The effects of supplementation of sodium bicarbonate during an ergonometric test of crescent effort in men
Abstract
The supplementation of sodium bicarbonate (NaHCO3) isbeing used as a way to induce blood alkalosis and increase the buffering chemical capacity. The literature shows a need for studies that use supplemental NaHCO3at high intensities lasting more than 5 minutes. This study compares the effect of supplementation of NaHCO3in speed corresponding to maximum working speed (vMAX) and the respiratory compensation point (vRCP) during anincremental treadmill test. We evaluate six recreationally active males (22.00 ± 2.00 years, 81.80 ± 9.90 kg, 1.81 ± 0.06 m and BMI 25 ± 2 kg/m2) and previously trained. The volunteers presented to the laboratory on two different days. They ingested 0.1 g/kg body weight of NaHCO3(Group B) or placebo with calcium carbonate (CaCO3) (Group P) and performed an incremental test on a treadmill with 1km/h increments every 2 minutes until volitional exhaustion maximum. There was no significant difference in the velocities corresponding to vPCR and vMAX with supplementation of NaHCO3and in any respiratory parameter. The ingestion of NaHCO3at a concentration of 0.1 g/kg body weight does not improve performance in an incremental test on a treadmill.
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