[Multi-shift work and work under conditions of jet lag. Questionnaire studies].

The authors discuss the disturbances in the biorhythm - sleep - waking in the workers who are on duty at the posts of command and in communication ouration pilots surpassing the time zones. The questionnaire method was used. The resultant desynchronization of the biological rhythm is exhibited mainly through the subjective feeling of fatigue and sleepiness. Adaptation and readaptation to changing working conditions occurs.