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Can a simple stretch ease chronic back pain?

NCT ID NCT04551326

Symptom relief Sponsor: University Hospital, Clermont-Ferrand 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time

Summary

This trial tests whether a single session of hamstring stretching can immediately improve flexibility and reduce disability in people with chronic low back pain. Adults aged 18 to 60 with tight hamstrings and back pain lasting over three months will receive a one-minute stretch on each leg performed by a physical therapist. Researchers will measure changes in knee extension and straight-leg raise angles, and explore how psychological and social factors might influence the response.

What this could mean

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

Active substance
manual hamstring stretching
What this could lead to
If effective, this simple stretching technique could offer a quick, drug-free way to improve flexibility and reduce disability in people with chronic low back pain.
What could go wrong
This is a small, early-stage trial measuring immediate effects only, so any benefits may be short-lived or not translate to long-term relief. Results may also vary widely between individuals.

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

90 people

The number who actually took part.

Started

Jul 2020

Finished

May 2022

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 60 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: * Age between 18 and 60 years * Chronic low back pain (\>3 months) with or without pain irradiation to lower limb * Hamstring flexibility deficit (AKE \<80° and FTF\>5cm) Exclusion Criteria: * Pregnancy or breastfeeding, * Condition of restricted mental/legal autonomy (ex. guardianship) , * No social security insurance,

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As listed by the trial registrant

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

Chronic low-back pain

Contacts and locations

Locations

  • CHu de Nîmes

    Nîmes, France

  • University Hospital, Clermont Ferrand

    Clermont-Ferrand, 63000, France

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