Completed

Locus of Pain Control: Neural Substrates and Modifiability

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What is being tested

Exercise regimen

+ Relaxation training
+ Standard Care
Behavioral
Who is being recruted

Fibromyalgia
+4

+ Muscular Diseases
+ Musculoskeletal Diseases
From 18 to 60 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 1 & 2
Interventional
Study Start: May 2004
See protocol details

Summary

Principal SponsorUniversity of Michigan
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner
Study start date: May 1, 2004Actual date on which the first participant was enrolled.

FM is a chronic pain condition that has no cure, and drugs are only partially successful in managing its symptoms. Many people with FM utilize nondrug management methods, such as exercise, for symptom relief. Nondrug methods can be quite effective, but some patients find it difficult to use these methods consistently. This study will determine which nondrug methods relieve FM symptoms by examining patients' brains after exercise or relaxation techniques. Preliminary data indicate that beliefs about one's personal ability to control pain result in use of differential neural mechanisms to process pain. This study will use fMRI, a tool for visualizing pain-processing patterns, to gain insights into how exercise and relaxation techniques modify pain processing in patients with FM. There are four arms in this study. All participants with FM will be randomly assigned to one of three study arms. Participants in Arm 1 will receive relaxation training to supplement standard care for FM. Arm 2 participants will be prescribed an exercise regimen to supplement standard care. Participants in Arm 3 will receive standard care only. Arm 4 is a healthy control group, which will be followed during the 8-week intervention period. At baseline, all participants will undergo blood collection and physical examination and will complete questionnaires about demographics, treatment history, symptoms, functional status, affective status, and beliefs about pain. They will also undergo a baseline fMRI imaging study, combined with evoked pressure pain testing, to evaluate differences in neural mechanisms involved in pain processing. Patients in Arms 1 and 2 will then attend one face-to-face training session with a therapist, followed by phone contact over the next 8 weeks. Participants will be asked to record pain and adherence to treatment on an electronic diary. After 8 weeks, all study participants will undergo a second fMRI scan, blood collection, and physical examination, and will complete questionnaires similar to those completed at baseline.

Official TitleLocus of Pain Control: Neural Substrates and Modifiability 
NCT00086060
Principal SponsorUniversity of Michigan
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
97 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.

Other Ways to Assign Participants
Non-randomized allocation
: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.

None (Single-arm trial)
: If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How treatments are given to participants
Participants are divided into different groups, each receiving a specific treatment at the same time. This helps researchers compare how well different treatments work against each other.

Other Ways to Assign Treatments
Single-group assignment
: Everyone gets the same treatment.

Cross-over assignment
: Participants switch between treatments during the study.

Factorial assignment
: Participants receive different combinations of treatments.

Sequential assignment
: Participants receive treatments one after another in a specific order, possibly based on individual responses.

Other assignment
: Treatment assignment does not follow a standard or predefined design.

How the effectiveness of the treatment is controlled
In a non placebo-controlled study, no participants receive an inert substance (placebo) to compare outcomes. Instead, all participants receive either the experimental treatment or an alternative treatment (often the Standard of Care). This method allows researchers to compare the effects of the experimental treatment with those of a different active intervention, rather than a placebo.

Other Options
Placebo-Controlled
: A placebo is used to compare the effects of the experimental treatment with those of an inert substance, isolating the true treatment effect.

How the interventions assigned to participants is kept confidential
Everyone involved in the study knows which treatment is being given. This is typically used when it's not possible or necessary to hide the treatment details from participants or researchers.

Other Ways to Mask Information
Single-blind
: Participants do not know which treatment they are receiving, but researchers do.

Double-blind
: Neither participants nor researchers know which treatment is given.

Triple-blind
: Participants, researchers, and outcome assessors do not know which treatment is given.

Quadruple-blind
: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 18 to 60 YearsRange of ages for which participants are eligible to join.
Healthy volunteers allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Fibromyalgia
Muscular Diseases
Musculoskeletal Diseases
Myofascial Pain Syndromes
Nervous System Diseases
Neuromuscular Diseases
Rheumatic Diseases
Criteria

Note: Given that this study requires participation in a number of appointments and reimbursement will not be made for travel expenses, individuals residing more than 100 miles from Ann Arbor are not encouraged to participate in this project. Inclusion Criteria for Arms 1, 2, and 3: * Diagnosis of fibromyalgia based on the criteria outlined by the American College of Rheumatology * Standard medical care for fibromyalgia with the referring physician for at least the past 3 months Exclusion Criteria for All Participants: * Severe physical impairment that would prevent the participant from receiving either of the nondrug interventions (e.g., complete blindness, deafness, paraplegia) or coexisting physical impairments that could be harmed by light exercise (e.g., sprained ankle, neck injury) * Morbid obesity * Autoimmune disease * Cardiopulmonary disorders (e.g., angina, congestive heart failure, COPD, chronic asthma) * Uncontrolled endocrine or allergic disorders (e.g., thyroid dysfunction, Type I diabetes) * Cancer within the past 2 years * Current psychiatric disorder involving a history of psychosis (e.g., schizophrenia, schizoaffective disorder, schizophreniform disorder, delusional disorder), current suicide risk or suicide attempt within 2 years of study entry, or substance abuse within 2 years of study entry. Participants with mood disorders will not be excluded. * Any pending or active disability associated with fibromyalgia (e.g., SSI, Workers' Compensation)


Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives
3 intervention groups 

are designated in this study

This study does not include a placebo group 

Treatment Groups
Group I
Experimental
Participants will receive an exercise regimen and standard care for FM

Aerobic Exercise is a self-management technique that increases personal control over pain by enhancing physical fitness. Patients will be encouraged to choose activities best suited to their tastes and current lifestyle, incorporating lifestyle physical activities (climbing stairs, household chores, etc) and more traditional exercise activities (walking, cycling, etc.). Subjects will use ratings of perceived exertion (RPE) to guide their effort. The intervention will consist of two-hours of face-to-face contact followed by weekly telephone contact for 8 weeks. Face-to-face contract will include receiving a standardized instruction manual for exercise, a demonstration on how to perform relaxation, and tailoring homework assignments to be monitored on the weekly phone call.
Group II
Experimental
Participants will receive relaxation training and standard care for FM

Relaxation is a self-management technique that increases personal control over pain by relaxing tense muscles, allowing the body to rest, and improving mental clarity through concentration and attention and has a great deal of empirical research supporting its effectiveness as a means of pain management. A variety of relaxation skills will be taught with some being based on muscle relaxation, and others focused more on cognitive relaxation and imagery. The intervention will consist of two-hours of face-to-face contact followed by weekly telephone contact for 8 weeks. Face-to-face contract will include receiving a standardized instruction manual for relaxation, a demonstration on how to perform relaxation, and tailoring homework assignments to be monitored on the weekly phone call.
Group III
Active Comparator
Participants will receive standard of care for FM

Participants in the standard care control group will not receive any additional intervention beyond that which they are receiving from their routine health care professional.
Study Objectives
Primary Objectives

Secondary Objectives


Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 1 location
Suspended
Chronic Pain and Fatigue Research Center, University of MichiganAnn Arbor, United StatesSee the location

CompletedOne Study Center
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