Table 1.
Metabolic fatigue (lactate), arterial oxygen saturation (SpO2) and mechanical fatigue (CMJ test) produced in both experimental conditions
| BJ-Pre (95% CI) | BJ-Post (95% CI) | PL-Pre (95% CI) | PL-Post (95% CI) | P1 (ES-SP) | P2 (ES-SP) | P3 (ES-SP) | |
|---|---|---|---|---|---|---|---|
| Lactate (mmol. L−1) | 1.10 | 18.61★ | 1.06 | 17.33★ | 0.320 | < 0.001 | 0.307 |
| (0.99–1.20) | (15.89–21.32) | (0.94–1.19) | (16.12–18.54) | (0.10–0.16) | (0.98–1.00) | (0.10–0.16) | |
| SpO2 (%) | 97.46 | 94.27☨ | 97.01 | 94.46☨ | 0.011 | < 0.001 | 0.539 |
| (96.59–98.32) | (93.60–94.95) | (96.09–97.90) | (93.83–95.08) | (0.50–0.81) | (0.84–1.00) | (0.04–0.09) | |
| CMJ (cm) | 42.42 | 31.09☨ | 42.21 | 35.79☨ | 0.033 | 0.015 | 0.281 |
| (31.53–53.30) | (23.42–38.75) | (35.32–49.10) | (31.35–40.22) | (0.63–0.65) | (0.73–0.82) | (0.23–0.17) |
Abbreviations: BJ beetroot juice, CMJ countermovement jump, ES effect size, PL placebo, SP statistical power. P1-values for experimental condition x time interaction effect. P2-values for time effect. P3-values for experimental condition effect. ★A significant increase in blood lactate concentrations after WOD test (post-test) compared to pretest in both experimental conditions (p < 0.001). ☨A significant decrease in SpO2 and vertical jump height after WOD test (post-test) compared to pretest in both experimental conditions (p < 0.05). Data are provided as mean and 95% confidence intervals (95% CI)