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CompletedNCT04823013Updated Mar 30, 2021

Comparison of High Power Pain Threshold Ultrasound and Ischemic Compression Techniques for Treatment of Trigger Points

An interventional study of high power pain threshold ultrasound which the dose was kept constant and high power pain threshold ultrasound which the dose reduced to one half in Trigger Point Pain, Myofascial, sponsored by Gazi University. Completed at 1 site in Turkey. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-03-30.

Sponsored by Gazi University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 5 months after the study started (first participant enrolled Oct 2017, registered Mar 2021).
Phase
Not applicable
Study type
Interventional
Enrollment
153
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

This study aimed to compare the efficacy of ischemic compression and two different application methods of high power pain threshold ultrasound techniques on latent trigger point treatment. Asymptomatic subjects divided into three groups. First group took high power pain threshold ultrasound in which the intensity is kept constant at the pain level; second group took high power pain threshold ultrasound which the intensity is kept constant at half the pain level and third group took ischemic compression. All participants were asked to complete the questionnaires, which assessed pain, psychological factors and disability before treatment, after 1 week and 1 month follow-up. After each participants completed the questionnaire, the physical therapist evaluated the MTrPs. MTrPs assessment was performed before treatment, immediately after treatment, after 1 week and 1 month follow-up.

Read the detailed description

Myofascial trigger points have been defined as discrete and hyperirritable areas located within a taut band of skeletal muscle or fascia which when compressed produce pain, tenderness, dysfunction and autonomic phenomena. The treatment techniques aimed to return the fiber groups affected by myofascial trigger points to their normal length and endplates to their normal function. Although both ischemic compression and two different application methods of high power pain threshold ultrasound techniques are effective methods in the treatment of trigger points , there are no studies showing which technique is more effective. It is aimed to to compare the efficacy of ischemic compression and two different application methods of high power pain threshold ultrasound techniques on myofascial trigger point treatment.

02

Conditions studied

  • Trigger Point Pain, Myofascial

Keywords

  • high power pain threshold ultrasound
  • ischemic compression
  • pain
  • trigger points
  • pain pressure threshold
03

In context

Myofascial Pain Syndromes

1,136 studies on the registry are indexed under Myofascial Pain Syndromes; 137 are open to participants now.

This study's enrollment of 153 is above the median of 60 across 931 interventional studies indexed under Myofascial Pain Syndromes.

Browse Myofascial Pain Syndromes studies →

Lead sponsor

Gazi University is the lead sponsor of 531 studies on the registry; 99 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. being aged between 18-50
  2. the presence of a minimum of 3 latent trigger points in Upper Trapezius, Levator Scapulae, Supraspinatus, Infraspinatus, Deltoid Anterior, Pectoralis Major, Pectoralis Minor muscles
  3. no health problems
  4. signed the voluntary consent form

Exclusion criteria

Exclusion Criteria:

  1. have a neck, spine or shoulder injury in the last 6 months
  2. continued neck and back pain in the last 6 months
  3. having a skin disease that may affect upper extremity assessment
  4. malign and benign tumors
  5. pain relief medication
  6. having psychiatric treatment. -
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
153 participants (actual)

Study arms

  • Experimental
    high power pain threshold ultrasound which the dose was kept constant group (HPPT-US 1)

    Participants in HPPT-US 1 group received one session of HPPT-US treatment which the dose was kept constant. The technique delivers sound waves directly to the myofascial trigger points and results in immediate pain relief.

    Other: high power pain threshold ultrasound which the dose was kept constant

  • Experimental
    high power pain threshold ultrasound which the dose reduced to one half group (HPPT-US 2)

    Participants in HPPT-US 2 group received one session of HPPT-US treatment which the dose reduced to one half. The technique delivers sound waves directly to the myofascial trigger points and results in immediate pain relief.

    Other: high power pain threshold ultrasound which the dose reduced to one half

  • Experimental
    ischemic compression group

    Participants in IC group received one session of ischemic compression therapy. Ischemic compression is a therapy technique used in manual therapy, where blockage of blood in an area of the body is deliberately made, so that a resurgence of local blood flow will occur upon release.

