Our previous study demonstrated that the spinopelvic skeletal shape had a close relationship with pelvic floor dysfunction. As the spine is a continuous boney structure that is closely associated with abdominal and pelvic dynamics, it is commonly recognized that spine restructure through posture reeducation would benefit the functions of the PFMs. Global postural reeducation (GPR) was projected to correct postural misalignments by stretching the muscle chains. How to have the patients perform PFMT voluntarily with high compliance is still a challenge, and the optimal number of contraction repetitions, the time and duration of PFMT contraction, and the frequency of doing PFMT are the determinants of a PFMT protocol to its effectiveness. There currently is no uniform protocol for PFMT during pregnancy, and the protocols vary widely across publications. Some authors pointed out that the diversity of different studies on the compliance of the patients to PFMT and the procedural correctness may accounted for the inconsistent results. suggested that PFMT during pregnancy did not prevent urinary incontinence according to a systematic literature review and meta-analysis of RCTs. conducted a randomized control trial (RCT) with 268 primiparas women, and concluded that women in exercise groups who performed PFMT regularly had lower SUI occurrence at the 3rd month postpartum than the control group. Pelvic floor muscle training (PFMT) has been recommended as the first optional treatment of SUI, while the effect of prenatal PFMT on SUI prevention is inconclusive. Although reducing delivery injuries is the key to prevent SUI, there is currently no consensus among medical society on the effective method for SUI prevention during pregnancy. Pregnancy and delivery have been proven to play important roles for SUI development because it weakens pelvic floor muscle (PFM) strength. The prevalence of SUI at the 8th week postpartum was reported to be 25.7%, which exerts a widespread negative impact on women’s health. Stress urinary incontinence (SUI) is defined as “involuntary leakage of urine when abdominal pressure increases”. Trial registration: The trial has been registered at Chinese Clinical Trial Registry (registration number: ChiCTR2000029618). Discussion: This protocol is anticipated to evaluate the efficacy of the intervention via video app for the design of a future randomized control trial (RCT). The primary outcome is the occurrence of the symptomatic SUI and positive stress test at the 6th week postpartum. Data will be collected regarding urinary leakage symptoms, the stress test, the modified Oxford Scale, pelvic floor ultrasound, perineal laceration classification at delivery, neonatal Apgar score, and questionnaires (PISQ-12, ICIQ-UI SF, I-QOL, OABSS). The experimental stage will be from the 16th gestation week (GW) to the 12th month postpartum, with eight appointments at the 16th, 28th, 37th GW, delivery, the 6th week and the 3rd, 6th, and 12th month postpartum. Methods: As a randomized controlled trial, eligible participants will be randomized (1:1) into an exercise group and a control group to perform PFMT regularly following video guidance or with no intervention, respectively. Background: As the effectiveness on stress urinary incontinence (SUI) prevention of pelvic floor muscle training (PFMT) for pregnant women has been inconclusive, we are planning to conduct a trial to evaluate a video program designed for prevention of SUI developed through combining PFMT with global postural reeducation (GPR).
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