Department of Occupational Medicine and Ergonomics;
Faculty of Medicine of Monastir;
University of Monastir;
Monastir;
Tunisia;
Department of Physiology;
Faculty of Pharmacy;
University of Monastir;
Tunisia;
Department of Physiology;
Faculty of Medicine of Monastir;
University of Monastir;
Monastir;
Tunisia;
Impaired; Alertness; Fixed; Night; Work; Healthcare; Workers; Epworth; Scale;