Analysis of measured values of ejaculation time in healthy males.

Although it has been deemed irrelevant to address ejaculation time in terms of mean values, our study was designed as a preliminary step in determining the normal range of ejaculation time (from the start of stimulation of the erect penis to ejaculation) as a criterion for assessing the degree of ejaculation disorder. Ejaculation experiments were performed with informed and consenting healthy volunteers about 20 years of age, using identical manual stimulation by the same woman, and ejaculation time was measured. The mean +/- standard deviation for the ejaculation time was 156.5 +/- 80.7 seconds, which was shown to be erection time dependent.