Skip to main content

Table 3 Descriptive data of sleep parameters and results of post-hoc comparisons

From: Assessment of effects of total sleep deprivation and subsequent recovery sleep: a methodological strategy feasible without sleep laboratory

  Descriptive data Post-hoc comparisons
BL RS t p d
General PSG      
Total sleep timea 6:59:00 (0:52:59) 9:41:21 (1:08:18) − 13.972 < 0.001 2.657
Sleep efficiency % 94.20 (6.39) 98.18 (2.74) − 4.840 < 0.001 0.811
Sleep onset latencya 0:14:08 (0:11:38) 0:03:52 (0:03:45) 4.852 < 0.001 − 1.193
Time awakea 0:38:52 (0:30:53) 0:13:50 (0:16:36) 6.574 < 0.001 − 1.008
Nb. of awakenings 4.00 (2.18) 2.37 (1.45) 3.797 0.001 − 0.880
Sleep-stage specific PSG (absolute durations)
Duration non-REM 1a 0:28:15 (0:08:23) 0:29:42 (0:12:22) − 0.800 0.430 0.137
Duration non-REM 2a 3:55:42 (0:44:46) 5:17:47 (0:58:57) − 9.609 < 0.001 1.568
Duration REMa 1:08:56 (0:21:15) 1:27:16 (0:30:58) − 4.010 < 0.001 0.689
Duration SWSa 1:26:07 (0:24:53) 2:26:35 (0:44:00) − 9.964 < 0.001 1.532
Sleep-stage specific PSG (percentage relative to TST)
Percent non-REM 1b 6.85 (2.28) 5.15 (2.14) 5.010 < 0.001 − 0.769
Percent non-REM 2b 56.03 (5.91) 54.72 (7.76) 1.346 0.189 − 0.189
Percent REMb 16.60 (5.06) 14.92 (4.73) 2.107 0.044 − 0.343
Percent SWSb 20.53 (5.28) 25.22 (6.99) − 5.408 < 0.001 0.757
Subjective sleep quality     
Moodc 4.47 (0.97) 4.33 (1.06) 0.660 0.514 − 0.138
Freshnessd 3.53 (1.07) 3.67 (1.32) − 0.571 0.573 0.117
Tensione 4.40 (1.04) 4.33 (1.03) 0.284 0.778 − 0.068
Restfulness of sleepf 3.40 (0.62) 4.00 (0.87) − 3.525 0.001 0.794
  1. Results are presented as M (SD). df = 29. Bonferroni corrected α’s: General PSG α = 0.01, Sleep-Stage Specific PSG α = 0.0125, Subjective Sleep Quality α = 0.0125. Significant differences are marked in bold
  2. ahours:minutes:seconds
  3. bPercental amounts of sleep stages as relative to total sleep time (TST)
  4. cMood, ranging from “1—depressed” to “6—untroubled”
  5. dFreshness, ranging from “1—run down” to “6—refreshed”
  6. eTension, ranging from “1—tense” to “6—relaxed”
  7. fRestfulness, ranging from “1—not restful at all” to “5—very restful”