the vastus lateralis were compared. Twelve male rowers (V̇O2max: 53.0 ± 6.3 mL·kg-1·min-1) completed an incremental test and several 30-min constant workload tests to determine their MLSS and MLSS+5%. At the 30th minute, exercise at MLSS+5% (195 ± 25 W) resulted in significantly higher BLC (5.02 ± 1.44 vs. 3.07 ± 1.03 mmol·L-1), V̇O2 (3.56 ± 0.35 vs. 3.33 ± 0.33 L·min-1), HR (177 ± 11 vs. 166 ± 10 bpm), and HHb (83.9 ± 16.9 vs. 72.7 ± 13.2%) compared to MLSS (185 ± 24 W) (p 2 slow component was observed during either the MLSS or MLSS+5% trials. In conclusion, while exercise 5% above MLSS induced a non-sustainable BLC response, there was no apparent V̇O2 slow component and HHb remained stable in the vastus lateralis during rowing exercise.
Trevisol et al. (Wed,) conducted a other in Trained male rowers (n=12). Rowing ergometer exercise at 5% above maximal lactate steady state (MLSS+5%) vs. Exercise at maximal lactate steady state (MLSS) (185 ± 24 W) was evaluated on Blood lactate concentration (BLC) at 30 minutes (p=<0.05). Rowing exercise at 5% above maximal lactate steady state resulted in significantly higher blood lactate concentration (5.02 vs. 3.07 mmol/L, p<0.05) compared to MLSS, with no VO2 slow component.