Table 2 Changes in maternal and fetal physiological parameters breathing through N95 masks compared to controls breathing ambient air
N95 Mask vs Control | Mean difference | SE (95 % CI) | P value |
|---|---|---|---|
Pre exercise maternal heart rate | −2.0 | 1.3 (−4.7; 0.6) | 0.11 |
Exercise maternal heart rate | −0.5 | 1.4 (−3.4; 2.4) | 0.71 |
Post exercise maternal heart rate | −0.8 | 1.6 (−4.1; 2.5) | 0.61 |
Baseline fetal heart rate | −0.5 | 0.6 −1.6; 0.6) | 0.33 |
Capillary lactate | 0.5 | 0.5 (−0.3; 1.4) | 0.17 |
Finger-tip capillary oxygen saturation | 0.1 | 0.02 (−0.06; 0.14 | 0.32 |
Borg scale | 1.6 | 0.9 (−0.01; 3.3) | 0.060 |