(122) Electromyographic Evaluation of the Pelvic Muscles Activity in Men With Premature Ejaculation: A Cross-Sectional Study

Introduction Premature ejaculation is the most common male sexual dysfunction. The superficial pelvic floor muscles, ischiocavernosus and bulbospongiosus, play a fundamental role in both erection and ejaculatory control. The bulbospongiosus muscle contributes to ejaculation by generating rhythmic contractions that propel seminal fluid through the urethra. These coordinated muscular actions are essential for maintaining erectile function and regulating ejaculatory dynamics. Studies suggest that pelvic floor muscle therapy may help improve ejaculatory control by enhancing voluntary muscle relaxation, although the precise mechanisms remain unclear. Furthermore, there are no standardized parameters for evaluating the male pelvic floor, and there is a lack of knowledge about the characteristics of the pelvic floor in men with sexual dysfunction. Objective The objective is to evaluate the pelvic floor muscles activity in men with premature ejaculation. Methods This was a cross-sectional study conducted at a single public healthcare center. Physical examinations were performed on men with a clinical diagnosis of premature ejaculation. During the assessment, age, weight, height, abdominal circumference, and waist circumference were recorded. Pelvic floor muscle functionality was evaluated using surface electromyography (μV), with electrodes positioned over the bulbocavernosus muscles. The assessment protocol included tasks such as maximal voluntary contractions, endurance tests, fast contraction activation, and the cough maneuver. All statistical analyses were performed using RStudio. Results In total, 18 men with premature ejaculation participated in the study. The mean age of 52.7 years (±13.0), mean weight of 83.5 kg (±13.6), and mean height of 1.70 m (±0.05). Abdominal circumference averaged 102.2 cm (±12.7), and waist circumference was 93.4 cm (±23.3). Pelvic floor muscle performance showed a mean maximal contraction of 116.39 μV (±59.87), resting EMG activity of 16.14 μV (±8.67), and endurance of 99.43 μV (±50.86) with the mean endurance hold time was 4.56 seconds (±2.43). The mean value for fast activation during maximal voluntary contraction was 62.68 μV (±38.16). All participants successfully performed the elevation. The maximal activation cough maneuver was 92.58 μV (±49.20). These findings provide insight into the neuromuscular profile of the pelvic floor in men with premature ejaculation and may inform future therapeutic strategies targeting ejaculatory control with pelvic floor muscle training. Conclusions In this pilot study, men with premature ejaculation demonstrated preserved function of the pelvic floor muscles, with adequate maximal voluntary contraction capacity in both endurance and fast fibers. Disclosure No