Spinal Mobilization and Manipulation for Nonspecific Low Back Pain (SMM-LBP)

August 2, 2026 updated by: alyildirim, Biruni University

Effects of Spinal Mobilization and Manipulation Added to Conventional Physiotherapy on Pain Intensity, Functional Disability, Fear-Avoidance Beliefs, and Lumbar Range of Motion in Individuals With Non-Specific Low Back Pain: A Randomized Controlled Trial

Low back pain is one of the most common musculoskeletal disorders worldwide and is a major cause of pain and disability. Manual therapy techniques such as spinal mobilization and spinal manipulation are frequently used together with conventional physiotherapy; however, their additional benefits remain unclear.

This randomized controlled trial aims to investigate whether adding spinal mobilization and spinal manipulation to conventional physiotherapy improves pain intensity, functional disability, fear-avoidance beliefs, and lumbar range of motion in individuals with non-specific low back pain. Participants will be randomly assigned to receive either conventional physiotherapy alone or conventional physiotherapy combined with spinal mobilization and manipulation. Outcome measures will be assessed before and after the six-week intervention. The findings of this study may provide evidence regarding the effectiveness of combining manual therapy with conventional physiotherapy for the management of non-specific low back pain.

Study Overview

Detailed Description

Background

Non-specific low back pain is one of the leading causes of disability worldwide and is associated with substantial physical, psychological, and socioeconomic burden. Conservative physiotherapy is recommended as the first-line treatment, and manual therapy techniques such as spinal mobilization and spinal manipulation are frequently used as adjunctive interventions. However, evidence regarding their additional effectiveness when combined with conventional physiotherapy remains limited.

Objective

The aim of this randomized controlled trial is to investigate the effects of spinal mobilization and manipulation in addition to conventional physiotherapy on pain intensity, functional disability, fear-avoidance beliefs, and lumbar range of motion in individuals with non-specific low back pain.

Methods

Thirty participants with non-specific low back pain will be randomly allocated to either a conventional physiotherapy group or a conventional physiotherapy plus spinal mobilization and manipulation group. Both groups will receive conventional physiotherapy three times per week for six consecutive weeks. The intervention group will additionally receive spinal mobilization and spinal manipulation performed by an experienced physiotherapist.

Pain intensity will be assessed using the Visual Analog Scale (VAS), functional disability using the Roland-Morris Disability Questionnaire (RMDQ), fear-avoidance beliefs using the Fear-Avoidance Beliefs Questionnaire (FABQ), and lumbar range of motion using a universal goniometer. Outcome assessments will be performed at baseline and after completion of the six-week intervention.

Expected Outcomes

It is hypothesized that adding spinal mobilization and spinal manipulation to conventional physiotherapy will result in greater improvements in pain intensity, functional disability, fear-avoidance beliefs, and lumbar range of motion compared with conventional physiotherapy alone.

Study Type

Interventional

Enrollment (Estimated)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adults aged 18 to 60 years.
  • Diagnosis of non-specific low back pain.
  • Symptoms persisting for more than 12 weeks.
  • Able to understand the study procedures and provide written informed consent.
  • Willing to participate in the study and comply with the intervention protocol

Exclusion Criteria:

  • Structural spinal abnormalities.
  • Spinal infection or tumor.
  • Inflammatory spinal diseases.
  • Neurological disorders or neurological deficits.
  • Psychiatric disorders.
  • Pregnancy.
  • History of recent spinal surgery.
  • Chronic or systemic diseases that could affect participation.
  • Conditions that could interfere with adherence to the treatment protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Conventional Physiotherapy Group
Participants received conventional physiotherapy consisting of superficial heat application using a hot pack (20 minutes), transcutaneous electrical nerve stimulation (TENS) (20 minutes), therapeutic ultrasound (5 minutes), and supervised therapeutic exercises (20 minutes), administered three times per week for six consecutive weeks.
Participants received conventional physiotherapy consisting of superficial heat application using a hot pack (20 minutes), transcutaneous electrical nerve stimulation (TENS) (20 minutes), therapeutic ultrasound (5 minutes), and supervised therapeutic exercises (20 minutes). The intervention was administered three times per week for six consecutive weeks, resulting in a total of 18 treatment sessions.
Experimental: Conventional Physiotherapy + Spinal Mobilization and Manipulation Group
Participants received the same conventional physiotherapy program as the active comparator group. In addition, spinal mobilization according to the Maitland concept and high-velocity, low-amplitude (HVLA) spinal manipulation were applied by an experienced physiotherapist three times per week for six consecutive weeks.
Participants received conventional physiotherapy consisting of superficial heat application using a hot pack (20 minutes), transcutaneous electrical nerve stimulation (TENS) (20 minutes), therapeutic ultrasound (5 minutes), and supervised therapeutic exercises (20 minutes). The intervention was administered three times per week for six consecutive weeks, resulting in a total of 18 treatment sessions.
Spinal mobilization and spinal manipulation were administered sequentially during the same treatment session. Grade III central posterior-anterior oscillatory mobilization according to the Maitland concept was applied to the identified hypomobile lumbar segment, followed immediately by a high-velocity, low-amplitude (HVLA) rotational thrust manipulation performed in the side-lying position. The intervention was individualized according to each participant's clinical presentation, symptom response, and joint mobility assessment. All procedures were performed by the same physiotherapist with more than 10 years of clinical experience in orthopedic manual therapy, three times per week for six consecutive weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain intensity measured using the Visual Analog Scale (VAS)
Time Frame: Baseline and after 6 weeks of intervention
Pain intensity will be assessed under three conditions (at rest, during activity, and at night) using a 10-cm Visual Analog Scale (VAS). Scores range from 0 (no pain) to 10 (worst imaginable pain), with higher scores indicating greater pain intensity.
Baseline and after 6 weeks of intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Functional disability measured using the Roland-Morris Disability Questionnaire (RMDQ)
Time Frame: Baseline and after 6 weeks of intervention
Functional disability will be assessed using the 24-item Roland-Morris Disability Questionnaire (RMDQ). Scores range from 0 to 24, with higher scores indicating greater disability.
Baseline and after 6 weeks of intervention
Fear-avoidance beliefs measured using the Fear-Avoidance Beliefs Questionnaire (FABQ)
Time Frame: Baseline and after 6 weeks of intervention
Fear-avoidance beliefs will be evaluated using the Fear-Avoidance Beliefs Questionnaire (FABQ), including physical activity and work subscales. Higher scores indicate greater fear-avoidance beliefs.
Baseline and after 6 weeks of intervention
Lumbar range of motion
Time Frame: Baseline and after 6 weeks of intervention
Lumbar flexion, extension, lateral flexion, and rotation will be measured using a universal goniometer. Three measurements will be obtained for each movement, and the mean value will be used for analysis.
Baseline and after 6 weeks of intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

August 30, 2026

Primary Completion (Estimated)

November 15, 2026

Study Completion (Estimated)

November 30, 2026

Study Registration Dates

First Submitted

July 23, 2026

First Submitted That Met QC Criteria

August 2, 2026

First Posted (Actual)

August 6, 2026

Study Record Updates

Last Update Posted (Actual)

August 6, 2026

Last Update Submitted That Met QC Criteria

August 2, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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