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Can a 24-Hour shift wreck a Doctor's body more than a night shift?

NCT ID NCT01874704

Knowledge-focused Sponsor: University Hospital, Clermont-Ferrand Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 05, 2026 · Last updated Aug 06, 2026 · Updated 1 time

Summary

This trial asks whether the length of a shift affects stress levels in emergency physicians. Doctors will work either a 24-hour shift or a 14-hour night shift, and researchers will measure stress biomarkers like heart rate variability and stress hormones. They will also track perceived stress, fatigue, sleep, and workload. The goal is to see if one type of shift is more stressful, which could inform better scheduling for doctors.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Comparison of two shift schedules: a 24-hour shift versus a 14-hour night shift
What this could lead to
If certain shifts cause more stress, hospitals could redesign schedules to reduce burnout and improve doctor well-being and patient safety.
What could go wrong
This is a small study in a specific group, so results may not apply broadly. Stress biomarkers can be influenced by many factors, making it hard to draw firm conclusions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

19 people

The number who actually took part.

Start date

Apr 2010

Finished

Sep 2011

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

60 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * emergency physician Exclusion Criteria: * endocrine disease, pregnancy, recent extraprofessional deleterious life event (such as death of a near relative, divorce), any current illness, drugs used to modulate inflammatory diseases (corticosteroids, anti-inflammatory drugs, immunomodulatory drugs), or any drugs with a chronotropic effect taken over the previous six months (beta blockers, diltiazem, verapamil, anxiolytics or antidepressants).

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Conditions

The condition(s) this trial relates to.

Emergencies

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Biomarkers of stress in emergency physicians

Contacts and locations

Locations

  • CHU Clermont-Ferrand

    Clermont-Ferrand, 63003, France