Fig. 1

Average PVT- and SPFS scores during a full 5-week shift cycle. PVT, Psychomotor vigilence testing; SPFS, Samn-Perelli Fatigue scale
Average PVT- and SPFS scores during a full 5-week shift cycle. PVT, Psychomotor vigilence testing; SPFS, Samn-Perelli Fatigue scale