Objectives: Urinary incontinence is an important condition that can affect both quality of life and sexual function in women. This study aimed to compare the effects of pelvic floor muscle training (PFMT) alone with PFMT combined with either biofeedback or radiofrequency therapy on urinary incontinence and sexual function in women with urinary incontinence.
Materials and Methods: This randomized clinical trial included 45 women aged 35–55 years with urinary incontinence and sexual dysfunction. Participants were allocated by block randomization to three groups: PFMT alone, biofeedback combined with PFMT (BF + PFMT), or radiofrequency combined with PFMT (RF + PFMT). The intervention lasted 5 weeks, with three PFMT sessions per week in all groups. Biofeedback was provided during all treatment sessions in the BF + PFMT group, whereas the RF + PFMT group received radiofrequency therapy once weekly in addition to PFMT. Urinary leakage, pelvic floor muscle strength and endurance, ICIQ-VS, ICIQ-SF SCORE, FSFI, and treatment satisfaction were assessed at baseline, immediately after treatment, and at the one-month follow-up.
Results: All three groups showed significant improvements in the assessed outcomes following treatment (P < 0.01). However, the magnitude of improvement differed among the interventions. Compared with the other groups, BF + PFMT produced greater improvements in pelvic floor muscle strength (P < 0.001, η²p = 0.81), pelvic floor muscle endurance (P < 0.001, η²p = 0.78), and urinary incontinence symptoms (P < 0.001, η²p = 0.91). In contrast, RF + PFMT resulted in greater improvement in sexual function, as measured by the FSFI (P < 0.001, η²p = 0.73).
Conclusion: All three treatment approaches were associated with improvements in urinary incontinence, pelvic floor muscle function, and sexual function. Adding biofeedback to PFMT appeared to provide greater benefits for urinary symptoms and pelvic floor muscle performance, whereas combining PFMT with radiofrequency therapy appeared to have a greater effect on sexual function. Further studies with larger sample sizes are warranted to confirm these findings.