Comparative analysis of biofeedback and physical therapy for treatment of urinary stress incontinence in women.

OBJECTIVE

To compare the effectiveness of an intensive group physical therapy program with individual biofeedback training for female patients with urinary stress incontinence.

DESIGN

Randomized study of two therapeutic interventions consisting of a specific physical therapy program (PT) or biofeedback training (BF) daily for 4 wk, followed by a 2-mo, unsupervised home exercise program in both groups in an outpatient clinic of a large university hospital. Forty women, referred by gynecologists for nonoperative treatment of genuine stress incontinence of mild-to-moderate severity, were included. Measurements of daytime/nocturnal urinary frequency and subjective improvement of incontinence were the main outcome measures at initial presentation, after completion of the therapy program, and at follow-up after 3 mo. Standardized examinations of digital contraction strength, speculum tests, and manometric measurements were documented as secondary outcome measures.

RESULTS

In the PT group, the daytime urination frequency decreased 22% after 4 wk of therapy and 19% after 3 mo (P < 0.05) from baseline. The nocturnal urination frequency was reduced by 66% after 4 wk of therapy and 62% after 3 mo (P < 0.001). In the BF group, the daily urination frequency decreased 10% after 4 wk of therapy and 5% after 3 mo (P > 0.05). The nocturnal urination frequency declined 36% after 4 wk of therapy and 66% after 3 months (P < 0.05). Subjective assessment after 3 mo showed that in the PT group, 28% of patients were free of incontinence episodes, 68% reported improved symptoms (incontinence episodes improved by >50%), and 4% were unchanged. In the BF group, 62% were free of incontinence episodes, and 38% were improved. Results of the digital contraction strength assessments, speculum tests, and manometric measurements showed statistically significant improvement in all variables in both groups after 3 months.

CONCLUSION

Four weeks of both intensive group physical therapy or individual biofeedback training followed by an unsupervised home exercise program for 2 mo are effective therapies for female urinary stress incontinence and result in a significantly reduced nocturnal urinary frequency and improved subjective outcome. Only group physical therapy resulted in reduced daytime urinary frequency. BF therapy resulted in a better subjective outcome and higher contraction pressures of the pelvic floor muscles.