Abdominal muscles activity during abdominal bracing and posterior pelvic tilt in women after natural birth and after caesarean delivery

Abstract

Exercises after pregnancy can reduce the severity and risk of postnatal locomotor system disorders and muscular dysfunctions. The aim of the study was to evaluate electromyographic activity of abdominal muscles in women who gave birth naturally and via a caesarean section, and to compare it to a group of women who have never given birth. 27 women were included into the study after completing the personal questionnaire and functional examination. The surface electromyography during abdominal bracing and posterior pelvic tilt was used to test rectus abdominis muscles and internus oblique/ transversus abdominis muscles bilaterally. After normalization test, patients were asked to perform abdominal bracing and posterior pelvic tilt exercises. Activity of rectus abdominis muscle is higher in posterior pelvic tilt compared to abdominal bracing. It should be noted that the internus oblique/transversus abdominis muscle activity in both exercises is similar. In women after natural birth and after a cesarean section who experienced no locomotor system symptoms, no statistically significant differences in abdominal muscle activity in both exercises were observed. In each group being studied, posterior pelvic tilt activated rectus abdominis muscles to a greater extent than just bracing.