The responses of the physiological parameters during 30 minutes' head up tilt in the supine and prone sleeping positions
| Supine | Prone | ||
| Heart rate (bpm) | 129.7 | 132.92-150 | |
| Systolic blood pressure (mm Hg) | −1.8% | −3.2%2-150 | |
| Peripheral skin temperature (°C) | +0.1 | +0.32-150 | |
| Anterior abdominal skin temperature (°C) | −0.1 | +0.1 |
↵2-150 p < 0.05.
bpm, beats/minute.