Faculty of Medical Sciences of the State University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.
Neurourol Urodyn. 2013 Jun;32(5):416-9. doi: 10.1002/nau.22315. Epub 2012 Oct 15.
The aim of this study was to simultaneously evaluate both transversus abdominis/internal oblique (Tra/IO) and pelvic floor muscles (PFM) during isometric exercises in nulliparous, pregnant, and postpartum women.
The study included 81 women divided into four groups: (G1) nulliparous women without urinary symptoms (n = 20); (G2) primigravid pregnant women with gestational age ≥24 weeks (n = 25); (G3) primiparous postpartum women after vaginal delivery with right mediolateral episiotomy (n = 19); (G4) primiparous postpartum women after cesarean section delivery, with 40 to 60 days of postpartum (n = 17). The assessment consisted of simultaneous surface electromyography (EMGs) of the PFM and Tra/IO, during three isometric maximum voluntary contractions.
Only nulliparous women presented significant simultaneous Tra/IO and PFM co-activation when asked to contract PFM (P = 0.0007) or Tra/IO (P = 0.00001).
There is co-activation of the transversus abdominis/internal oblique and the pelvic floor muscles in young, asymptomatic nulliparous women. This pattern was modified in primigravid pregnant and primiparous postpartum women regardless of the delivery mode.
本研究旨在同时评估未生育、妊娠和产后女性在等长运动中腹横肌/内斜肌（Tra/IO）和盆底肌（PFM）的活动。
该研究纳入了 81 名女性，分为 4 组：（G1）无尿失禁症状的未生育女性（n=20）；（G2）孕 24 周以上的初产妇（n=25）；（G3）经阴道分娩伴右侧正中旁会阴切开术的初产妇（n=19）；（G4）剖宫产术后 40-60 天的初产妇（n=17）。评估包括 PFM 和 Tra/IO 的表面肌电图（EMG）同步记录，在 3 次等长最大自主收缩时进行。
仅未生育的女性在收缩 PFM（P=0.0007）或 Tra/IO（P=0.00001）时表现出显著的 Tra/IO 和 PFM 同时激活。
年轻、无症状的未生育女性存在腹横肌/内斜肌和盆底肌的协同激活。这种模式在初产妇和经阴道分娩或剖宫产的初产妇中发生了改变。
