Abstract
ABSTRACTBACKGROUND: Perineal numbness and erectile dysfunction are emerging as health concerns among bicyclists. Three studies indicate that between 7% and 21% of male cyclists experience genital area numbness after prolonged riding.OBJECTIVE: To evaluate the effect of an experimental seat design on perineal numbness.DESIGN: Fifteen experienced male cyclists exercised for 1 hour on a stationary spin cycle using either an experimental or standard bicycle seat. Several days later they repeated the trial using the other seat type. Before and after each 1-hour exercise session, perineal sensation was tested using the Weinstein Enhanced Sensory Testing (WEST)-hand esthesiometer. Cyclists were also asked to report their perception of numbness after each exercise bout.RESULTS: Cyclists reported more numbness with the standard seat than with the experimental seat (79% vs 14%; P=0.009). Similarly, sensory testing at all perineal sites yielded greater hypoesthesia with the standard seat than with the experimental seat (P=0.05). This difference was most marked at the dorsal penis (P=0.04).CONCLUSION: The experimental bicycle seat produced significantly less subjective and objective numbness than the standard cycle seat in 1 hour of stationary cycling. Bicycle seat design and innovation may decrease or eliminate perineal numbness.
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