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Table 2 Thickness of the right transverse abdominal muscle (TrA) in participants with pelvic girdle pain (PGP) and controls without PGP

From: The transverse abdominal muscle is excessively active during active straight leg raising in pregnancy-related posterior pelvic girdle pain: an observational study

  PGP
(n = 43)
Controls
(n = 39)
Group difference
TrA thickness at rest in mm, median (IQR) 3.1 (1.6) 3.1 (1.6) 0.17 (95% CI −0.25 to 0.54)
p = 0.54
TrA thickness increase during ASLR ipsilateral in %, median (IQR) 31 (46) 11 (25) 25.7 (95% CI 14.9 to 41.2)
p < 0.001
TrA thickness increase during ASLR contralateral in %, median (IQR) 31 (57) 13 (22) 23.6 (95% CI 10.4 to 37.5)
p = 0.005
  1. ASLR active straight leg raising, CI confidence interval, IQR Interquartile range