PainSci commentary on Fernández-de-Las-Peñas 2006: ?This page is one of thousands in the PainScience.com bibliography. It is not a general article: it is focused on a single scientific paper, and it may provide only just enough context for the summary to make sense. Links to other papers and more general information are provided wherever possible.
This pilot study compared the effects of two kinds of massage on trigger points in 40 people with neck pain. Pain and trigger point sensitivity were measured right before and after a single brief application of either ischemic pressure or transverse friction massage.
Treatment improved scores in both cases, but by unimpressive amounts, a classic damned-with-faint-praise result. The authors conclusion that these techniques were “equally effective in reducing tenderness in MTrPs” is not justified by the data.
Although the authors claim a “large” effect size, it’s based on an intra-group comparison that is meaningless. Without comparison to a control group, in principle we have no idea if the effects reported were actually caused by the treatments, or just by things like touch and medical attention. Using common sense instead of stats, for ischemic pressure they observed a drop on a 10-point pain scale of just .8, from 4.6 to 3.8. This is not nothing, but it’s in “take the edge off” territory, less than we’d expect from an aspirin for a headache.
~ Paul Ingraham
original abstract †Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
The aim of this pilot study was to compare the effects of a single treatment of the ischemic compression technique with transverse friction massage for myofascial trigger point (MTrP) tenderness. Forty subjects, 17 men and 23 women, aged 19–38 years old, presenting with mechanical neck pain and diagnosed with MTrPs in the upper trapezius muscle, according to the diagnostic criteria described by Simons and by Gerwin, participated in this pilot study. Subjects were divided randomly into two groups: group A which was treated with the ischemic compression technique, and group B which was treated with a transverse friction massage. The outcome measures were the pressure pain threshold (PPT) in the MTrP, and a visual analogue scale assessing local pain evoked by a second application of 2.5 kg/cm2 of pressure on the MTrP. These outcomes were assessed pre-treatment and 2 min post-treatment by an assessor blinded to the treatment allocation of the subject. The results showed a significant improvement in the PPT (P=0.03), and a significant decrease in the visual analogue scores (P=0.04) within each group. No differences were found between the improvement in both groups (P=0.4). Ischemic compression technique and transverse friction massage were equally effective in reducing tenderness in MTrPs.
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- Association of Lumbar MRI Findings with Current and Future Back Pain in a Population-based Cohort Study. Kasch 2022 Spine (Phila Pa 1976).
- A double-blinded randomised controlled study of the value of sequential intravenous and oral magnesium therapy in patients with chronic low back pain with a neuropathic component. Yousef 2013 Anaesthesia.
- Is Neck Posture Subgroup in Late Adolescence a Risk Factor for Persistent Neck Pain in Young Adults? A Prospective Study. Richards 2021 Phys Ther.
- Sudden amnesia resulting in pain relief: the relationship between memory and pain. Choi 2007 Pain.
- Photobiomodulation therapy is not better than placebo in patients with chronic nonspecific low back pain: a randomised placebo-controlled trial. Guimarães 2021 Pain.