Table 1.
Physiological parameters of the study subjects.
| Physiological parameters (N = 106) | Without mask (Control) | With mask only (A) | With mask and with micro fan (B) |
|---|---|---|---|
| Mean (SD) ETCO2, mmHg | |||
| At rest (Reading) | 30.9(3.37) | 34.3(3.32) | 32.2(3.27) |
| On mild exertion (Brisk walking) | 28.2(2.8) | 32.0(2.8) | 30.6 (3.1) |
| Mean (SD) FICO2, mmHg | |||
| At rest (Reading) | 8.2 (1.94) | 10.7 (2.61) | 7.8 (2.15) |
| On mild exertion (Brisk walking) | 9.9 (1.69) | 12.1 (2.47) | 10.8 (2.33) |
| Mean (SD) RR, bpm | |||
| At rest (Reading) | 18.0 (3.21) | 17.4 (3.57) | 16.8 (3.33) |
| On mild exertion (Brisk walking) | 23.5 (3.53) | 23.2 (3.73) | 23.2 (3.88) |
| Mean (SD) HR/bpm | |||
| At rest (Reading) | 89.6 (11.31) | 90.7(11.37) | 89.2 (11.27) |
| On mild exertion (Brisk walking) | 108.4 (9.84) | 110.2(7.73) | 109.5 (7.78) |
| Mean (SD) SpO2/% | |||
| At rest (Reading) | 99.6 (0.52) | 99.5 (0.51) | 99.6 (0.54) |
| On mild exertion (Brisk walking) | 99.2 (0.81) | 99.2 (0.65) | 99.2 (0.78) |
ETCO2 = end-tidal carbon dioxide, FICO2 = fractional inspired carbon dioxide, RR = respiratory rate, SpO2 = oxygen saturation, HR = Heart rate.