Objective To assess the efficacy of electrostimulation combined with biological feedback in improving postpartum pelvic floor muscle strength and its function

and also explore its utility in clinical practice.Methods A total of352 women who delivered and returned for postpartum checkups in a Shanxi hospital between November 2017 and October 2018 were included in this study.Based on a random number table

these women were allocated into the training group（n=235）and the control group（n=117）.For patients in the training group

electrostimulation plus biological feedback were administered twice a week

two weeks as one cycle

for two cycles（8 treatment sessions in total）;for those in the control group

routine counselling and observation were performed

without any specific intervention.At 42 days and 6 months after delivery

electrophysiological study of pelvic floor musculature

Pelvic Floor Impact Questionnaire Short Form（PFIQ）

and Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire（PISQ）were used to assess the clinical efficacy of electrostimulation combined with biological feedback in improving postpartum pelvic floor muscle strength and its function.Results At 42 days after delivery

type I muscle fiber strength and fatigue

type II muscle fiber strength and fatigue

and vaginal maximum dynamic pressure were similar between the two groups（P>0.05）.At 6 months after delivery

type I muscle fiber strength and fatigue

typeⅡ muscle fiber strength

and vaginal maximum dynamic pressure in the training group were significantly higher than those in the control group（P<0.05）

but type II muscle fiber fatigue was similar between the two groups（P>0.05）.At 42 days after delivery

the proportions of patients who answered yes to the PFIQ questions were comparable between the two groups（P>0.05）.At 6 months after delivery

the proportions of patients who answered yes to the bladder/urine and vagina/pelvis questions in PFIQ in the training group were significantly lower than those in the control group（P<0.05）.At 42 days after delivery

the proportion of patients who had sexual activities was low and similar in the two groups（P>0.05）.At 6 months after delivery

the PISQ score in the training group was significantly higher than that in the control group（P<0.05）.Conclusion Electrostimulation combined with biological feedback in early postpartum stage seems to be effective in improving pelvic floor muscle strength and its function

which deserves widespread clinical application.