Acupuncture combined with biofeedback electrical stimulation for female stress urinary incontinence: a systematic review and meta-analysis
Liu et al. · Frontiers in Medicine · 2026
Evidence Level
STRONGOBJECTIVE
To determine the clinical efficacy of acupuncture combined with biofeedback electrical stimulation for stress urinary incontinence in women
WHO
2,860 women with stress urinary incontinence, including postpartum, primary, perimenopausal, and postmenopausal patients
DURATION
Ranged from 20 days to 3 months, with most studies using 4-8 weeks
POINTS
Zhongliao, Huiyang, Guanyuan, Qihai, Zhongji, Sanyinjiao, Zusanli, Shenshu, sacral points
🔬 Study Design
Acupuncture + Biofeedback
n=1430
Acupuncture/moxibustion + biofeedback electrical stimulation
Biofeedback only
n=1430
Biofeedback electrical stimulation alone
📊 Results in numbers
Improvement in clinical efficacy
Reduction in leakage episodes
Reduction in leakage volume
Improvement in pelvic muscle strength
Reduction in ICIQ-SF score
Percentage highlights
📊 Outcome Comparison
Relative Clinical Efficacy
This study showed that combining acupuncture with pelvic floor physical therapy is more effective than physical therapy alone for treating urine leakage during coughing, sneezing, or exertion. Women who received the combined treatment had fewer leakage episodes and better quality of life.
Article summary
Plain-language narrative summary
This systematic review and meta-analysis represents an important milestone in understanding the treatment of stress urinary incontinence (SUI) in women, analyzing data from 33 randomized controlled trials that included 2,860 participants. SUI is a condition that significantly affects women's quality of life, characterized by involuntary loss of urine during activities that increase intra-abdominal pressure, such as exercise, coughing, or sneezing. The prevalence of this condition ranges from 10-40% globally, reaching up to 50% in women aged 45-59 years, highlighting its clinical and socioeconomic relevance. The study specifically investigated the efficacy of combining acupuncture with biofeedback electrical stimulation compared with biofeedback alone.
The methodology was rigorous, following PRISMA guidelines and registered in the PROSPERO system. The researchers conducted comprehensive searches in multiple databases, including CNKI, Wanfang, VIP, PubMed, Cochrane Library, Embase, and Web of Science, from inception to June 2025. The results consistently demonstrated the superiority of combined treatment. Overall clinical efficacy was 20% higher in the group that received acupuncture combined with biofeedback (RR=1.20, 95% CI 1.16-1.25).
Even more impressive were the significant reductions in frequency of leakage episodes (SMD=-2.26) and in urinary leakage volume (SMD=-1.79), indicating substantial and clinically relevant improvement. The study also evaluated pelvic floor muscle strength, finding significant improvements in the combined treatment group (SMD=0.99), suggesting that acupuncture may potentiate the effects of muscle strengthening promoted by biofeedback. Scores on the ICIQ-SF questionnaire, which assesses the impact of incontinence on quality of life, showed mean reductions of 2 points in the combined group, representing clinically significant improvement in patient well-being. Subgroup analyses revealed valuable insights for clinical practice.
Different acupuncture modalities showed efficacy, including moxibustion, electroacupuncture, and traditional acupuncture, suggesting flexibility in the choice of technique. Particularly notable was the superior efficacy in postpartum women, where the combination showed more pronounced benefits, likely due to the specific nature of postpartum pelvic dysfunction. As for treatment duration, longer periods (8 weeks) showed superior results compared with shorter treatments, supporting extended treatment protocols for optimal outcomes. From a mechanistic standpoint, the efficacy of the combination can be explained by the complementarity of the treatments.
Biofeedback electrical stimulation acts directly on the pelvic floor musculature through neuromuscular mechanisms, promoting proprioceptive awareness and muscle strengthening. Acupuncture, in turn, modulates the nervous system through neuroendocrine pathways, stimulating specific points that regulate micturition centers in the central and peripheral nervous system. Points such as Zhongliao and the 'four sacral points' have anatomical proximity to the S2-S4 sacral nerves, which are fundamental for bladder control. This synergy between local muscle strengthening and systemic neurological modulation may explain the superior results observed.
The clinical implications are substantial. For healthcare professionals, this study provides robust evidence to recommend the integration of acupuncture into pelvic floor rehabilitation protocols. Suggested protocols include 30-minute sessions, 3-5 times per week, for 8 weeks, combining specific points such as Guanyuan, Qihai, Zhongji, and Sanyinjiao with 20-30 minutes of biofeedback. For patients, it represents a non-pharmacological and minimally invasive therapeutic option that can significantly reduce symptoms and improve quality of life.
