All participants (n = 19)

Mean ± SD

[Median]

Low fatigue

(n = 9)

Mean ± SD

[Median]

High fatigue

(n = 10)

Mean ± SD

[Median]

p-values

Day-shift day

Wake time

6:39 ± 0:44

[6:30]

6:35 ± 0:32

[6:21]

6:42 ± 0:53

[6:33]

0.72

Bed time

24:31 ± 0:44

[24:13]

24:16 ± 1:41

[24:30]

24:44 ± 1:47

[24:01]

0.84

Day off

Wake time

8:47 ± 1:51

[8:45]

8:54 ± 1:39

[8:45]

8:42 ± 2:06

[8:07]

0.84

Bed time

24:30 ± 1:24

[24:33]

24:27 ± 0:53

[24:22]

24:33 ± 1:48

[24:39]

0.84

Pre-night-shift day

Wake time

9:28 ± 1:41

[9:50]

9:56 ± 1:18

[10:15]

9:02 ± 1:53

[8:40]

0.24

Bed time

?

?

?

Post-night-shift day

Wake time

?

?

?

Bed time

25:59 ± 5:04

[24:25]

22:19 ± 5:31

[24:30]

23:33 ± 4:35

[24:16]

0.21