Sleep efficiency and breathing during nights at high altitude versus nights at home for Pic du Midi staff.
Evaluation of Changes in Sleep Efficiency Among PIC DU MIDI Employees Between Nights Spent at Home (Without Increased Altitude) and Nights Spent in a Professional Environment Under High Altitude Conditions
We test whether nights spent at 2,877 m change sleep efficiency and breathing patterns for Pic du Midi staff compared with nights spent at home.
Quick facts
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 32 (estimated) |
| Ages | 18 Years to 65 Years |
| Sex | All |
| Sponsor | University Hospital, Toulouse Academic / other |
| Locations | 1 site (Toulouse, Oui) |
| Trial ID | NCT07423988 on ClinicalTrials.gov |
What this trial studies
This project records overnight sleep and cardiorespiratory signals in 32 employees of the Pic du Midi, of whom 13 sleep on-call at the 2,877 m summit and 19 sleep at lower altitude at home. Participants will undergo polysomnography and related sleep recordings to compare sleep organization and breathing parameters between nights at high altitude and nights at home. The protocol excludes people with cardiovascular disease, those taking cardiovascular or psychotropic medications, and those under legal guardianship. Recordings and analyses are performed through the University Hospital Toulouse sleep unit working with occupational health services for Pic du Midi staff.
Who should consider this trial
Good fit: Ideal candidates are Pic du Midi employees who have worked there at least one month and either sleep on-call at the 2,877 m summit or return home at night, who are covered by social security and can give informed written consent.
Not a fit: Individuals with a history of cardiovascular disease, those taking cardiovascular or psychotropic medications, or persons under legal guardianship are excluded and would not be eligible to benefit from participation.
Why it matters
Potential benefit: If successful, the results could help occupational physicians distinguish altitude-related changes from perceived sleep problems and guide sleep and work recommendations for high-altitude workers.
How similar studies have performed: Previous studies show acute high-altitude exposure commonly disrupts sleep and causes periodic breathing, but targeted polysomnography in workers with cyclical occupational exposure like Pic du Midi staff is uncommon.
Eligibility criteria
Show full inclusion / exclusion criteria
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
Where this trial is running
Toulouse, Oui
- Unité du sommeil, Hôpital Pierre Paul Riquet, 1 place du Docteur Baylac — Toulouse, Oui, France (Recruiting)
Study contacts
- Study coordinator: Rachel DEBS, MD
- Email: debs.r@chu-toulouse.fr
- Phone: 05 61 77 94 88
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.