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Sleep schedule showdown: does timing matter for ADHD teens?

NCT ID NCT07684417

Knowledge-focused Sponsor: Children's Hospital Medical Center, Cincinnati Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 06, 2026 · Last updated Aug 18, 2026 · Updated 3 times

Summary

This study looks at how changing sleep schedules affects attention, mood, and the internal body clock in teens aged 13-17 with ADHD. Over three weeks, participants follow different sleep patterns—including a short-sleep week and a week with extended sleep timed either to match or clash with their natural preferences. Researchers measure symptoms of inattention and internalizing problems like anxiety and depression, aiming to understand whether the benefits of healthy sleep depend on when that sleep happens.

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 it works, this could point toward better sleep recommendations for teens with ADHD, showing that when you sleep matters as much as how long.
What could go wrong
This is a small, early-stage observational study with only 50 participants, so findings may not apply to all teens with ADHD. It tests short-term changes, not long-term effects.

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 50 people

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

Started

Jul 2026

Expected to finish

Aug 2030

An estimate. End dates often move.

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

13 to 17 years

Sex

Anyone

Healthy volunteers

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

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

Inclusion Criteria: * Ages 13-17 years at time of informed consent/assent * Based on semi-structured clinical interview, participants must meet full DSM-5 criteria for ADHD inattentive or ADHD combined presentation. Exclusion Criteria: * Non-traditional school setting (morning-afternoon Monday-Friday). * Exclusionary diagnoses. We will exclude adolescents with known intellectual disability, autism spectrum disorder, psychosis, bipolar disorder, or neurologic conditions (e.g., epilepsy), per caregiver-report. * Exclusionary sleep disorders. We will exclude adolescents with symptoms of obstructive sleep apnea or periodic limb movement disorder based on published cutoffs on a validated questionnaire. * High caffeine intake. To promote adherence to directives not to consume caffeine the day of office visits without withdrawal effects, adolescents with daily intake of \>1 coffee or "energy drink" or \>2 caffeinated sodas per day based on caregiver- and adolescent-report will be excluded. * Unwillingness or inability to take part in study procedures (e.g., visits, prescribed sleep conditions). * Medication use or unwillingness to discontinue melatonin and/or stimulant medications during the 3-week study protocol. * Refusal to refrain from automobile driving during the sleep restriction condition. * "Intermediate" Chronotypes (neither morning larks nor night owls) based on habitual sleep timing on nights when adolescent has no morning obligations such as school or work.

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder

As listed by the trial registrant

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

ADHD

How to take part

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  1. The places running it

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  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Cincinnati Children's Hospital Medical Center

    RECRUITING

    Cincinnati, Ohio, 45229, United States

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