Table 1.
4h-sleep | 8h-sleep | P |
|||
---|---|---|---|---|---|
Condition | Night | Night × Condition | |||
TST (min) | |||||
Night I | 236 ± 2 | 465 ± 4 | < 0.001 | 0.294 | 0.923 |
Night II | 238 ± 1 | 467 ± 3 | |||
WASO (min) | |||||
Night I | 2 ± 1 | 18 ± 4 | 0.002 | 0.127 | 0.120 |
Night II | 2 ± 1 | 9 ± 3 | |||
WASO (%) | |||||
Night I | 1 ± 0 | 4 ± 1 | 0.012 | 0.149 | 0.143 |
Night II | 1 ± 0 | 2 ± 1 | |||
S1 (min) | |||||
Night I | 18 ± 2 | 52 ± 10 | 0.002 | 0.051 | 0.136 |
Night II | 16 ± 1 | 37 ± 8* | |||
S1 (%) | |||||
Night I | 7 ± 1 | 11 ± 2 | 0.061 | 0.150 | 0.127 |
Night II | 7 ± 1 | 8 ± 2* | |||
S2 (min) | |||||
Night I | 124 ± 7 | 255 ± 9 | < 0.001 | 0.097 | 0.382 |
Night II | 111 ± 7* | 254 ± 8 | |||
S2 (%) | |||||
Night I | 52 ± 3 | 55 ± 2 | 0.054 | < 0.001 | 0.135 |
Night II | 47 ± 3* | 54 ± 2 | |||
SWS (min) | |||||
Night I | 47 ± 7 | 49 ± 6 | 0.838 | 0.001 | 0.067 |
Night II | 69 ± 7*** | 61 ± 6** | |||
SWS (%) | |||||
Night I | 21 ± 3 | 10 ± 1 | < 0.001 | 0.002 | 0.018 |
Night II | 29 ± 3** | 13 ± 1** | |||
REM (min) | |||||
Night I | 43 ± 6 | 87 ± 11 | < 0.001 | 0.146 | 0.029 |
Night II | 38 ± 5 | 101 ± 8 | |||
REM (%) | |||||
Night I | 18 ± 2 | 19 ± 2 | 0.186 | 0.626 | 0.045 |
Night II | 16 ± 2 | 22 ± 2 | |||
MT (min) | |||||
Night I | 2 ± 0 | 4 ± 1 | < 0.001 | 0.130 | 0.223 |
Night II | 3 ± 0 | 5 ± 1 | |||
MT (%) | |||||
Night I | 1 ± 0 | 1 ± 0 | 0.244 | 0.237 | 0.567 |
Night II | 2 ± 1 | 1 ± 0 |
Data are mean ± SEM. TST, total time spent asleep; WASO, wake time after sleep onset; S1, sleep stage 1; S2, sleep stage 2; SWS, slow wave sleep; MT, movement time during TST. P-values are derived from ANOVA including the factors “Condition” for 4h-hour vs. 8h-sleep condition and Night for comparison of night 1 vs. night 2.
P < 0.05;
P < 0.01;
P < 0.001 for Student t-test comparing night 1 vs. night 2 within conditions.