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Sleep-deprived drivers put to the test in simulator study

NCT ID NCT00560456

Knowledge-focused Sponsor: University Hospital, Bordeaux 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how getting only 4 hours of sleep for 5 nights in a row affects driving performance, sleepiness, and thinking skills. It included 40 healthy men and snorers. Participants drove in a simulator and took tests after restricted sleep and after a full night of recovery sleep.

What this could mean

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

What this could lead to
If successful, this research could help explain why some people are more vulnerable to sleep-related driving accidents and inform better recovery strategies.
What could go wrong
This is a small, observational study with only 40 participants. Results may not apply to the general population, and the driving simulator may not reflect real-world conditions.

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

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Nov 2007

Finished

Oct 2009

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

20 to 55 years

Sex

Male participants only

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: Healthy subjects inclusion criteria : * Healthy males without snoring nor subjective daytime sleepiness (Epworth \<9) * Intermediate chronotype * Hypopnea/apnea index \<5 * Periodic movement index \<5 * Sleep efficiency \> 85 % * Not taking medication modifying alertness * Mean driving distance per year 15000 km * Regular sleep-wake schedule. Snorers inclusion criteria : * Snoring males without subjective daytime sleepiness (Epworth \<9) * Intermediate chronotype * Hypopnea/apnea index \<5 * Periodic movement index \< 5 * Sleep efficiency \> 85 % * Not taking medication modifying alertness * Mean driving distance per year 15000 km * Regular sleep-wake schedule Exclusion Criteria: Healthy subjects exclusion criteria : * Short or long sleeper * Shift- or night-worker * Sleep, mood, neurological, cardiovascular, pulmonary, endocrinological,… disorders * Alcohol * Consumption of illicit drugs. Snorers exclusion criteria : * Short or long sleeper * Shift- or night-worker * Mood, neurological, cardiovascular, pulmonary, endocrinological,… disorders, * Sleep disorder except snoring * Alcohol * Consumption of illicit drugs.

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Conditions

The condition(s) this trial relates to.

Sleep Deprivation Snoring

As listed by the trial registrant

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

Sleep deprivation

Contacts and locations

Locations

  • Laboratoire d'Imagerie et de Neurosciences Cognitives (LINC)

    Strasbourg, 67000, France

  • University Hospital Bordeaux, Groupe Hospitalier Pellegrin

    Bordeaux, 33076, France

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