Suijker Chris A, Georgiadis Janniko R, Meijer Boaz
University of Groningen, University Medical Center Groningen, Department of Urology, Groningen, The Netherlands.
University of Groningen, University Medical Center Groningen, Department of Biomedical Sciences of Cells & Systems, Section Anatomy & Medical Physiology, Groningen, The Netherlands.
Int J Impot Res. 2025 Jun 30. doi: 10.1038/s41443-025-01122-6.
Penile detumescence is crucial for erectile physiology and may play a role in erectile dysfunction and priapism. However, few studies focus on the process of penile detumescence. This pilot study explores the feasibility of measuring the perceived duration of post-ejaculatory penile detumescence in real-life conditions in a convenience sample. Voluntary participants could access a survey between November 2020 and February 2021, with measurement instructions shared by the researchers across several online social networks. Participants measured penile detumescence, starting a stopwatch at ejaculation and recording two time points: onset of flaccidity and complete flaccidity. The survey collected basic demographics for description purposes. At survey closure, full responses of 83 (mean age 26.9 ± 8.9 years) participants were analyzed. The mean duration to onset of flaccidity was 57.9 ± 35.5 s, and to complete flaccidity was 180.7 ± 83.5 s, both following an approximately normal distribution. These durations were significantly correlated with each other (r = 0.47, p < 0.001), but not with any other variables. The results suggest that quantifying penile detumescence in real-life conditions is feasible. Future studies with a more robust design should verify these measurements and explore factors influencing detumescence duration in both real-life conditions and research settings.
阴茎疲软对于勃起生理至关重要，可能在勃起功能障碍和阴茎异常勃起中发挥作用。然而，很少有研究关注阴茎疲软的过程。这项初步研究探讨了在便利样本的现实生活条件下测量射精后阴茎疲软感知持续时间的可行性。自愿参与者可以在2020年11月至2021年2月期间访问一项调查，研究人员通过几个在线社交网络分享了测量说明。参与者测量阴茎疲软情况，在射精时启动秒表并记录两个时间点：疲软开始和完全疲软。该调查收集了用于描述目的的基本人口统计学信息。在调查结束时，对83名（平均年龄26.9±8.9岁）参与者的完整回复进行了分析。疲软开始的平均持续时间为57.9±35.5秒，完全疲软的平均持续时间为180.7±83.5秒，两者均呈近似正态分布。这些持续时间彼此显著相关（r = 0.47，p < 0.001），但与任何其他变量均无相关性。结果表明，在现实生活条件下量化阴茎疲软是可行的。未来设计更严谨的研究应验证这些测量结果，并探索在现实生活条件和研究环境中影响疲软持续时间的因素。
