Myofascial trigger points in the upper trapezius muscle are a common cause of neck pain and may negatively affect pressure pain threshold, upper limb function, sleep quality, and quality of life. This randomized, sham-controlled clinical trial aimed to compare the effects of the Jones Technique, combined therapy (therapeutic ultrasound plus transcutaneous electrical nerve stimulation \[TENS\]), their combination, and a sham intervention in women with active upper trapezius myofascial trigger points. The primary outcome was pressure pain threshold. Secondary outcomes included pain intensity, upper limb disability, sleep quality, quality of life, physical activity level, and participant satisfaction.
Myofascial trigger points (MTrPs) in the upper trapezius muscle are frequently associated with neck pain, reduced pressure pain threshold, and impaired upper limb function. Several conservative interventions have been proposed for the treatment of MTrPs; however, evidence comparing manual therapy and combined electrotherapy remains limited. This single-center, randomized, sham-controlled, parallel-group clinical trial evaluated the effects of the Jones Technique and combined therapy (therapeutic ultrasound plus transcutaneous electrical nerve stimulation \[TENS\]) in women aged 18 to 40 years presenting with active myofascial trigger points in the upper trapezius muscle. Participants were randomly allocated (1:1:1:1) into four groups: (1) Jones Technique; (2) combined therapy; (3) combined therapy plus Jones Technique; and (4) sham control. Randomization was performed using block randomization stratified by age. Participants underwent a single treatment session. Baseline assessments included demographic data, pain intensity measured using the Visual Analog Scale (VAS), pressure pain threshold measured with a pressure algometer, upper limb disability (DASH), sleep quality (Pittsburgh Sleep Quality Index), quality of life (SF-36), and physical activity level (IPAQ). Immediately after the intervention, pain intensity, pressure pain threshold, and participant satisfaction were reassessed. The primary outcome was pressure pain threshold. Secondary outcomes included pain intensity, upper limb disability, sleep quality, quality of life, physical activity level, and participant satisfaction.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
40
Manual therapy technique applied to active myofascial trigger points of the upper trapezius muscle. Participants were positioned in prone lying, and sustained pressure with positional release was applied to each trigger point for 90 seconds. Five trigger points were treated during a single treatment session.
Combined therapy consisting of pulsed therapeutic ultrasound (1 MHz, 20% duty cycle, 1.0 W/cm²) delivered simultaneously with transcutaneous electrical nerve stimulation (TENS; biphasic asymmetric waveform, 200 μs pulse duration, 100 Hz). Treatment was applied to five active upper trapezius myofascial trigger points during a single 10-minute session.
Participants received the Jones Technique followed immediately by combined therapy (therapeutic ultrasound plus transcutaneous electrical nerve stimulation \[TENS\]) during a single treatment session.
Participants underwent sham treatment consisting of inactive combined therapy with the device turned off and a simulated Jones Technique performed without therapeutic pressure.
Physical Therapy Teaching Clinic, Universidade do Vale do Rio dos Sinos (UNISINOS)
São Leopoldo, Rio Grande do Sul, Brazil
Pressure Pain Threshold (PPT)
Pressure pain threshold assessed using a pressure algometer at five active myofascial trigger points in the upper trapezius muscle. The pressure pain threshold is recorded in kg/cm². Higher values indicate greater pressure tolerance and therefore a better outcome.
Time frame: Baseline and immediately after the intervention (single treatment session)
Pain Intensity
Pain intensity assessed using the Visual Analog Scale for Pain (VAS). Scores range from 0 to 10 cm, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher scores indicate worse pain.
Time frame: Baseline and immediately after the intervention
Upper Limb Disability
Upper limb disability assessed using the Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire. Scores range from 0 to 100, where 0 indicates no disability and 100 indicates the most severe disability. Higher scores indicate worse upper limb function.
Time frame: Baseline
Sleep Quality
Sleep quality assessed using the Pittsburgh Sleep Quality Index (PSQI). Total scores range from 0 to 21, where higher scores indicate poorer sleep quality.
Time frame: Baseline
Quality of life
Quality of life assessed using the 36-Item Short Form Health Survey (SF-36). Scores for each domain range from 0 to 100, where higher scores indicate better health-related quality of life.
Time frame: Baseline
Physical Activity Level
Physical activity level assessed using the International Physical Activity Questionnaire (IPAQ). Participants are classified into low, moderate, or high physical activity levels based on the questionnaire scoring protocol. Higher physical activity classification indicates a better outcome.
Time frame: Baseline
Participant Satisfaction
Participant satisfaction assessed immediately after treatment using a 7-point Likert scale. Scores range from 1 (strongly disagree/very dissatisfied) to 7 (strongly agree/very satisfied). Higher scores indicate greater participant satisfaction.
Time frame: Immediately after the intervention
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