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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.