PMID- 22200384 OWN - NLM STAT- MEDLINE DCOM- 20120217 LR - 20111227 IS - 1532-821X (Electronic) IS - 0003-9993 (Linking) VI - 93 IP - 1 DP - 2012 Jan TI - Sacroiliac joint manipulation attenuates alpha-motoneuron activity in healthy women: a quasi-experimental study. PG - 56-61 LID - 10.1016/j.apmr.2011.05.027 [doi] AB - OBJECTIVE: To determine whether sacroiliac joint (SIJ) manipulation decreases alpha-motoneuron activity and increases the pressure pain threshold (PPT) over the posterior superior iliac spine (PSIS) in healthy women. DESIGN: Quasi-experimental study. SETTING: A university medical center. PARTICIPANTS: Healthy young women (N=20) aged 18 to 30 years were recruited from among the students of a university medical center after a request for volunteers. INTERVENTIONS: Joint manipulation consisted of the supine rotational glide manipulation for the sacroiliac region. PPT measurements from the PSIS and Hoffman-reflex (H-reflex) amplitudes from the tibial nerve on the same side were recorded before and after joint manipulation. PPT was monitored for 15 minutes and H-reflex for 20 minutes after the procedure. MAIN OUTCOME MEASURES: Changes in tibial nerve H-reflex amplitude and PPT values after SIJ manipulation. RESULTS: SIJ manipulation attenuated alpha-motoneuronal activity significantly (P<.05) but transiently, since the decrease was seen only for 20 seconds after the intervention. There was no positive significant difference in the PPT after SIJ manipulation at any time during postintervention follow-up. CONCLUSIONS: SIJ manipulation produced a transient attenuation of alpha-motoneuron excitability in healthy women. These findings demonstrate that our manipulation technique can lead to a short-term reduction in muscle tone as a result of changes in sensory discharge, predominantly in la afferents. SIJ manipulation did not significantly affect the PPT in healthy women. CI - Copyright (c) 2012 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved. FAU - Orakifar, Neda AU - Orakifar N AD - Physiotherapy Section, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran. FAU - Kamali, Fahimeh AU - Kamali F FAU - Pirouzi, Soraya AU - Pirouzi S FAU - Jamshidi, Farshad AU - Jamshidi F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Arch Phys Med Rehabil JT - Archives of physical medicine and rehabilitation JID - 2985158R SB - IM MH - Adolescent MH - Adult MH - Analysis of Variance MH - Electromyography/methods MH - Female MH - H-Reflex/*physiology MH - Humans MH - Manipulation, Spinal/*methods MH - Motor Activity/physiology MH - Motor Neurons/*physiology MH - Pain Threshold MH - Reference Values MH - Research Design MH - Sacroiliac Joint/*physiology MH - Sampling Studies MH - Young Adult EDAT- 2011/12/28 06:00 MHDA- 2012/02/18 06:00 CRDT- 2011/12/28 06:00 PHST- 2011/03/16 00:00 [received] PHST- 2011/05/22 00:00 [revised] PHST- 2011/05/23 00:00 [accepted] PHST- 2011/12/28 06:00 [entrez] PHST- 2011/12/28 06:00 [pubmed] PHST- 2012/02/18 06:00 [medline] AID - S0003-9993(11)00375-3 [pii] AID - 10.1016/j.apmr.2011.05.027 [doi] PST - ppublish SO - Arch Phys Med Rehabil. 2012 Jan;93(1):56-61. doi: 10.1016/j.apmr.2011.05.027.