[Desynchronization of the circadian rhythm of oral temperature in young human subjects with poor tolerance for night work].
15 night workers (mean age, 28 years; mean seniority 1.5 years) volunteered to measure their oral temperature (clinical thermometers 0.05 degrees C precision) 5 times/24 hrs. during a 21 day span. Time series were analyzed individually according to 3 methods. 11 of the subjects with a good tolerance had (with one exception) their prominent circadian period tau equal to 24 hrs. as well as a relatively large circadian amplitude (A from 0.19 to 0.42 degrees C). By contrast, subjects with a poor tolerance (sleep disorders, persisting fatigue, psychological troubles, etc.) had a tau value ranging from 24.9 to 25.7 hrs. associated with a relatively small rhythm amplitude (A from 0.04 to 0.13 degrees C). These results support the hypothesis that a desynchronisation of circadian rhythms help to explain why certain subjects do not tolerate shiftwork.
D000328:Adult; D001831:Body Temperature; D002940:Circadian Rhythm; D005221:Fatigue; D006801:Humans; D001523:Mental Disorders / Q000503:physiopathology; D009055:Mouth; D012893:Sleep Wake Disorders / Q000503:physiopathology; D013995:Time; D013997:Time Factors; D014937:Work; D014940:Work Schedule Tolerance
Désynchronisation du rythme circadien de la température orale chez des hommes jeunes tolérant mal le travail de nuit.