Which pelvic floor muscle group is primarily targeted by pelvic floor muscle training for stress incontinence?

• A. The external anal sphincter.
• B. The pubococcygeus portion of the levator ani group.
• C. The iliococcygeus muscle.
• D. The transverse abdominis.

Answer: (B)

Strengthening the pelvic floor to prevent leakage during activities that raise abdominal pressure relies on the pubococcygeus portion of the levator ani because this anterior component directly surrounds and supports the urethra. By lifting and tightening this part, pelvic floor training increases urethral support and the ability to compress the urethra when you cough, sneeze, or strain, which is what stress incontinence hinges on. The iliococcygeus provides posterior support but doesn’t offer the same direct urethral reinforcement. The external anal sphincter mainly governs fecal continence and isn’t the primary contributor to urinary continence in standard pelvic floor training. The transverse abdominis is a core stabilizer that can aid overall core function, but it isn’t the pelvic floor muscle group targeted for improving urethral closure.