Table 1 Pre- and post- 400 m sprint values and sprint-induced changes (Δ) of oxygen and carbon dioxide partial pressure (PO2 / PCO2), active blood bicarbonate concentration ([HCO3−]), active base excess (BE), oxygen saturation (sO2), and blood pH value (pHb) after 4 days of an acidizing (ACID) or alkalizing (BASE) dietary intervention
ACID | BASE | p-value | ||
|---|---|---|---|---|
PO2 [mmHg] | pre - sprint | 116.3 ± 26.4 | 118.7 ± 26.2 | 0.823 |
post - sprint | 118.1 ± 19.1 | 115.5 ± 20.1 | 0.789 | |
Δ sprint | 1.8 ± 28.3 | −3.3 ± 28.6 | 0.653 | |
PCO2 [mmHg] | pre - sprint | 35.1 ± 3.5 | 36.5 ± 4.9 | 0.387 |
post - sprint | 31.2 ± 7.5 | 33.3 ± 5.5 | 0.385 | |
Δ sprint | −3.9 ± 9.3 | − 3.3 ± 5.7 | 0.732 | |
[HCO3−] [mmol/L] | pre - sprint | 24.3 ± 2.0 | 25.9 ± 2.8 | 0.063 |
post - sprint | 12.8 ± 3.3 | 13.0 ± 2.4 | 0.818 | |
Δ sprint | −11.4 ± 3.8 | −12.9 ± 2.3 | 0.155 | |
BE [mmol/L] | pre - sprint | 1.30 ± 2.39 | 2.32 ± 2.20 | 0.184 |
post - sprint | −13.56 ± 3.39 | −13.87 ± 3.27 | 0.780 | |
Δ sprint | −14.86 ± 3.82 | −16.19 ± 2.88 | 0.310 | |
sO2 [%] | pre - sprint | 98.4 ± 0.9 | 98.5 ± 0.6 | 0.603 |
post - sprint | 97.0 ± 1.2 | 96.8 ± 1.5 | 0.668 | |
Δ sprint | −1.4 ± 1.3 | −1.8 ± 1.6 | 0.449 | |
pHb | pre - sprint | 7.46 ± 0.05 | 7.47 ± 0.03 | 0.373 |
post - sprint | 7.24 ± 0.04 | 7.22 ± 0.07 | 0.294 | |
Δ sprint | −0.22 ± 0.06 | −0.24 ± 0.07 | 0.347 |