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Mind over muscle: mental training boosts ACL recovery

NCT ID NCT03209531

Symptom relief Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

What the study statuses mean

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at whether a type of mental coaching, called operant conditioning, could help improve thigh muscle strength and activation in people who had ACL surgery. Eleven adults aged 18-45 who had ACL reconstruction took part. The goal was to see if this brain-training approach could reduce the muscle weakness that often lingers after injury.

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

11 people

The number who actually took part.

Started

Sep 2017

Finished

Nov 2025

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 45 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: * aged 18-45 years * suffered an acute, complete ACL rupture * have undergone ACL reconstructive surgery * willingness to participate in testing and follow-up as outlined in the protocol Exclusion Criteria: * have suffered a previous ACL injury; * have undergone previous major surgery to either knee; * have a history of recent significant knee injury (other than ACL) or lower-extremity fracture; * have a history of uncontrolled diabetes or hypertension; * be pregnant or plan to become pregnant; * have metal implants in the head; * have electronic devices in their ear or heart (e.g., cochlear implants or cardiac pacemakers); * have unexplained recurrent headaches; * have a recent history of seizures; * be taking drugs that reduce seizure threshold; * have a history of repeated fainting spells;

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Conditions

The condition(s) this trial relates to.

Anterior Cruciate Ligament Injuries

As listed by the trial registrant

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

Anterior cruciate ligament injury

Contacts and locations

Locations

  • University of Michigan

    Ann Arbor, Michigan, 48108, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.