Alain Reinberg, Marc Riedel, Eric Brousse, Nadine Le Floc'h, René Clarisse, Benoît Mauvieux, Yvan Touitou, Michael H Smolensky, Michel Marlot, Stéphane Berrez, Mohamed Mechkouri
We investigated the circadian synchronization/desynchronization (by field-study assessment of differences in period, τ, of 16 coexisting and well-documented rhythms) of 30 healthy firemen (FM) exposed to irregular, difficult, and stressful nocturnal work hours who demonstrated excellent clinical tolerance (allochronism). Three groups of FM were studied (A = 12 FM on 24-h duty at the fire station; B = 9 FM on 24-h duty at the emergency call center; C = 9 day-shift administrative FM) of mostly comparable average age, body mass index, career duration, chronotype-morningness/eveningness, and trait of field dependence/independence...
October 2013: Chronobiology International