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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