    Other: ischemic compression

Interventions

  • Otherhigh power pain threshold ultrasound which the dose was kept constant

    Participants in HPPT-US 1 group received the HPPT-US treatment. The intensity was gradually increased from 0.5 W/cm² to the pain threshold level at which the patient verbally reported the pain. The therapist kept the intensity at that level for 5 s, and then moved the US transducer in a circle without the change of the intensity for 15 s. The procedure was repeated 3 times. The patients were asked whether serious pain or any abnormal sensation was felt during HPPT-US. The intensity was varied from 0.5 to 1.2 W/ cm².

  • Otherhigh power pain threshold ultrasound which the dose reduced to one half

    Participants in HPPT-US 2 group also received the HPPT-US treatment. The intensity was gradually increased from 0.5 W/cm² to the pain threshold level at which the patient verbally reported the pain. The therapist kept the intensity at that level for 5 s, then reduced the dose half and moved the US transducer in a circle for 15 s. The procedure was repeated 3 times. The patients were asked whether serious pain or any abnormal sensation was felt during HPPT-US. The intensity was varied from 0.5 to 1.2 W/ cm².

  • Otherischemic compression

    Participants in IC group received ischemic compression therapy. The technique was applied in the sitting position to participants. Ischemic compression was performed by compressing trigger points identified by palpation with tolerable intensity using thumb. The duration for each trigger points was 1 minute. Then the muscle containing the trigger point was applied intramuscular stretching for 30 seconds by therapist

06

What researchers measure

Primary outcomes

  1. Pain intensity

    Pain intensity is of valuable diagnostic information, and we ask patients to evaluate how strong their pain feels

    Time frame: Pain intensity was measured using visual analog scale (VAS) before the treatment (0-10 numeric pain rating scale, with 0 indicating no pain and 10 severe pain)

  2. Beck Depression Inventory

    Depression is a constant feeling of sadness and loss of interest, which stops you doing your normal activities.

    Time frame: Depression was assessed using the Beck Depression Inventory (BDI) before the treatment. BDI comprises 21 items, each of which is rated between 0 and 3 on a 4-point Likert Scale. The total score ranges from 0 to 63 points.

  3. Neck Pain and Disability Scale

    A disability is any condition of the body or mind that makes it more difficult for the person with the condition to do certain activities (activity limitation) and interact with the world around them.

    Time frame: Disability was evaluated by Neck Pain and Disability Scale (NPAD) before the treatment. The scale progresses from 0 to 5, increasing the limitation. the total NPAD score, which ranges from 0 to 100 points.

  4. Myofascial trigger points assessment

    Myofascial trigger points (MTrPs) have been defined as discrete and hyperirritable areas located within a taut band of skeletal muscle or fascia which when compressed produce pain, tenderness, dysfunction and autonomic phenomena

    Time frame: The MTrPs assesment was made with palpation by the physical therapist. The therapist used an algometer. The number of MTrPs and pain pressure threshold values were evaluated before treatment. PPT is a safe outcome measure to evaluate pain sensitivity.

  5. Myofascial trigger points assessment

    Myofascial trigger points (MTrPs) have been defined as discrete and hyperirritable areas located within a taut band of skeletal muscle or fascia which when compressed produce pain, tenderness, dysfunction and autonomic phenomena

    Time frame: The MTrPs assesment was made with palpation by the physical therapist. The therapist used an algometer. The number of MTrPs and pain pressure threshold values were evaluated immediately after the treatment.

  6. Pain intensity

    Pain intensity is of valuable diagnostic information, and we ask patients to evaluate how strong their pain feels

    Time frame: Pain intensity was measured using visual analog scale (VAS) at one week after the treatment (0-10 numeric pain rating scale, with 0 indicating no pain and 10 severe pain)

  7. Beck Depression Inventory

    Depression is a constant feeling of sadness and loss of interest, which stops you doing your normal activities.