However, the study acknowledges important limitations that should inform interpretation of the results and guide future research.
Strengths
- 1Large sample with 2,860 participants from 33 studies
- 2Rigorous methodology following PRISMA guidelines
- 3Detailed subgroup analyses by modality and duration
- 4Multiple clinically relevant outcomes evaluated
- 5Consistent evidence of superior efficacy of combined treatment
Limitations
- 1Predominance of Chinese-language studies may introduce publication bias
- 2High heterogeneity in acupuncture protocols across studies
- 3Lack of blinding due to the nature of acupuncture
- 4Absence of long-term follow-up to assess sustainability
- 5Subjective outcomes may be influenced by expectations
Expert Commentary
Prof. Dr. Hong Jin Pai
PhD in Sciences, University of São Paulo
▸ Clinical Relevance
Stress urinary incontinence affects between 10% and 40% of adult women, with peak prevalence reaching 50% in the 45-59 age range — a population that frequently moves between gynecologists, urologists, and general practitioners without receiving an adequate integrative proposal. This meta-analysis, consolidating data from 2,860 participants in 33 randomized controlled trials, offers solid grounding for including acupuncture in pelvic floor rehabilitation protocols. The 20% superiority in overall clinical efficacy of combined treatment is a result of sufficient magnitude to guide therapeutic decisions. The postpartum profile responds with even more pronounced benefits, opening space for early intervention during this window of greater neuromuscular plasticity. For the physician acupuncturist working in pelvic pain or women's rehabilitation services, this work consolidates the logic of integration, not substitution, between acupuncture and biofeedback with electrical stimulation.
▸ Notable Findings
The effect sizes reported go beyond statistical significance and reach concrete clinical relevance: SMD of -2.26 for reduction in frequency of leakage episodes and -1.79 for leakage volume are expressive magnitudes, not trivial. The gain in pelvic muscle strength with SMD of 0.99 suggests that acupuncture acts not only as a central modulator but potentiates the local neuromuscular recruitment induced by biofeedback — a mechanistically plausible hypothesis given the anatomical proximity of sacral points such as Zhongliao to the S2-S4 nerves that govern bladder control. The 2-point reduction in ICIQ-SF, although modest in absolute value, lies above the threshold for minimal clinically important difference for the instrument. It is also noteworthy that multiple modalities — moxibustion, electroacupuncture, and traditional acupuncture — demonstrated efficacy, preserving technical flexibility for the clinician. The subgroup analysis indicating superiority with 8 weeks of treatment reinforces that longer protocols are necessary for consolidation of gains.
▸ From My Experience
In my practice with pelvic dysfunction, I have observed that patients with stress incontinence begin to report subjective reduction in leakage episodes between the third and fifth session, especially when we combine acupuncture with some form of electrical stimulation. We usually work with 8- to 10-week protocols at the Pain Center, and experience shows that shortening this timeframe compromises the consolidation of results, something this work confirms quantitatively. The patient profile that responds best, in my observation, is the woman in the recent postpartum or early climacteric period, with pelvic dysfunction not yet showing a prominent mixed urgency component. When there is a mixed component or significant detrusor overactivity, the protocol must be adapted and the expectation of response is more cautious. I routinely combine supervised Kegel exercises and, when available, specialized pelvic floor physical therapy — acupuncture potentiates, but does not replace direct muscle work. Points such as Sanyinjiao, Guanyuan, and the sacral points are my foundation, with low-frequency electroacupuncture at the sacral points for greater neuromotor recruitment.
Full original article
Read the full scientific study
Frontiers in Medicine · 2026
DOI: 10.3389/fmed.2026.1760125
Access original articleThis study underpins the editorial content of the site.
Condition pages and clinical articles that cite this evidence as the basis of their recommendations.
Scientific Review
Marcus Yu Bin Pai, MD, PhD
CRM-SP: 158074 | RQE: 65523 · 65524 · 655241
PhD in Health Sciences, University of São Paulo. Board-certified in Pain Medicine, Physical Medicine and Rehabilitation, and Medical Acupuncture. Scientific review and curation of every entry in this library.
Learn more about the author →Medical disclaimer: This content is for educational purposes only and does not replace consultation, diagnosis, or treatment by a qualified professional. Some information may be assisted by artificial intelligence and is subject to inaccuracies. Always consult a physician.
Content reviewed by the medical team at CEIMEC — Integrated Centre for Chinese Medicine Studies, a reference in Medical Acupuncture for over 30 years.
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