Table 1.
Sleep architecture
| Night 1 | Night 2 | t(23) | P | |
|---|---|---|---|---|
| N1 (%) | 9.9 ± 5.0 | 10.0 ± 4.4 | −0.1 | 0.95 |
| N2 (%) | 52.0 ± 9.1 | 53.1 ± 7.9 | −0.8 | 0.45 |
| N3 (%) | 19.2 ± 7.8 | 18.5 ± 6.7 | 0.5 | 0.60 |
| REM (%) | 18.9 ± 5.6 | 18.4 ± 6.0 | 0.5 | 0.62 |
| N1 (min) | 48.8 ± 22.7 | 50.1 ± 23.3 | −0.3 | 0.76 |
| N2 (min) | 260.8 ± 57.1 | 265.8 ± 58.0 | −0.4 | 0.67 |
| N3 (min) | 96.1 ± 40.0 | 90.5 ± 31.7 | 0.9 | 0.40 |
| REM (min) | 95.8 ± 33.5 | 90.7 ± 30.1 | 0.8 | 0.41 |
| total sleep (min) | 501.5 ± 61.4 | 497.0 ± 56.5 | 0.3 | 0.73 |
| WASO (min) | 37.1 ± 37.3 | 31.5 ± 16.8 | 0.6 | 0.53 |
| sleep efficiency (%) | 90.3 ± 7.8 | 91.1 ± 4.0 | −0.5 | 0.65 |
Sleep parameters (mean ± SD) in both nights and statistical results from paired t-tests.
WASO = wake after sleep onset.