重炭酸塩注入の好気的運動耐容能および緩衝能に対する効果

概要

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objectives : We sought to investigate the effects of sodium bicarbonate (NaHCO_3^-) infusion on endurance athletic performance and buffering capacity. methods : Seven healthy volunteers served as study subjects. Each participant underwent two sessions of maximal incremental exercise testing on a cycle ergometer, one with NaHCO_3^- infusion (2 mEq/kg), and one with placebo infusion 15 minutes prior to the testing. Expired gas was analyzed on a breath-by-breath basis. Venous blood gas and venous plasma lactate concentration were measured before infusion, immediately before and after each exercise testing. results : Although NaHCO_3^- infusion induced significant increases in venous plasma pH and plasma bicarbonate concentration, these changes did not result in either an increase in post exercise-pre exercise lactate concentration difference, or a decrease in post exercise-pre exercise plasma bicarbonate concentration difference. Furthermore, NaHCO_3^- administration did not show favorable effects either on endurance time, maximal oxygen uptake, and oxygen uptake at the ventilatory threshold. conclusion : Results show that, in spite of the induction of alkalosis, the effects of NaHCO_3^- infusion on endurance performance and plasma buffering capacity were insignificant.
東海大学の論文