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Table 2 Presentation of the mean resting sEMG pre- and post-intervention in the trigger point group (n = 30) and the control group (n = 11).

From: The immediate effect of multiple mechanical impulses on electromyography and pressure pain threshold of lumbar latent trigger points: an experimental study

sEMG in μV Trigger point group Control group
Baseline mean intervention side (±SD) 3.27 (SD 3.64) 1.67 (SD 1.02)
Baseline mean contralateral side (±SD) 3.1 (SD 3.36) 1.77 (SD 1.07)
Post-intervention mean intervention side (±SD) 2,69 (SD 2.75) 1.40 (SD 1.13)
Post-intervention mean contralateral side (±SD) 2.77 (SD 2.95) 1.76 (SD 1.5)
Pre-post change significance intervention side P = 0.001 P = 0.33
Pre-post change significance contralateral side P = 0.022 P = 0.93
  1. Statistical significance was tested via the non-parametric Wilcoxon matched-pairs rank test. SD (Standard deviation)