Srbely John Z, Vernon Howard, Lee David, Polgar Miranda
Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario, Canada.
J Manipulative Physiol Ther. 2013 Jul-Aug;36(6):333-41. doi: 10.1016/j.jmpt.2013.01.005. Epub 2013 Jul 3.
The purpose of this study was to investigate if spinal manipulative therapy (SMT) can evoke immediate regional antinociceptive effects in myofascial tissues by increasing pressure pain thresholds (PPTs) over myofascial trigger points in healthy young adults.
A total of 36 participants (19 men, 17 women; age, 28.0 [5.3] years; body mass index, 26.5 [5.7] kg/m(2)) with clinically identifiable myofascial trigger points in the infraspinatus and gluteus medius muscles were recruited from the University of Guelph, Ontario, Canada. Participants were randomly allocated to 2 groups. Participants in the test group received chiropractic SMT targeted to the C5-C6 spinal segment. Participants in the control group received sham SMT. The PPT was recorded from the right infraspinatus and gluteus medius muscles at baseline (preintervention) and 1, 5, 10, and 15 minutes postintervention.
Three participants were disqualified, resulting in a total of 33 participants analyzed. Significant increases in the PPT (decreased pain sensitivity) were observed in the test infraspinatus group when compared with test gluteus medius, control infraspinatus, and control gluteus medius groups (P < .05). No significant differences in PPT were observed at any time point when comparing test gluteus medius, control infraspinatus, and control gluteus medius groups (P > .05).
This study showed that SMT evokes short-term regional increases in PPT within myofascial tissues in healthy young adults.
本研究旨在调查脊柱推拿疗法（SMT）是否能通过提高健康年轻成年人肌筋膜触发点的压力疼痛阈值（PPTs），在肌筋膜组织中诱发即时的局部抗伤害感受作用。
从加拿大安大略省圭尔夫大学招募了36名参与者（19名男性，17名女性；年龄28.0[5.3]岁；体重指数26.5[5.7]kg/m²），其在冈下肌和臀中肌有临床可识别的肌筋膜触发点。参与者被随机分为两组。试验组参与者接受针对C5-C6脊柱节段的脊椎按摩疗法SMT。对照组参与者接受假SMT。在基线（干预前）以及干预后1、5、10和15分钟记录右侧冈下肌和臀中肌的PPT。
3名参与者被取消资格，最终共分析了33名参与者。与试验臀中肌组、对照冈下肌组和对照臀中肌组相比，试验冈下肌组的PPT显著增加（疼痛敏感性降低）（P<.05）。在比较试验臀中肌组、对照冈下肌组和对照臀中肌组时，在任何时间点均未观察到PPT的显著差异（P>.05）。
本研究表明，SMT可使健康年轻成年人肌筋膜组织内的PPT短期内局部增加。
