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Can a smartwatch spot mental fatigue before it slows you down?

NCT ID NCT07323810

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Aug 19, 2026 · Updated 2 times

Summary

This study aims to see if wearable sensors can detect mental fatigue in real time and predict how it affects running performance. Researchers will recruit 30 healthy, trained runners aged 18-35. Participants will complete a mentally tiring task or watch a documentary, then run a 5-kilometer time trial while wearing sensors that measure heart rate, breathing, and eye movements. The goal is to develop an objective way to monitor mental fatigue without relying on self-reports or lab equipment.

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 30 people

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

Started

Dec 2025

Expected to finish

Sep 2026

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

18 to 35 years

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: * Healthy (no neurological, cardiovascular or musculoskeletal disorders of any kind) * Male or female * No prior knowledge of the concept of MF * No medication * Non-smoker * 18-35 years of age * Experienced runners: (≥15km/week and/or ≥2u/week during the last 6 months) Exclusion Criteria: * Injuries in the past 6 months, affecting running performance * Suffering from a chronic health condition (could be neurological, cardiovascular, internal or musculoskeletal) * Participating in any concomitant care or research trials * History of suffering from any mental/psychiatric disorders * Use of medication * Use of caffeine and heavy efforts 24 hours prior each trial * Suffering from colour vision deficiencies * Not eating a standardized meal, the morning of each trial and the evening before each trial

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Conditions

The condition(s) this trial relates to.

Fatigue Mental Fatigue

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.

  1. The places running it

    1 site. The list below names each one and where it is.

  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

    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

  • Brussels Labo voor Inspanning en Topsport

    RECRUITING

    Brussels, 1050, Belgium

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