On-call work is an integral part of senior and junior patricians in a critical care department.

Several studies have examined the effect of sleep deprivation on physicians on call and the impact of sleep deprivation on the quality of patient care.

Some of these studies have shown that practitioners' concentration capacities have deteriorated as the guard progresses.

However, few studies have looked at the physical activity of practitioners over a period of on-call time (distance covered, number of steps,...), as well as other parameters than the time spent in communication over the telephone.

The age and seniority of practitioners seem to be factors that can influence these different parameters, and there are few figures in the literature.

Practitioners and juniors will be informed of the study. If they agree to participate in the study, each volunteer will receive an assessment of their cognitive functions before taking up their duties via the Montréal Cognitive Assessment (MOCA) version 7.1.

The place of exercise (emergencies, anaesthesia and ICU Each participant will be equipped with a connected watch with pedometer and cardiofrequencemeter function (Fitness Tracker F07Max).

During his on-call period a questionnaire will be given to him, with socio-demographic data, sleep duration and quality and the number of acts during the on-call period.

The telephone data will be analysed by querying the internal telephone system of the Reims University Hospital.

At the end of the on-call period, the analysis of the data from the connected watch will be analyzed and each volunteer will benefit from an evaluation of his cognitive functions via the Montreal Cognitive Assessment (MOCA) version 7.3 after taking up his duties.

Data will be collected during 2 shifts for each practitioner and junior

inclusion criteria :

- voluntary practitioners and residents of the critical care department (intensive care, emergencies and anaesthesia)

exclusion criteria :

• refusal to participate
• musculoskeletal disorders
• a significant medical history that prevents normal physical activity for age

voluntary practitioners and residents of the critical care department (intensive care, emergencies and anaesthesia)