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Effect of Dry Needling Multifidus on Thickness of Transversus Abdominis in Healthy Individuals

This study has been completed.
Information provided by (Responsible Party):
Emilio, University of Nevada, Las Vegas Identifier:
First received: November 21, 2012
Last updated: June 17, 2013
Last verified: June 2013

Intramuscular therapy (also known as dry needling) has been shown to give dramatic relief of musculoskeletal pain. The mechanisms of action remain unknown, and this study will examine for a neurophysiological effect.

Condition Intervention
Back Pain
Procedure: Dry needling
Procedure: Sham needling

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Outcomes Assessor)
Primary Purpose: Basic Science
Official Title: The Effect of Trigger Point Dry Needling to the Multifidus Muscle on Resting and Contracted Thickness of Transversus Abdominis in Healthy Subjects

Resource links provided by NLM:

Further study details as provided by University of Nevada, Las Vegas:

Primary Outcome Measures:
  • Thickness of transversus abdominis at rest and during contraction [ Time Frame: 1 day ] [ Designated as safety issue: No ]
    Real time ultrasound measurement

Enrollment: 60
Study Start Date: August 2012
Study Completion Date: June 2013
Primary Completion Date: June 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Dry needling
Monofilament needles will be inserted into each subject's left multifidus muscle and stimulated mechanically for a local twitch response
Procedure: Dry needling
Sterile monofilament needles
Sham Comparator: Sham needling
Monofilament tubes will be pressed into the left multifidus muscle and mechanically manipulated to give the sensation that needling is occuring.
Procedure: Sham needling
Applicator tubes from the sterile monofilament needles

Detailed Description:

Consenting adults will be taught how to contract their abdominal muscles, and to contract transversus abdominis in particular. They will then have real time ultrasound measurements of the resting and contracted thickness of their left transversus abdominis muscle. After this, they will receive actual or sham needling to their left multifidus muscle by another researchers blinded to the real time ultrasound measurements. After needling or sham intervention is complete, the original researchers will return to re-measure transversus abdominis. They will be blind to intervention allocation.


Ages Eligible for Study:   18 Years to 60 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Age, absence of back pain or symptoms for greater than 6 months and ability to perform DCC. Subjects must also report they are comfortable with being 'needled'.

Exclusion Criteria:

  • Presence of back pain or symptoms within the last 6 months, history of: abdominal or spinal surgery, significant scoliosis, rheumatoid arthritis, osteoporosis, osteopenia, active ankylosing spondylitis. If a subject reports a fear of needles.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01734577

United States, Nevada
University of Nevada Las Vegas - Department of Physical Therapy
Las Vegas, Nevada, United States, 89154
Sponsors and Collaborators
University of Nevada, Las Vegas
Study Director: Daniella Morton, BSc University of Nevada Las Vegas Physical Therapy
Study Director: Sarah Buckingham, BSc University of Nevada Las Vegas Physical Therapy
Study Director: Crystal Montoya, BSc Univesity of Nevada Las Vegas Physical Therapy
  More Information

No publications provided

Responsible Party: Emilio, Dr. Emilio J. Puentedura, University of Nevada, Las Vegas Identifier: NCT01734577     History of Changes
Other Study ID Numbers: UNLVPT-4059
Study First Received: November 21, 2012
Last Updated: June 17, 2013
Health Authority: United States: Institutional Review Board

Keywords provided by University of Nevada, Las Vegas:
Back pain

Additional relevant MeSH terms:
Back Pain
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms processed this record on November 23, 2014