Effects of compression at myofascial trigger points in patients with acute low back pain: A randomized controlled trial.
BACKGROUND
Although there is some evidence that massage therapy, especially compression at myofascial trigger points (MTrPs), is effective for sub-acute and chronic low back pain, the effectiveness of massage therapy with compression at MTrPs for acute low back pain has not been studied.


METHODS
To evaluate the effectiveness of compression at MTrPs for acute low back pain, 63 patients with acute low back pain were randomly assigned to one of three groups: the MTrP group who received compression at MTrPs (N = 23), the non-MTrP group who received compression at non-trigger points (N = 21), and the effleurage massage group who received superficial massage (N = 19). The patients received the assigned treatment 3 times/week for 2 weeks. The subjective pain intensity in static and dynamic conditions and disability caused by low back pain were measured by the visual analogue scale (VAS) and Roland-Morris questionnaire (RMQ), respectively; along with the range of motion (ROM) at the lumbar region and pressure pain threshold (PPT) at trigger points before treatment (baseline), 1 week after the start of treatment, and 1 month after the end of treatment (follow-up).


RESULTS
Static and dynamic VAS score, PPT and ROM were significantly improved in the MTrP group compared with those in the non-MTrP and effleurage groups.


CONCLUSIONS
These results indicate that compression at MTrPs is effective to treat acute low back pain compared with compression at non-MTrPs and superficial massage. For this article, a commentary is available at the Wiley Online Library.