Evaluation of Changes in Sleep Efficiency Among PIC DU MIDI Staff Between Nights Spent at Home and Nights Spent in the Workplace Under High Altitude Conditions

University Hospital, Toulouse32 enrolled

Overview

Sleep organization and cardiorespiratory parameters are disrupted in extreme conditions such as high altitude. The pathophysiology of medical problems related to acute high-altitude exposure is partially understood, but sleep quality indicators are very rarely measured under these conditions. This lack of information is even more pronounced among employees subjected to cyclical exposure to high-altitude hypoxic stress, as is the case for the employees at the Pic du Midi. These 32 employees regularly report to their occupational physician difficulties in managing their sleep disorders, struggling to distinguish symptoms from objective changes in their sleep cycles. Among them, 13 are on call at the summit of the Pic du Midi (2,877 m), while 19 work there during the day and return home to a lower altitude at night to sleep. The investigators also wish to measure structural changes in sleep and its cardiorespiratory parameters using polysomnography in these 13 employees, comparing nights spent at home at normal altitude with those spent at the summit of the Pic du Midi. These changes will also be compared to those of a group of 19 employees who do not sleep at high altitude..

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Enrollment

Conditions

Sleep Disorder (Disorder)

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: Group "with on-call night at high altitude at the Pic du Midi": * Employed at the Pic du Midi for at least one month * Working nights at high altitude (at the Pic du Midi, altitude of 2877m) as part of their professional activity * Person affiliated with or covered by a social security scheme * Free, informed, and written consent signed by the participant and the investigator Night group "without on-call night at high altitude": * Employed at the Pic du Midi for at least one month * Not working nights at high altitude (at the Pic du Midi, altitude of 2877m) as part of their professional activity * Person affiliated with or covered by a social security scheme social * Free, informed and written consent signed by the participant and the investigator Exclusion Criteria: * For all participants: * History of cardiovascular disease * Use of cardiovascular/psychotropic medication * Participant under legal guardianship or other protective regime (guardianship, curatorship) * Pregnant or breastfeeding woman * French language proficiency insufficient to complete the questionnaires

Outcomes

Primary Outcomes

Comparison of sleep efficiency (total sleep time / total sleep period) under high altitude conditions (at 2877 m) versus without increased altitude (at home)

Sleep efficiency will be compared, according to the ratio = total sleep time (TST)/ total sleep period (PTS) calculated from a polysomnographic recording, between the night spent at high altitude (2877m, at PIC du MIDI) and the second night spent at home (not increased altitude) among PIC du MIDI employees performing on-call nights at high altitude.