TABLE 6.
Overview of all polysomnography-related data required to evaluate the pre-defined hypotheses that were based on the reported results in the study of Rojc et al. (2014).
| Non-imputed data | |||||||
|
| |||||||
| pNAMB | NBR | HAMB | HBR | ||||
|
| |||||||
| (n = 8) |
Night 1 (n = 8) |
Night 10 (n = 7) |
Night 1 (n = 10) |
Night 10 (n = 8) |
Night 1 (n = 11) |
Night 10 (n = 10) |
|
| M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | |
| Hypothesis 1; the acute effect of hypoxia on sleep architecture | |||||||
| N2 (min) | 160 ± 52 | 191 ± 52 | 181 ± 58 | ||||
| N3 (min) | 104 ± 23 | 73 ± 26 | 78 ± 37 | ||||
| Hypothesis 2; the effect of sustained hypoxic exposure on sleep architecture | |||||||
| N1 (min) | 42 ± 21 | 79 ± 58 | 63 ± 38 | ||||
| N3 (min) | l104 ± 23 | 77 ± 28 | 88 ± 25 | ||||
| Hypothesis 3; the effect of BR on the number of awakenings | |||||||
| Arousals (# of events) ^° | 67 ± 31 | 76 ± 48 | 205 ± 128 | 181 ± 119 | |||
| Hypothesis 4; the effect of sustained BR on the number of awakenings | |||||||
| Arousals (# of events)° | 67 ± 31 | 71 ± 38 | 221 ± 119 | ||||
|
| |||||||
| Imputed data | |||||||
|
| |||||||
| pNAMB | NBR | HAMB | HBR | ||||
|
| |||||||
| (n = 12) |
Night 1 (n = 12) |
Night 10 (n = 12) |
Night 1 (n = 12) |
Night 10 (n = 12) |
Night 1 (n = 12) |
Night 10 (n = 12) |
|
| M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | M ± SD | |
|
| |||||||
| Hypothesis 1; the acute effect of hypoxia on sleep architecture | |||||||
| N2 (min) | 163 ± 42 | 189 ± 47 | 181 ± 55 | ||||
| N3 (min) ^° | 97 ± 22 | 73 ± 23 | 79 ± 36 | ||||
| Hypothesis 2; the effect of sustained hypoxic exposure on sleep architecture | |||||||
| N1 (min) ^ | 47 ± 20 | 88 ± 50 | 66 ± 35 | ||||
| N3 (min) ^ | 97 ± 22 | 78 ± 24 | 91 ± 23 | ||||
| Hypothesis 3; the effect of BR on the number of awakenings | |||||||
| Arousals (# of events) ^° | 73 ± 28 | 92 ± 45 | 214 ± 118 | 181 ± 113 | |||
| Hypothesis 4; the effect of sustained BR on the number of awakenings | |||||||
| Arousals (# of events)° | 73 ± 28 | 71 ± 28 | 208 ± 113 | ||||
Mean (M) and standard deviation (SD) are depicted for both the data set with- and the data set without imputed data.
+Indicates a significant difference between pNAMB and NBR, ^indicates a significant difference between pNAMB and HAMB, °indicates a significant difference between pNAMB and HBR; pNAMB, pseudo normobaric normoxic ambulatory; NBR, normobaric normoxic bed rest; HAMB, normobaric hypoxic ambulatory; HBR, normobaric hypoxic bed rest; Arousals, total number of arousals.