Effects of Different Acupuncture Retention Times at Trigger Points on Pain Sensitivity in Individuals with Chronic Low Back Pain

Effects of Different Trigger Point Acupuncture Retention Times on Pressure Pain Thresholds in Patients with Chronic Low Back Pain: A Randomized Controlled Trial - A Study on the Duration of Acupuncture Stimulation of Trigger Points in Patients with Chronic Low Back Pain

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000062046

Enrollment

Registered

2026-06-24

Start date

2023-08-31

Completion date

Unknown

Last updated

2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Low Back Pain

Interventions

A disposable stainless-steel acupuncture needle will be inserted into the symptom-reproducing tissue identified using ultrasonography and removed immediately after insertion. A disposable stainless-st

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adults aged 18~65 years. Students or employees of the university. Individuals with chronic low back pain lasting for at least 3 months. No history of lumbar spine surgery. No symptoms suggestive of lower extremity radiculopathy. Reproduction of their usual low back pain upon manual compression of the lumbar multifidus muscle, including the area approximately 2 cm lateral to the midline at the L4 vertebral level. Ability to reliably report symptom reproduction during acupuncture stimulation. Previous experience with acupuncture treatment. Provision of written informed consent.

Exclusion criteria

Exclusion criteria: Individuals with severe fear of acupuncture treatment. Individuals who have previously experienced all acupuncture stimulation as strongly unpleasant or painful sensations. Pregnant women or individuals who may be pregnant. Individuals with bleeding disorders or those receiving anticoagulant therapy. Individuals with severe orthopedic, neurological, or psychiatric disorders. Individuals deemed unsuitable for study participation by the principal investigator.

Design outcomes

Primary

Measure	Time frame
Change in Pressure Pain Threshold (PPT) Assessment time points:Baseline, immediately after intervention	—

Secondary

Measure	Time frame
Subjective pain intensity assessed using the Numeric Rating Scale (NRS) Assessment time points:Baseline, immediately after intervention	—

Countries

Japan

Contacts

Public Contactyoji kitagawa

Kansai University of Health Sciences Faculty of Health Sciences

kitagawa@kansai.ac.jp0724538251

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026