    Time frame: Depression was assessed using the Beck Depression Inventory (BDI) at one week after the treatment. BDI comprises 21 items, each of which is rated between 0 and 3 on a 4-point Likert Scale. The total score ranges from 0 to 63 points.

  8. Neck Pain and Disability Scale

    A disability is any condition of the body or mind that makes it more difficult for the person with the condition to do certain activities (activity limitation) and interact with the world around them.

    Time frame: Disability was evaluated by Neck Pain and Disability Scale (NPAD) at one week after the treatment. The scale progresses from 0 to 5, increasing the limitation. the total NPAD score, which ranges from 0 to 100 points.

  9. Myofascial trigger points assessment

    Myofascial trigger points (MTrPs) have been defined as discrete and hyperirritable areas located within a taut band of skeletal muscle or fascia which when compressed produce pain, tenderness, dysfunction and autonomic phenomena

    Time frame: The MTrPs assesment was made with palpation by the physical therapist. The therapist used an algometer. Pain pressure threshold values were evaluated at one week after the treatment.

  10. Pain intensity

    Pain intensity is of valuable diagnostic information, and we ask patients to evaluate how strong their pain feels

    Time frame: Pain intensity was measured using visual analog scale (VAS) at one month after the treatment (0-10 numeric pain rating scale, with 0 indicating no pain and 10 severe pain)

  11. Beck Depression Inventory

    Depression is a constant feeling of sadness and loss of interest, which stops you doing your normal activities.

    Time frame: Depression was assessed using the Beck Depression Inventory (BDI) at one month after the treatment. BDI comprises 21 items, each of which is rated between 0 and 3 on a 4-point Likert Scale. The total score ranges from 0 to 63 points.

  12. Neck Pain and Disability Scale

    A disability is any condition of the body or mind that makes it more difficult for the person with the condition to do certain activities (activity limitation) and interact with the world around them.

    Time frame: Disability was evaluated by Neck Pain and Disability Scale (NPAD) at one month after the treatment. The scale progresses from 0 to 5, increasing the limitation. the total NPAD score, which ranges from 0 to 100 points.

  13. Myofascial trigger points assessment

    Myofascial trigger points (MTrPs) have been defined as discrete and hyperirritable areas located within a taut band of skeletal muscle or fascia which when compressed produce pain, tenderness, dysfunction and autonomic phenomena

    Time frame: The MTrPs assesment was made with palpation by the physical therapist. The therapist used an algometer. Pain pressure threshold values were evaluated at one month after the treatment.

07

Study locations

1 site
  • Istanbul Aydın University
    Istanbul, Halit Aydın Kampüsü No:38 Küçükçekmece, Turkey
08

References and documents

Publications

  • Alvarez DJ, Rockwell PG. Trigger points: diagnosis and management. Am Fam Physician. 2002 Feb 15;65(4):653-60. PubMed 11871683 ↗
  • Vernon H, Schneider M. Chiropractic management of myofascial trigger points and myofascial pain syndrome: a systematic review of the literature. J Manipulative Physiol Ther. 2009 Jan;32(1):14-24. doi: 10.1016/j.jmpt.2008.06.012. PubMed 19121461 ↗
  • Unalan H, Majlesi J, Aydin FY, Palamar D. Comparison of high-power pain threshold ultrasound therapy with local injection in the treatment of active myofascial trigger points of the upper trapezius muscle. Arch Phys Med Rehabil. 2011 Apr;92(4):657-62. doi: 10.1016/j.apmr.2010.11.030. PubMed 21440713 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 30, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04823013
Lead sponsor
Gazi University
Responsible party
Gamze Pala (Research Assistant, Gazi University) — Principal investigator
First posted
Mar 30, 2021
Start date
Oct 1, 2017
Primary completion
Apr 1, 2018
Completion
Apr 1, 2018
Last update
Mar 30, 2021

Study contacts

Gamze G Pala, PhD
principal investigator · Istanbul Aydın University
Ebru Kaya Mutlu, Assoc.Prof.
principal investigator · Istanbul University - Cerrahpasa
Hanifegül Taşkıran, Prof.
principal investigator · Istanbul Aydın University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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