Table 3.
Cardiorespiratory data and oxygen saturation
| Position FiO2 | V̇e, l/min | Heart Rate, bpm | SpO2, % |
|---|---|---|---|
| Upright | |||
| 1.00 | 11.4 ± 1.9 | 64 ± 15 | 100 ± 1 |
| 0.21 | 12.6 ± 2.4 | 67 ± 9 | 98 ± 1 |
| 0.15 | 12.8 ± 1.5 | 70 ± 10 | 90 ± 1 |
| 0.10 | 14.3 ± 1.6 | 81 ± 12 | 73 ± 1 |
| Supine | |||
| 1.00 | 11.2 ± 1.0 | 56 ± 10 | 100 ± 1 |
| 0.21 | 10.0 ± 1.2 | 54 ± 8 | 98 ± 1 |
| 0.15 | 10.9 ± 2.1 | 62 ± 9 | 91 ± 3 |
| 0.10 | 12.4 ± 1.2 | 75 ± 9 | 71 ± 9 |
| Head-down tilt | |||
| 1.00 | 10.1 ± 0.7 | 56 ± 8 | 100 ± 1 |
| 0.21 | 11.0 ± 0.9 | 60 ± 8 | 99 ± 1 |
| 0.15 | 11.6 ± 2.7 | 62 ± 7 | 88 ± 8 |
Data are expressed as means ± SD. Data are collected during experimental trials. FiO2, fraction inspired oxygen; V̇e, exhaled minute ventilation BTPS, body temperature and pressure, saturated; bpm, beats per minute; SpO2, peripheral oxygen saturation.