Evaluation of Factors Affecting the Reduction in Postpartum Pelvic Floor Muscle Tension and The Therapeutic Effect

Purpose: This study investigated the risk factors associated with reductions in postpartum pel-vic floor muscle tension and evaluated improvements in pelvic floor muscle tension with electrical stimulation combined with biofeedback technology and Kegel exercis-es. Methods: We conducted a case-control study of 170 women with postpartum follow-up at Ningbo Li Huili Hospital from April 2019 to May 2020. According to the Oxford modified scale assessment(MOS), 94 and 76 women were included in the abnormal pelvic floor muscle tension group and control group, respectively. The two groups were trained by pelvic floor training. The changes in pelvic floor muscle tension before and after treatment in the two groups were analyzed to evaluate the effect of postpartum pelvic floor rehabilitation training. Results: The EMG value of the fast muscle contraction stage was negatively correlated with age and neonatal weight (P <0.05). The EMG values of slow muscle contraction and endurance were negatively correlated with weight gain during pregnancy but posi-tively correlated with age and BMI at delivery (P <0.05). The muscle tension of the abnormal muscle tension group was significantly improved and significantly higher than that of the control group (P <0.05) after the two groups received the intervention. Conclusion: The factors affecting postpartum pelvic floor muscle tension include age, delivery times, BMI at delivery and neonatal weight. Electrical stimulation combined with the biofeedback technique and Kegel exercises in the early postpartum period are effec-tive means to reduce the incidence of Pelvic floor disorders.