Clinical bottom line
Targeted pelvic floor muscle training (PFMT) shows promise as a non-invasive intervention to improve urinary incontinence symptoms in patients with spinal cord injury (SCI), particularly those with neurogenic detrusor overactivity. While evidence remains limited and heterogeneous, PFMT combined with adjunctive modalities such as electrical stimulation may enhance pelvic floor function and continence control. Clinicians should consider PFMT as a component of multidisciplinary rehabilitation for SCI patients experiencing urinary incontinence, recognizing that individualized protocols and further validation are needed.
What the evidence shows
Urinary incontinence is a common and distressing complication in individuals with SCI, often related to neurogenic bladder dysfunction. Pelvic floor muscle training, a well-established intervention for urinary incontinence in other populations, is increasingly studied in SCI patients for its potential to improve pelvic floor muscle strength and modulate bladder function.
Vásquez et al. (2015) investigated PFMT in SCI patients with neurogenic detrusor overactivity and found that targeted training led to improvements in pelvic floor muscle function and reductions in incontinence episodes. This study supports the hypothesis that voluntary pelvic floor contractions can exert inhibitory effects on detrusor overactivity, potentially improving continence.
Earlier work by Ishigooka et al. (1996) explored electrical pelvic floor stimulation as an alternative or adjunctive treatment for reflex urinary incontinence in SCI, demonstrating that neuromuscular stimulation may enhance pelvic floor muscle activation and continence control. This suggests that combining PFMT with electrical stimulation could be beneficial, especially in patients with impaired voluntary muscle control.
In broader contexts, PFMT has a strong evidence base for urinary incontinence management. For example, Chan Fun-yee et al. (year unknown from the list) demonstrated the efficacy of an evidence-based PFMT program in preventing urinary incontinence after radical prostatectomy, highlighting the generalizability of pelvic floor rehabilitation principles. Similarly, systematic reviews in non-SCI populations (Hay-Smith et al., 2008; Cochrane Clinical Answers, 2016) confirm that PFMT reduces urinary incontinence symptoms, reinforcing its mechanistic rationale.
Emerging modalities such as virtual reality-assisted PFMT may further enhance engagement and outcomes, as suggested by Ashwani et al. (2025), though this remains exploratory in SCI populations.
Caveats and uncertainty
The current evidence specific to SCI patients is limited by small sample sizes, heterogeneity in injury levels and severity, and variability in PFMT protocols. Many studies are observational or pilot trials, limiting the strength of causal inference. The degree of voluntary pelvic floor muscle control varies widely among SCI patients, which may affect the feasibility and effectiveness of PFMT.
Electrical stimulation studies are mostly dated and require replication with modern devices and rigorous methodology. The optimal parameters for PFMT intensity, frequency, and duration in SCI remain undefined. Additionally, the impact of PFMT on quality of life and long-term continence outcomes in SCI is not well characterized.
Finally, most evidence derives from neurogenic bladder dysfunction with detrusor overactivity; applicability to other bladder dysfunction types in SCI is unclear.
How this may change practice
Clinicians managing SCI patients with urinary incontinence should consider incorporating targeted PFMT into rehabilitation plans, especially for those with preserved pelvic floor muscle activation. Combining PFMT with electrical stimulation may be advantageous in patients with impaired voluntary control, though this requires access to appropriate equipment and expertise.
Given the limited high-quality evidence, PFMT should be integrated as part of a multidisciplinary approach including urology, physical therapy, and rehabilitation medicine. Patient education on pelvic floor anatomy and function, as well as adherence support, will be critical.
Future adoption of virtual reality or biofeedback-enhanced PFMT may improve patient engagement and outcomes but currently remains investigational.
Ongoing research is needed to establish standardized PFMT protocols tailored to SCI subpopulations and to evaluate long-term functional and quality-of-life benefits.