Table 1.
Participant characteristics of the control and sleep restriction (SR) groups
| Control group | SR group | t | P | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| n | 26 | – | 30 | – | – | NS |
| Age (years) | 16.81 | 1.17 | 16.43 | 0.94 | 1.33 | NS |
| Gender (% males) | 42.30 | – | 46.70 | – | 0.11 | NS |
| Body mass index | 20.38 | 2.55 | 20.43 | 2.88 | 0.07 | NS |
| Caffeinated drinks per day | 0.54 | 0.79 | 0.75 | 0.55 | 1.18 | NS |
| TIB on weekdays (h) | 6.09 | 0.85 | 6.40 | 0.94 | 1.24 | NS |
| TIB on weekends (h) | 8.45 | 1.25 | 8.46 | 1.08 | 0.99 | NS |
| TST on weekdays (h) | 5.37 | 0.73 | 5.61 | 0.86 | 1.11 | NS |
| TST on weekends (h) | 7.53 | 1.14 | 7.46 | 1.10 | 0.21 | NS |
| Sleep efficiency (%) | 88.45 | 4.66 | 87.86 | 5.46 | 0.42 | NS |
Sleep data were measured by wrist‐worn actigraphy for 1 week during screening and scored with Actiware software (version 6.0.2). SD, standard deviation; TIB, time in bed; TST, total sleep time; SD, standard deviation; NS, not significant.