Comparison of the effect of two methods of ischemic compression of trigger points on the change of pain threshold and electromyographic parameters of the trapezius muscle.

Introduction
The aim of the study was to compare the effect of ischemic compression of trigger points, in which pressure was maintained in a pulsating (group A) and constant (group B) manner on the pain threshold and EMG parameters of the trapezius muscle.

Material and methods
28 students with a latent trigger point in the described muscle participate in use. Compression pain threshold measured using a hand dynamometer, muscle biopotential values at rest, and motor activity determined using EMG. Both parameters were evaluated before and after the therapy.

Results
in each of the examined groups a statistically significant decrease in the pain threshold was observed, additionally in group B there was a significant decrease in the muscle resting tone. The analysis of other parameters did not show any significant changes.

Conclusions
according to the authors, ischemic compression is characterized by greater clinical usefulness in the treatment of pain and increased muscle tone.