Table 2.
Blood lactate and electrolyte response throughout the battery of team sport-specific exercise tests.
| Baseline | Pre-warm-up | Pre-test | Pre-sprints | Post-sprints | Pre-Yo-Yo IR2 | Post-Yo-Yo IR2 | |
|---|---|---|---|---|---|---|---|
| SB-ORAL | |||||||
| BLa− (mmol·L−1) | 1.16 ± 0.15 | 1.32 ± 0.33 | 2.63 ± 0.81 | 2.35 ± 0.46 | 7.13 ± 1.78 | 4.09 ± 1.93 | 13.87 ± 2.90 ^ |
| Na+ (mmol·L−1) | 135 ± 2 | 137 ± 2 * | 137 ± 2 * | - | - | 138 ± 3 * | 139 ± 2 * |
| K+ (mmol·L−1) | 4.4 ± 0.5 | 3.9 ± 0.3 * | 4.0 ± 0.5 | - | - | 3.9 ± 0.4 | 3.8 ± 0.4 |
| SB-LOTION | |||||||
| BLa− (mmol·L−1) | 1.21 ± 0.28 | 1.36 ± 0.45 | 2.71 ± 1.06 | 2.41 ± 0.74 | 7.02 ± 2.43 | 3.82 ± 2.36 | 11.22 ± 2.48 |
| Na+ (mmol·L−1) | 135 ± 2 | 136 ± 2 | 136 ± 2 | - | - | 136 ± 3 | 137 ± 3 |
| K+ (mmol·L−1) | 4.3 ± 0.2 | 4.2 ± 0.4 | 4.2 ± 0.4 | - | - | 4.0 ± 0.4 | 3.9 ± 0.3 |
| PLA | |||||||
| BLa− (mmol·L−1) | 1.15 ± 0.28 | 1.31 ± 0.24 | 3.08 ± 1.68 | 2.55 ± 1.28 | 6.01 ± 2.45 | 4.20 ± 2.42 | 11.45 ± 2.55 |
| Na+ (mmol·L−1) | 134 ± 1 | 135 ± 2 | 135 ± 1 | - | - | 135 ± 2 | 136 ± 2 |
| K+ (mmol·L−1) | 4.3 ± 0.4 | 4.3 ± 0.3 | 4.2 ± 0.4 | - | - | 4.3 ± 0.7 | 4.2 ± 0.8 |
Values are presented as mean ±SD. Blood electrolytes were not measured pre- or post-sprints. SB-ORAL = oral sodium bicarbonate, SB-LOTION = topical sodium bicarbonate, PLA = placebo; * difference compared with PLA, ^ difference compared with SB-LOTION and PLA (p < 0.05).