TABLE 3.
Effects of OSA and depression on cardiorespiratory and autonomic variables during NREM and REM sleep.
| OSAD+ | OSAD- | Control | Probabilities (MAN-Whitney U-test for groups) | |||
|---|---|---|---|---|---|---|
| OSAD + vs. OSAD- | OSAD- vs. control | OSAD + vs. Control | ||||
| NREM Sleep | ||||||
| fR(breaths/min) | 16.6 ± 2.4 | 17.3 ± 3.0 | 21.4 ± 3.6 | ns | <0.001 | <0.001 |
| ARSA(ms) | 26.6 ± 40.3 | 34.1 ± 39.8 | 19.1 ± 13.0 | ns | 0.018 | ns |
| λ | 0.67 ± 0.13 | 0.56 ± 0.19 | 0.63 ± 0.12 | <0.001 | 0.006 | 0.02 |
| LF (bpm2) | 3.54 ± 4.22 | 4.61 ± 4.61 | 5.53 ± 7.20 | 0.03 | ns | ns |
| HF (bpm2) | 1.56 ± 1.55 | 2.08 ± 3.18 | 2.52 ± 4.51 | ns | ns | ns |
| nLF | 65.4 ± 18.8 | 70.8 ± 19.0 | 69.8 ± 18.3 | 0.013 | ns | ns |
| nHF | 34.6 ± 13.6 | 29.3 ± 19.0 | 30.3 ± 18.3 | 0.013 | ns | ns |
| REM Sleep | ||||||
| fR(breaths/min) | 17.2 ± 2.1 | 17.4 ± 2.8 | 22.0 ± 3.1 | ns | <0.001 | <0.001 |
| ARSA(ms) | 31.2 ± 45.0 | 26.9 ± 37.4 | 18.7 ± 22.8 | ns | 0.028 | 0.002 |
| λ | 0.57 ± 0.15 | 0.50 ± 0.17 | 0.62 ± 0.12 | 0.006 | <0.001 | 0.02 |
| LF (bpm2) | 3.81 ± 3.79 | 5.08 ± 4.75 | 4.64 ± 5.91 | 0.04 | ns | ns |
| HF (bpm2) | 1.43 ± 1.62 | 1.70 ± 2.83 | 2.05 ± 3.92 | ns | ns | ns |
| nLF | 71.9 ± 15.9 | 76.9 ± 16.5 | 75.1 ± 15.2 | 0.009 | ns | ns |
| nHF | 28.2 ± 15.9 | 23.1 ± 16.4 | 24.9 ± 15.2 | 0.009 | ns | ns |
*ns indicates no significant difference.