Table 1. Demographics and all-night sleep variables.
| Variable | G/A | G/G | P |
|---|---|---|---|
| Sex (male/female) | 5/2 | 5/2 | — |
| Age | 26.4 ± 2.7 | 26.1 ± 2.9 | 0.45 |
| Sleep episode | 467.7 ± 2.2 | 461.3 ± 6.5 | 0.39 |
| Total sleep time | 453.9 ± 3.5 | 440.0 ± 7.4 | 0.17 |
| Sleep efficiency | 94.6 ± 0.7 | 91.7 ± 1.5 | 0.17 |
| Sleep latency | 12.0 ± 2.2 | 18.6 ± 6.4 | 0.37 |
| REM sleep latency | 72.5 ± 3.0 | 72.5 ± 5.6 | 0.99 |
| WASO | 1.7 ± 0.6 | 10.4 ± 5.4 | 0.18 |
| Stage 1 | 34.2 ± 3.9 | 47.5 ± 5.1 | 0.10 |
| Stage 2 | 238.4 ± 7.8 | 226.0 ± 8.5 | 0.33 |
| Stage 3 | 43.8 ± 2.9 | 36.5 ± 5.1 | 0.30 |
| Stage 4 | 48.7 ± 6.5 | 26.5 ± 8.5 | 0.02 |
| Slow-wave sleep | 92.5 ± 6.2 | 63.0 ± 9.3 | 0.006 |
| REM sleep | 88.7 ± 5.2 | 103.6 ± 5.4 | 0.14 |
| Movement time | 12.1 ± 2.0 | 10.8 ± 1.8 | 0.57 |
WASO, wakefulness after sleep onset. Slow-wave sleep, stages 3 and 4. Values are means ± SEM. P, two-tailed paired t tests.