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Dual Frequency Low-Level Laser Therapy in Myofascial Trigger Points of Upper Trapezius
Sponsor: University of Lahore
Summary
The goal of this clinical trial is to learn if dual frequency low-level laser therapy (DF-LLLT) works to reduce pain and improve neck function in adults with myofascial trigger points in the upper trapezius muscle. It will also determine whether DF-LLLT improves cervical range of motion. The main questions it aims to answer are: i)Does DF-LLLT reduce pain intensity on the Visual Analog Scale (VAS) more than sham laser therapy? ii)Does DF-LLLT improve functional status (Neck Disability Index) and cervical range of motion more than sham laser therapy? Researchers will compare DF-LLLT plus conventional therapy to sham laser plus conventional therapy to see if DF-LLLT has greater therapeutic effects. Participants will: 1. Receive either DF-LLLT or sham laser therapy twice weekly for 4 weeks 2. Perform a standardized stretching and strengthening exercise program for the neck and shoulders. 3. Attend clinic visits at baseline, week 2, and week 4 for assessments of pain, function, and cervical mobility.
Official title: A Randomized Controlled Trial to Evaluate the Effect of Dual Frequency Low-Level Laser Therapy on Pain Intensity, Pressure Pain Threshold, and Functional Outcomes in Patients With Myofascial Trigger Points in the Upper Trapezius Muscle
Key Details
Gender
All
Age Range
20 Years - 55 Years
Study Type
INTERVENTIONAL
Enrollment
32
Start Date
2025-08-25
Completion Date
2026-02
Last Updated
2025-09-03
Healthy Volunteers
No
Interventions
Dual Frequency Low-Level Laser Therapy
DF-LLLT (830 nm, 100 mW/cm², 9.12 Hz, 5 J/cm²) applied over each identified trigger point for 3 minutes 9 seconds per point, twice weekly for 4 weeks.
Sham Laser
Inactive laser device identical in appearance and sound to the active laser but without light emission, applied for 3 minutes 9 seconds per point, twice weekly for 4 weeks.
Conventional Therapy (Stretching and Strengthening Program)
A standardized physiotherapy program including stretching and strengthening exercises for the cervical and shoulder muscles. The program is performed under physiotherapist supervision twice weekly for 4 weeks. Exercises are identical across both study arms and include stretching of the upper trapezius and strengthening of the neck and scapular stabilizer muscles.