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Table 1 [HCO 3 - ], [Na + ], ABE, pH and PV 75 min after supplement ingestion on the first and the fifth day of testing with either NaHCO 3 or placebo supplementation

From: Multiday acute sodium bicarbonate intake improves endurance capacity and reduces acidosis in men

  NaHCO3 Placebo
  Day 1 Day 5 Day 1 Day 5
[HCO3-] (mmol &z.ccirf;l-1) 32.4 ± 1.8*** 32.6 ± 2.7*** 26.4 ± 1.8 26.0 ± 1.1
[Na+] (mmol &z.ccirf;l-1) 142.1 ± 3.9* 142.4 ± 3.0* 138.1 ± 1.2 139.3 ± 5.5
ABE (mmol &z.ccirf;l-1) 8.4 ± 1.7*** 8.3 ± 2.3*** 2.7 ± 1.7 2.0 ± 0.9
pH 7.49 ± 0.02*** 7.48 ± 0.02*** 7.44 ± 0.02 7.43 ± 0.02
PV (%) 55.5 ± 2.3 62.6 ± 3.8†† 56.0 ± 1.7 55.9 ± 3.3
  1. Values are mean ± SD (n = 8). [HCO3-], blood bicarbonate concentration; [Na+], blood sodium concentration; ABE, actual base excess; PV, plasma volume.
  2. *P < 0.05, *** P < 0.001 relative to placebo at the same time point; ††P < 0.01 relative to day 1.