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Can cycling plus a gentle brain zap ease fibromyalgia pain?

NCT ID NCT07323199

Symptom relief Sponsor: Universidad Nacional Andres Bello 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study tests whether combining high-intensity interval training (HIIT) with a gentle brain stimulation technique called tDCS can reduce pain, fatigue, and sleep problems in women with fibromyalgia. Forty women will be assigned to HIIT plus real tDCS, HIIT plus a sham device, or HIIT alone. The goal is to see if the combination works better than exercise alone for managing symptoms.

What this could mean

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

Active substance
high-intensity interval training (HIIT) and transcranial direct current stimulation (tDCS)
What this could lead to
If it works, this could point toward a more effective, drug-free way to reduce pain and fatigue in women with fibromyalgia.
What could go wrong
This is a small, early-stage trial with only 40 participants, so results may not apply to everyone. The sham group helps test if the brain stimulation adds real benefit beyond exercise alone.

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.

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Jun 2027

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 65 years

Sex

Female participants only

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: * Women with a diagnosis of Fibromyalgia by a physician according to the criteria of the American College of Rheumatology (ACR) 2016 * A stable medical treatment for symptoms for at least 4 weeks before participation (stable doses of medication) * Reported pain equal to or higher than 40 mm on the visual analogue scale (moderate or severe pain) for more than 3 months * Body mass index (BMI) between 18.5 and 39.9 kg m-2, * Controlled high blood pressure. Exclusion Criteria: * Isolated inflammatory joint, cancer, infectious, traumatic, localised neuropathic or degenerative joint pain. * Intense headache, cerebral surgery, seizure/epilepsy, cardiovascular, lung, metabolic (II diabetes mellitus), retinopathy or neurological diseases (i.e. stroke and traumatic brain injury antecedents), * Severe psychiatric disorders, major depression * Substance abuse. * Currently pregnant/breastfeeding, * Under physical therapy treatment or have participated in a designed sports or exercise training in systematic programs in the last 3 months. * Unable to speak or read Spanish fluently (inability to understand the pain scale and cooperate in testing)

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Conditions

The condition(s) this trial relates to.

fibromyalgia Pain

As listed by the trial registrant

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

Fibromyalgia (FM)

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

  • Excercise and Rehabilitation Sciences Institute, Universidad Nacional Andres Bello

    Santiago, Santiago Metropolitan, 7591538, Chile

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