PMID- 25801100 OWN - NLM STAT- MEDLINE DCOM- 20170209 LR - 20220318 IS - 1532-2769 (Electronic) IS - 1356-689X (Linking) VI - 20 IP - 6 DP - 2015 Dec TI - Changes in lumbar multifidus muscle function and nociceptive sensitivity in low back pain patient responders versus non-responders after dry needling treatment. PG - 769-76 LID - S1356-689X(15)00051-X [pii] LID - 10.1016/j.math.2015.03.003 [doi] AB - BACKGROUND: Little is known about the physiologic mechanism of dry needling. While some evidence suggests that dry needling may decrease nocioceptive sensitivity and facilitate muscle function, no studies to date have examined these physiologic changes compared to clinical outcomes. OBJECTIVE: To examine changes in lumbar multifidus (LM) muscle function and nociceptive sensitivity after dry needling in patients with LBP and to determine if such changes differ in patients that exhibit improved disability (responders) and those that do not (non-responders). DESIGN: Quasi-experimental study. METHODS: Sixty-six volunteers with mechanical LBP (38 men, age = 41.3 +/- 9.2 years) completed the study. Ultrasound measurements and pain algometry of the LM were taken at baseline and repeated immediately following dry needling treatment to the LM muscles and after one week. The percent change in muscle thickness from rest to contraction was calculated for each time point to represent muscle function. Pressure pain threshold (PPT) was used to measure nociceptive sensitivity. Participants were dichotomized as responders and non-responders based on whether or not they experienced clinical improvement using the modified Oswestry Disability Index after one week. 2 x 3 mixed-model ANOVA were conducted for group (responders vs. non-responders) by time. RESULTS: Patient responders exhibited larger improvements in LM muscle contraction and nociceptive sensitivity 1 week, but not immediately, after dry needling than non-responders. CONCLUSIONS: Our results suggest that there may be lasting and clinically relevant sensorimotor changes that occur in LBP patients that improve with dry needling treatment that partially explain the physiologic mechanism of action. CI - Published by Elsevier Ltd. FAU - Koppenhaver, Shane L AU - Koppenhaver SL AD - U.S. Army-Baylor University Doctoral Program in Physical Therapy, San Antonio, TX, USA. Electronic address: shanekoppenhaver@mac.com. FAU - Walker, Michael J AU - Walker MJ AD - U.S. Army-Baylor University Doctoral Program in Physical Therapy, San Antonio, TX, USA. FAU - Su, Jonathan AU - Su J AD - U.S. Army-Baylor University Doctoral Program in Physical Therapy, San Antonio, TX, USA. FAU - McGowen, Jared M AU - McGowen JM AD - U.S. Army-Baylor University Doctoral Program in Physical Therapy, San Antonio, TX, USA. FAU - Umlauf, Lindsey AU - Umlauf L AD - U.S. Army-Baylor University Doctoral Program in Physical Therapy, San Antonio, TX, USA. FAU - Harris, Kevin D AU - Harris KD AD - Department of Rehabilitation, Guthrie Ambulatory Health Clinic, Ft. Drum, New York, USA. FAU - Ross, Michael D AU - Ross MD AD - Department of Physical Therapy, University of Scranton, Scranton, PA, USA. LA - eng PT - Journal Article DEP - 20150313 PL - Scotland TA - Man Ther JT - Manual therapy JID - 9610924 SB - IM MH - Acupuncture Therapy/*methods MH - Adult MH - Cohort Studies MH - Female MH - Humans MH - Low Back Pain/diagnostic imaging/*therapy MH - Male MH - Middle Aged MH - Muscle Contraction/physiology MH - Nociceptors/*physiology MH - *Pain Measurement MH - Pain Threshold/*physiology MH - Paraspinal Muscles/physiopathology MH - Risk Assessment MH - Severity of Illness Index MH - Treatment Failure MH - Treatment Outcome MH - Ultrasonography, Doppler/methods OTO - NOTNLM OT - Acupuncture OT - Low back pain OT - Muscle contraction OT - Ultrasonography EDAT- 2015/03/25 06:00 MHDA- 2017/02/10 06:00 CRDT- 2015/03/25 06:00 PHST- 2014/08/25 00:00 [received] PHST- 2015/02/26 00:00 [revised] PHST- 2015/03/04 00:00 [accepted] PHST- 2015/03/25 06:00 [entrez] PHST- 2015/03/25 06:00 [pubmed] PHST- 2017/02/10 06:00 [medline] AID - S1356-689X(15)00051-X [pii] AID - 10.1016/j.math.2015.03.003 [doi] PST - ppublish SO - Man Ther. 2015 Dec;20(6):769-76. doi: 10.1016/j.math.2015.03.003. Epub 2015 Mar 13.