Table 4. Blood lactate (BLA, mmol·l-1) during weeks 2, 4 and 6 and oxygen saturation (SpO2, %) during weeks 4 and 6. Values represent mean (±standard deviation).
Weeks
Mask
Control
BLA
2 4 6
10.2 (3.0) 10.1 (3.0) 10.9 (2.9)
11.0 (3.5) 10.1 (3.4) 9.8 (3.3)
SpO2
4 6
94.4 (3.2) * 93.2 (3.0) *
96.0 (1.6) 95.8 (1.7)
* Significantly lower than the control group (p < 0.05).