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
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 48
- 试验地点
- 1
- 主要终点
- Functional Disability (Neck Disability Index)
研究概览
简要总结
The goal of this clinical trial is to determine whether dual frequency low-level laser therapy can reduce pain, improve function, and increase neck movement in patients with myofascial trigger points in the upper trapezius muscle. The study includes men and women aged 20 to 55 years who have been diagnosed with upper trapezius myofascial pain syndrome.
The main questions it aims to answer are:
- Does dual frequency low-level laser therapy reduce pain more effectively than single wavelength laser therapy?
- Does dual frequency low-level laser therapy improve functional ability and cervical range of motion more than other treatments?
Researchers compared three groups of participants receiving different treatments to evaluate their effects.
Participants were randomly assigned to one of three groups:
- Group A received red wavelength low-level laser therapy with conventional physiotherapy
- Group B received infrared low-level laser therapy with conventional physiotherapy
- Group C received dual frequency low-level laser therapy with conventional physiotherapy
All participants received treatment twice weekly for four weeks. Conventional therapy included stretching exercises, strengthening exercises, and postural correction.
详细描述
This randomized controlled trial was conducted to evaluate the effectiveness of dual frequency low-level laser therapy in patients with myofascial trigger points of the upper trapezius muscle. Participants aged 20 to 55 years were randomly allocated into three parallel groups.
Group A received red wavelength low-level laser therapy, Group B received infrared low-level laser therapy, and Group C received dual frequency low-level laser therapy. All groups also received conventional physiotherapy, including stretching, strengthening, and postural correction exercises.
Interventions were administered twice weekly for four weeks. Outcome assessments were performed at baseline, at week 2, and at week 4 by a blinded outcome assessor.
The primary objective of the study was to compare the effectiveness of dual frequency laser therapy with single wavelength laser therapy in reducing pain intensity, improving functional disability, and enhancing cervical range of motion.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
The outcome assessor was blinded to group allocation to reduce assessment bias.
入排标准
- 年龄范围
- 20 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •This includes the following;
- •Men and women aged 20-55 years.
- •Diagnosis of myofascial pain based on Simons criteria.
- •At least two trigger points in the upper trapezius muscle.
- •Pain duration ≥ 3 months.
- •VAS pain score ≥
- •Limited cervical range of motion (40-60%) due to trigger points.
排除标准
- •The exclusion Criteria is given below;
- •Use of anticoagulants.
- •Bleeding disorders or dermatological diseases at treatment site.
- •History of infectious, inflammatory, tumoral, cardiopulmonary, psychiatric, or systemic diseases.
- •Kellgren stage 3-4 cervical osteoarthritis or cervical disc herniation causing radiculopathy.
- •Diagnosis of fibromyalgia.
- •Inability to follow instructions or complete questionnaires.
研究组 & 干预措施
Red Low-Level Laser Therapy
Participants received red wavelength low-level laser therapy (660 nm) combined with conventional physiotherapy including stretching, strengthening, and postural correction exercises.
干预措施: Red Low-Level Laser Therapy (Device)
Infrared Low-Level Laser Therapy
Participants received infrared low-level laser therapy (830 nm) combined with conventional physiotherapy.
干预措施: Infrared Low-Level Laser Therapy (Device)
Red Low-Level Laser Therapy
Participants received red wavelength low-level laser therapy (660 nm) combined with conventional physiotherapy including stretching, strengthening, and postural correction exercises.
干预措施: Conventional Therapy (Other)
Dual Frequency Low-Level Laser Therapy
Participants received dual frequency low-level laser therapy (660 nm and 830 nm) combined with conventional physiotherapy.
干预措施: Conventional Therapy (Other)
Infrared Low-Level Laser Therapy
Participants received infrared low-level laser therapy (830 nm) combined with conventional physiotherapy.
干预措施: Conventional Therapy (Other)
Dual Frequency Low-Level Laser Therapy
Participants received dual frequency low-level laser therapy (660 nm and 830 nm) combined with conventional physiotherapy.
干预措施: Dual Frequency Low-Level Laser Therapy (Device)
结局指标
主要结局
Functional Disability (Neck Disability Index)
时间窗: Baseline, Week 2, Week 4
Functional disability was assessed using the Neck Disability Index (NDI), a 10-item questionnaire with scores ranging from 0 to 50. Higher scores indicate greater disability.
Cervical Range of Motion
时间窗: Baseline, Week 2, Week 4
Cervical range of motion (flexion, extension, lateral flexion, and rotation) was measured using a goniometer in degrees. Higher values indicate greater mobility.
Pain Intensity (Visual Analog Scale)
时间窗: Baseline, Week 2, Week 4
Pain intensity was measured using the Visual Analogue Scale (VAS), a 0 to 10 scale where 0 indicates no pain and 10 indicates worst imaginable pain. Higher scores represent greater pain intensity
次要结局
- Functional Status (Neck Disability Index)(Baseline, Week 2, Week 4)
- Cervical Range of Motion (CROM)(Baseline, Week 2, Week 4)