Crack Users' sleep and movement tracked in new study
NCT ID NCT06050304
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study aims to observe a specific behavior called behavioral sensitization in people addicted to crack-cocaine. Researchers will track the movement and sleep patterns of 20 participants over 3 weeks using a wearable device called an actimeter. The goal is to see how crack use affects activity and rest, and to look for related markers in the blood.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2025
- Expected to finish
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Mar 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide 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: * \> 18 years * Have a current crack-cocaine use disorder defined as Severe Intensity Use Disorder (6 or more DSM5 criteria), AND preferential use of rapid administration route (intravenous or smoked) * Self-identified male or female (n=10 males, n=10 females) * Negative pregnancy test for females and use of effective contraception * Be affiliated with a social security plan (or PUMA or CSS or AME) * Sign an informed consent and commit to a 3-week follow-up in the study * Have a weight greater than 40 kg Exclusion Criteria: * • Patient with a psychiatric disorder or symptoms that are not currently stabilized * Patient who is a minor or under protective supervision (curatorship or guardianship) * Patient in care at the request of a judicial authority (therapeutic injunction, classification with orientation) * Pregnant or breastfeeding women * Patients who do not speak French or English sufficiently * Patients weighing less than 40 kg
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Centre 001_Hôpital Fernand Widal
RECRUITINGParis, 75010, France
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Hôpital Fernand Widal
RECRUITINGParis, F75010, France
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