Table 2.
Effects of experimental sleep conditions, forced awakening vs uninterrupted sleep, on measures of sleep continuity, and sleep architecture by 2 groups.*
| FA-US (N = 46) | US-FA (N = 49) | Group df = (1, 69) | Condition df = (1, 65) | |||
|---|---|---|---|---|---|---|
| FA | US | US | FA | |||
| Sleep continuity | ||||||
| Sleep onset latency | 25.9 ± 23.8 | 17.1 ± 16.9 | 14.7 ± 12.8 | 22.3 ± 16.2 | F = 1.58, P = 0.22 | F = 7.43, P = 0.008 |
| Total sleep time | 248.2 ± 24.9 | 433.5 ± 36.7 | 441.7 ± 34.3 | 248.3 ± 29.9 | F = 1.97, P = 0.17 | F = 1684, P < 0.001 |
| Sleep efficiency, % | 52.2 ± 5.2 | 91.4 ± 6.4 | 92.3 ± 7.7 | 52.3 ± 6.4 | F = 1.47, P = 0.23 | F = 1945, P < 0.001 |
| Wake after sleep onset | 205.5 ± 33.8 | 24.7 ± 19.2 | 23.6 ± 31.9 | 208.3 ± 28.1 | F = 0.02, P = 0.90 | F = 1914, P < 0.001 |
| Sleep architecture | ||||||
| N1 | 20.5 ± 8.8 | 17.4 ± 10.0 | 18.3 ± 14.2 | 20.8 ± 9.9 | F = 0.02, P = 0.90 | F = 5.09, P = 0.027 |
| N2 | 116.2 ± 17.1 | 216.1 ± 34.7 | 214.1 ± 43.3 | 119.0 ± 22.8 | F = 0.01, P = 0.93 | F = 497.8, P<0.001 |
| N3 | 67.2 ± 21.7 | 106.7 ± 35.7 | 108.0 ± 41.0 | 65.1 ± 21.0 | F = 0.39, P = 0.54 | F = 139.6, P < 0.001 |
| REM | 44.3 ± 16.3 | 93.3 ± 24.7 | 101.3 ± 24.1 | 43.3 ± 17.4 | F = 1.73, P = 0.20 | F = 451.8, P < 0.001 |
| N1% | 8.4 ± 3.3 | 4.3 ± 2.6 | 4.1 ± 3.5 | 8.3 ± 4.2 | F = 0.04, P = 0.84 | F = 97.8, P < 0.001 |
| N2% | 47.4 ± 7.5 | 50.5 ± 7.7 | 48.6 ± 9.9 | 48.2 ± 8.4 | F = 0.08, P = 0.78 | F = 3.16, P = 0.08 |
| N3% | 26.4 ± 7.3 | 23.8 ± 7.1 | 23.6.4 ± 8.5 | 26.7 ± 7.7 | F = 0.00, P = 0.97 | F = 10.08, P = 0.002 |
| REM% | 17.8 ± 6.0 | 21.4 ± 5.0 | 23.6 ± 4.9 | 16.8 ± 6.2 | F = 0.25, P = 0.63 | F = 60.3, P < 0.001 |
*
Sleep measures are shown in mean minutes or percentage (+/− SD).