Table 1.
Blood lactate, blood gases, pH, and base excess (BE) associated with four interventions at rest, pre-warm-up, post-warm-up, and before and after the three high intensity bouts (mean ± SD).
| Rest | Before warm-up | Warm-up | After bout 1 | Before bout 2 | After bout 2 | Before bout 3 | After bout 3 | ||
|---|---|---|---|---|---|---|---|---|---|
| Blood lactate (mmol/L) |
PASSIVE | 1.2 ± 0.3 | 1.3 ± 0.2 | 3.3 ± 1.6 | 14.8 ± 2.0 | 9.8 ± 2.5* | 15.2 ± 2.2 | 10.5 ± 2.7* | 14.4 ± 2.5 |
| ACTIVE | 1.4 ± 0.6 | 1.3 ± 0.3 | 3.0 ± 1.2 | 14.2 ± 2.8 | 5.4 ± 2.4 | 13.6 ± 1.9 | 5.0 ± 1.5 | 13.0 ± 1.8 | |
| CHO | 1.2 ± 0.2 | 1.3 ± 0.2 | 3.1 ± 1.4 | 15.0 ± 2.0 | 6.2 ± 2.2 | 14.1 ± 2.3 | 5.8 ± 1.8 | 14.0 ± 2.0 | |
| BIC | 1.2 ± 0.4 | 1.4 ± 0.5 | 3.7 ± 1.6 | 15.6 ± 2.4 | 6.0 ± 1.5 | 15.6 ± 2.1† | 6.3.5 ± 1.6‡ | 15.5 ± 1.8†‡ | |
|
| |||||||||
| pH | PASSIVE | 7.41 ± 0.02 | 7.41 ± 0.01 | 7.41 ± 0.02 | 7.16 ± 0.04 | 7.29 ± 0.05* | 7.16 ± 0.04 | 7.28 ± 0.06* | 7.15 ± 0.06 |
| ACTIVE | 7.43 ± 0.02 | 7.43 ± 0.03 | 7.41 ± 0.03 | 7.18 ± 0.05 | 7.39 ± 0.04 | 7.19 ± 0.05 | 7.39 ± 0.05 | 7.19 ± 0.04 | |
| CHO | 7.43 ± 0.02 | 7.43 ± 0.01 | 7.42 ± 0.02 | 7.16 ± 0.07 | 7.36 ± 0.05 | 7.19 ± 0.06 | 7.36 ± 0.06 | 7.17 ± 0.05 | |
| BIC | 7.41 ± 0.01 | 7.47 ± 0.02* | 7.44 ± 0.01‡$ | 7.24 ± 0.06† | 7.43 ± 0.04† | 7.22 ± 0.06* | 7.39 ± 0.05† | 7.22 ± 0.04* | |
|
| |||||||||
| HCO3
−
(mmol/L) |
PASSIVE | 24.2 ± 1.3 | 24.0 ± 1.1 | 21.6 ± 1.7 | 12.0 ± 2.0 | 13.5 ± 3.0* | 10.1 ± 1.9* | 12.4 ± 2.0* | 9.4 ± 2.3 |
| ACTIVE | 24.2 ± 1.7 | 24.4 ± 1.6 | 21.9 ± 1.7 | 13.0 ± 2.4 | 18.1 ± 3.3 | 11.4 ± 2.3 | 18.4 ± 2.1 | 11.8 ± 1.5 | |
| CHO | 24.2 ± 1.2 | 24.1 ± 1.5 | 21.6 ± 2.2 | 12.2 ± 1.9 | 17.8 ± 2.9 | 11.9 ± 1.9 | 18.4 ± 2.5 | 11.5 ± 2.3 | |
| BIC | 24.5 ± 1.4 | 24.3 ± 1.2 | 25.1 ± 2.7* | 15.4 ± 2.9†$ | 21.2 ± 1.8†$ | 13.9 ± 2.0* | 21.1 ± 2.8†$ | 13.5 ± 2.6$ | |
|
| |||||||||
| BE (meq/L) |
PASSIVE | −1.7 ± 1.2 | −1.5 ± 1.2 | −4.4 ± 1.8 | −16.8 ± 2.2 | −13.4 ± 3.6* | −18.6 ± 2.7* | −14.7 ± 2.6* | −19.7 ± 3.1 |
| ACTIVE | −1.6 ± 1.4 | −1.6 ± 1.5 | −4.1 ± 1.8 | −15.5 ± 3.0 | −8.2 ± 3.8 | −17.0 ± 2.8 | −7.7 ± 2.3 | −16.5 ± 2.0 | |
| CHO | −1.5 ± 1.3 | −1.6 ± 1.2 | −4.3 ± 2.3 | −16.5 ± 2.4 | −8.4 ± 3.3 | −16.6 ± 2.6 | −7.7 ± 2.8 | −17.2 ± 3.0 | |
| BIC | −1.4 ± 1.3 | −1.1 ± 1.1 | −0.6 ± 2.7* | −12.6 ± 3.3†$ | −4.3 ± 2.2†$ | −13.9 ± 2.7* | −3.9 ± 2.1†$ | −14.3 ± 2.8†$ | |
|
| |||||||||
| PO2
(mmHg) |
PASSIVE | 78.3 ± 5.7 | 78.5 ± 5.9 | 82.6 ± 4.4 | 93.2 ± 5.9 | 83.6 ± 7.9 | 95.8 ± 7.2 | 84.9 ± 8.5 | 98.2 ± 7.6 |
| ACTIVE | 81.4 ± 9.3 | 80.1 ± 8.3 | 82.0 ± 4.7 | 91.7 ± 9.8 | 79.4 ± 3.4 | 95.9 ± 4.8 | 78.5 ± 5.4 | 94.7 ± 6.2 | |
| CHO | 83.3 ± 8.3 | 81.2 ± 8.1 | 84.7 ± 4.5 | 94.1 ± 5.5 | 81.0 ± 5.0 | 93.0 ± 4.1 | 77.0 ± 5.1 | 93.2 ± 6.0 | |
| BIC | 81.7 ± 7.5 | 81.1 ± 7.7 | 80.0 ± 5.9 | 89.6 ± 6.1 | 77.3 ± 8.2 | 90.2 ± 7.0 | 77.2 ± 6.9 | 91.6 ± 5.0 | |
|
| |||||||||
| PCO2
(mmHg) |
PASSIVE | 38.5 ± 2.2 | 38.7 ± 2.0 | 35.8 ± 2.1 | 34.2 ± 5.4 | 28.0 ± 3.2 | 28.8 ± 2.5* | 26.7 ± 2.3* | 28.4 ± 2.6 |
| ACTIVE | 37.9 ± 3.3 | 37.1 ± 3.5 | 36.3 ± 2.8 | 35.4 ± 4.7 | 32.2 ± 3.6 | 30.5 ± 3.6 | 32.0 ± 2.7 | 31.6 ± 2.9 | |
| CHO | 37.8 ± 1.9 | 37.5 ± 1.1 | 35.7 ± 3.4 | 33.8 ± 4.9 | 31.7 ± 2.6 | 32.0 ± 1.8 | 32.2 ± 2.7 | 31.9 ± 3.1 | |
| BIC | 39.0 ± 3.0 | 39.5 ± 3.7 | 38.5 ± 3.2 | 37.7 ± 5.9 | 33.3 ± 1.7$ | 33.4 ± 2.9 | 33.8 ± 3.0 | 32.4 ± 4.2$ | |
*Different to all other interventions.
†Different to CHO.
‡Different to ACTIVE.
$Different to PASSIVE.