ClinicalTrials.gg
CompletedNCT05457322RELAXUpdated Sep 11, 2023

The RELAX Trial: Nonpharmaceutical Intervention for Nocturnal Muscle Cramps

An interventional study of Behavioral intervention one and Behavioral intervention two in Cramps and Muscle Cramp, sponsored by University of Michigan. Completed at 6 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-09-11.

Sponsored by University of Michigan · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
99
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of the study is to learn about reducing the symptoms and severity of nighttime lower body muscle cramps in patients with and without cirrhosis.

Eligible participants will have an initial 7-day practice phase, followed by 28 days of one of two behavioral interventions.

Read the detailed description

The interventions in this trial can be done at home. Openly discussing the intervention groups with all participants prior to randomization thus poses a high risk of tainting the study because subjects in the one group may start doing the other groups exercises after having heard about it during the consent process as a way to potentially reduce the symptoms and severity of painful muscle cramps. Therefore, this study will conceal information regarding the nature of the interventions. Only participants randomized to the true intervention group will be told during the study period what the behavioral intervention is. Additionally, the title of this trial upon registration is listed slightly differently than it is listed with the Institutional Review Board (IRB), to provide scientific integrity with the masking requirements. When the trial is completed, the title will be amended to match the IRB approved title. At the conclusion of the study, at the time of the final follow-up assessments, all participants will be debriefed on the use of the concealment of the study object in this study.

02

Conditions studied

  • Cramps
  • Muscle Cramp

Keywords

  • Nighttime muscle cramps
  • Cirrhosis
  • Liver disease
  • Qualify of life
  • Sleep
  • Non-Pharmaceutical intervention
03

In context

Muscle Cramp

65 studies on the registry are indexed under Muscle Cramp; 9 are open to participants now.

This study's enrollment of 99 is above the median of 50 across 59 interventional studies indexed under Muscle Cramp.

Browse Muscle Cramp studies →

Lead sponsor

University of Michigan is the lead sponsor of 1,506 studies on the registry; 192 are open to participants now.

Of its 169 completed or terminated interventional studies of FDA-regulated products, 133 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Participants have painful muscle spasms, cramps, or charley horses at night in feet or legs.
  • Participants have muscle cramps that happen at least four times in the past month. And the muscle cramps bother them.
  • For Cirrhosis patients only: diagnosis of cirrhosis based upon:

    1. liver , or
    2. history of cirrhosis complication: ascites, variceal bleeding, hepatic encephalopathy, or
    3. 2 of the following 4 criteria:
  • Ultrasound (US), computerized tomography (CT) or Magnetic resonance imaging (MRI) imaging findings of cirrhosis (cirrhotic appearing liver, splenomegaly, varices, ascites)
  • FibroScan liver stiffness score >13 kilopascal (kPa)
  • Laboratory testing: (AST)/ ratio index (APRI) >2.0
  • CT, MRI or esophagogastroduodenoscopy (EGD) showing presence of esophageal varices

Exclusion criteria

Exclusion Criteria:

  • Non-English speaking
  • Unable or unwilling to provide consent
  • Pregnancy via self-report
  • Disorientation at the time of enrollment
  • History of multiple sclerosis
  • History of cerebral palsy
  • History of stroke with paralysis
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
99 participants (actual)

Study arms

  • Experimental
    Behavioral intervention one

    Behavioral: Behavioral intervention one

  • Experimental
    Behavioral intervention two

    Behavioral: Behavioral intervention two

Interventions

  • BehavioralBehavioral intervention one

    Participants will view or listen to audiovisual material and engage in a daily 10-minute exercise. Following the practice period participants will continue to do the true 28-day intervention period in which they were randomized to.

  • BehavioralBehavioral intervention two

    Participants will view or listen to audiovisual material and engage in a daily 10-minute exercise. Following the practice period participants will continue to do the true 28-day intervention period in which they were randomized to.

06

What researchers measure

Primary outcomes

  1. Change in cramp severity after 35-days as measured by the Visual Analog Scale for Cramps

    This is a one question scale from 0 to 10; 0 indicates no cramps and 10 indicates worst cramps imaginable.

    Time frame: baseline, 35 days

Secondary outcomes

  1. Patient global impression of change (PGIC)

    This is a one question survey in which the participants rate overall status as one of the following: Very Much Improved, Much Improved, Minimally Improved, No Change, Minimally Worse, Much Worse, Very Much Worse. Comparison of PGIC scores at 35 days between both arms.

    Time frame: 35 days

  2. Change in sleep quality assessed by the Pittsburgh Sleep Quality Index (PSQI).

    This is a one question survey in which the participants rate overall sleep quality as one of the following: Very good, Good, Fair, Bad, Very bad.

    Time frame: baseline, 35 days

07

Study locations

6 sites
  • Cedars-Sinai
    Los Angeles, California 90048, United States
  • University of Miami Health System
    Miami, Florida 33125, United States
  • Beth Israel Deaconess Medical Center
    Boston, Massachusetts 02215, United States
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
  • Mayo Clinic
    Rochester, Minnesota 55905, United States
  • Baylor
    Dallas, Texas 75246, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Aug 2022 to primary completion in Aug 2023, 11 months.

Of 20 interventional studies with no phase under Muscle Cramp, half reached primary completion within 8 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 11. This study's 11 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 9, 2022
First posted
Jul 14, 2022
StartActual
Aug 30, 2022
Primary completionActual
Aug 14, 2023
CompletionActual
Aug 14, 2023
Last update
Sep 11, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 11, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05457322
Responsible party
Elliot B. Tapper (Associate Professor of Internal Medicine, University of Michigan) — Principal investigator
First posted
Jul 14, 2022
Start date
Aug 30, 2022
Primary completion
Aug 14, 2023
Completion
Aug 14, 2023
Last update
Sep 11, 2023

Study contacts

Elliot Tapper, MD
principal investigator · University of Michigan

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.

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