The effects of changing from a full-day to a half-day shift work before a night duty shift on physiological and psychological functions during the night shift were investigated in 12 healthy unmarried nurses working on the same ward of a university hospital.
Three shift patterns, i.e., a day shift following a day shift, a night shift following a day shift, and a night shift following a half-day shift, were studied in terms of physical activity level, sympathetic and parasympathetic activity levels, cortisol, prolactin, NK cell activity, and changes in mood states.
The change to the half-day shift increased the duration of sleep before night duty by about 86 min and brought wake-up times forward by about 1 h, resulting in increases in rest and time before work.
In addition, the change was revealed to reduce the influence of reversed-phase circadian rhythms on autonomic nervous activity during the night shift.
The score for sleepiness was significantly lower at 0500 hours following a half-day shift.
There were some marginal but not significant differences in the scores reflecting the degree of vigor, tiredness and irritation during the night shift.
Although the prolactin concentration was significantly decreased at the start of the night shift after the half-day shift, there was no difference in cortisol concentration or NK cell activity between the usual night shift after a day shift and the night shift after the half-day shift. (...)
Mots-clés Pascal : Travail nocturne, Infirmier, Personnel sanitaire, Homme, Travail posté, Milieu hospitalier, Système nerveux autonome, Sommeil, Hormone, Stress, Cellule NK, Exercice physique, Humeur, Hydrocortisone, Prolactine, Médecine travail
Mots-clés Pascal anglais : Night work, Nurse, Health staff, Human, Shift work, Hospital environment, Autonomic nervous system, Sleep, Hormone, Stress, Natural killer cell, Physical exercise, Mood, Hydrocortisone, Prolactin, Occupational medicine
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0062515
Code Inist : 002B30A05. Création : 21/05/1997.