TABLE 3.
Main polysomnography parameters during a daytime nap in normobaric normoxia (NN) and normobaric hypoxia (NH15: FiO2 14.7, NH13: FiO2 12.5).
| N | TST (min) | WASO (min) | SPT (min) | SOL (min) | N1 %TST | N2 %TST | N3 %TST | SE TST | SE SPT | % SpO2 TST | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NH | Women | 8 | 68.3 ± 21 | 21 ± 24.6 | 87.4 ± 7.4 | 3.9 ± 5.8 | 24 ± 22.1 | 39.8 ± 11.5 | 30.6 ± 20.4 | 74.7 ± 25.7 | 94 ± 7.6 | 96.1 ± 1.6 |
| Men | 7 | 71.5 ± 18.3 | 15.6 ± 11.7 | 84.3 ± 14.2 | 3.6 ± 3.2 | 16.7 ± 7.1 | 42.3 ± 14.8 | 37.6 ± 21.3 | 78.9 ± 15.5 | 93.3 ± 7.5 | 95.9 ± 1.1 | |
| All | 15 | 69.8 ± 19.2 | 18.5 ± 19.2 | 85.9 ± 10.8 | 3.8 ± 4.6 | 20.6 ± 16.7 | 40.9 ± 12.7 | 33.9 ± 20.4 | 76.6 ± 20.9 | 93.6 ± 7.3 | 96 ± 1.3 | |
| NH15 | Women | 7m | 83.6 ± 4.9 | 6.1 ± 3.2 | 89.4 ± 3.9 | 2.4 ± 1.9 | 13.1 ± 4.9 | 57.2 ± 11.2 | 18.2 ± 12.6 | 90.8 ± 4.3 | 97 ± 2.2 | 87.7 ± 2.5** |
| Men | 6m | 60.8 ± 17.4 | 18.6 ± 15.9 | 82.5 ± 3.9 | 4.1 ± 1.8 | 26.9 ± 12.2 | 63.4 ± 11.1 | 9.7 ± 10.6* | 67.1 ± 19.2 | 91 ± 4.7 | 85.8 ± 2.9** | |
| All | 13 | 73.1 ± 16.7 | 11.9 ± 12.4 | 86.2 ± 5.2 | 3.2 ± 2 | 19.4 ± 11.2 | 60 ± 11.1** | 14.3 ± 12.1** | 79.8 ± 17.7 | 94.2 ± 4.6 | 86.8 ± 2.7** | |
| NH13 | Women | 8 | 62.6 ± 24.4 | 21.2 ± 20.7 | 79.1 ± 12.8 | 5 ± 7.2 | 20.7 ± 13.5 | 63.2 ± 13.2** | 11.6 ± 15.8* | 70.2 ± 26.5 | 88.8 ± 12.6 | 78.4 ± 3.8** |
| Men | 7 | 62.6 ± 18.7 | 23.9 ± 16.5 | 77.6 ± 22.9 | 5 ± 4.3 | 23.2 ± 18.6 | 53.4 ± 16.3 | 18.7 ± 18.1 | 69.9 ± 18.3 | 85.3 ± 17.2 | 73.1 ± 5.8**A | |
| All | 15 | 62.6 ± 21.1 | 22.4 ± 18.3 | 78.4 ± 17.5 | 5 ± 5.8 | 21.9 ± 15.5 | 58.6 ± 15** | 14.9 ± 16.7** | 70 ± 22.2 | 87.1 ± 14.5 | 75.9 ± 5.4** | |
mMissing data due to lack of sleep. TST, Total Sleep Time; WASO, Wake after Sleep Onset; SPT, Sleep Period Time; SOL, Sleep Onset Latency; SE, Sleep Efficiency; SpO2, Peripheral oxygen saturation. Data as mean ± SD. *p < 0.05, **p < 0.001 comparing with NN. A p = 0.012 comparing with women in the same condition (Linear Mixed Model).