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Table 1 Blood and plasma metabolites during the Yo-Yo IR2 test

From: Sodium bicarbonate intake improves high-intensity intermittent exercise performance in trained young men

  Blood lactate (mmol · l-1) Blood glucose (mmol · l-1) Plasma K+ (mmol · l-1) Plasma Na + (mmol · l-1)
  SBC CON SBC CON SBC CON SBC CON
Baseline 0.9 ± 0.1 0.8 ± 0.1 4.2 ± 0.2 4.1 ± 0.2 4.3 ± 0.4 4.2 ± 0.4 138 ± 3 138 ± 4
Pre-exercise: 2.0 ± 0.3 1.7 ± 0.2 4.2 ± 0.1 4.3 ± 0.1 4.1 ± 0.4 4.2 ± 0.4 141 ± 4 139 ± 4
Level 17.2: 2.8 ± 0.5 3.0 ± 0.7 4.3 ± 0.1 4.6 ± 0.1 4.8 ± 0.5 4.9 ± 0.5 144 ± 4 140 ± 4
Level 18.3: 4.2 ± 0.8 4.1 ± 0.7 4.5 ± 0.2 4.5 ± 0.2 5.1 ± 0.5 5.2 ± 0,5 143 ± 4 143 ± 4
Level 19.4: 6.3 ± 1.1 6.8 ± 0.9 4.5 ± 0.3 4.8 ± 0.3 5.6 ± 0.6 5.9 ± 0.6 145 ± 4 145 ± 4
Level 20.4: 6.8 ± 1.5 6.2 ± 0.5 4.5 ± 0.2 4.9 ± 0.2 5.1 ± 0.1 5.5 ± 0.2 147 ± 2 144 ± 2
Exhaustion: 11.3 ± 1.4* 9.4 ± 0.8 5.1 ± 0.5 5.2 ± 0.5 5.7 ± 0.5 5.8 ± 0.6 150 ± 4 145 ± 4
1 min recovery: 9.9 ± 1.1 9.0 ± 0.6 5.0 ± 0.5 5.4 ± 0.5 4.4 ± 0.4 4.5 ± 0.4 148 ± 4 145 ± 4
3 min recovery: 10.4 ± 1.1* 9.2 ± 0.6 5.9 ± 0.6 6.0 ± 0.6 3.8 ± 0.4 3.8 ± 0.3 146 ± 4 143 ± 4
5 min recovery: 10.3 ± 1.2* 8.9 ± 0.6 5.8 ± 0.6 5.9 ± 0.6 3.4 ± 0.3 3.7 ± 0.3 145 ± 4 143 ± 3
  1. Blood lactate and glucose as well as plasma K+ and Na + before, during and after a Yo-Yo IR2 performed in randomized order with (SBC) and without (CON) prior intake of sodium bicarbonate. Data are means ± SEM
  2. *Denotes a significant difference from CON. P < 0.05