Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA.
Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.
Int J Impot Res. 2019 Sep;31(5):328-333. doi: 10.1038/s41443-018-0107-6. Epub 2019 Jan 15.
As lifelong premature ejaculation (PE) and subjective PE are two different PE subtypes, the measurement of their characteristic features requires different objective measures. In this article, we address the differences between lifelong PE and subjective PE, in terms of the extent of variation of sexual performance and propose a new objective measure for research of subjective PE. By considering lifelong PE as a mainly "male" sex disorder and subjective PE as a mainly "man" sex disorder, we show that stopwatch-mediated intravaginal ejaculation latency time (IELT) measurement is most adequate for research of lifelong PE, but inadequate for research of subjective PE. Subjective PE needs another objective measure to capture its key characteristics. Arguments are provided to show that the characteristics of subjective PE are different from the key features of lifelong PE. The core issue in lifelong PE is the very short IELT with a very small variation in sexual performance. Subjective PE is characterized by a higher variation of sexual performance. Stopwatch-mediated IELT measurement is essential in case of small variation of sexual performance. In contrast, measurement of various parameters of penile intravaginal thrusting is suggested to be more appropriate in case of high variation of sexual performance observed in subjective PE. In conclusion, research of lifelong PE should be performed by stopwatch measurement of the IELT whereas research of subjective PE should be performed by movement tracker devices, designed to be bound to the males body and/or inserted into the women's vagina with robust software to measure intravaginal thrusting variation performance. Future studies are warranted to provide scientific data to support this hypothesis.
作为终身性早泄（PE）和主观性 PE 是两种不同的 PE 亚型，其特征的测量需要不同的客观测量方法。在本文中，我们将讨论终身性 PE 和主观性 PE 在性功能变化程度上的差异，并提出一种新的客观测量方法来研究主观性 PE。通过将终身性 PE 视为主要的“男性”性功能障碍，将主观性 PE 视为主要的“男性”性功能障碍，我们表明，秒表介导的阴道内射精潜伏期（IELT）测量对于研究终身性 PE 是最合适的，但对于研究主观性 PE 则不够充分。主观性 PE 需要另一种客观测量方法来捕捉其关键特征。本文提供了一些论据，表明主观性 PE 的特征与终身性 PE 的关键特征不同。终身性 PE 的核心问题是 IELT 非常短，性功能变化非常小。主观性 PE 的特点是性功能变化较大。在性功能变化较小时，秒表介导的 IELT 测量至关重要。相反，在主观性 PE 中观察到的性功能变化较大时，建议测量各种阴茎阴道内推力参数。总之，研究终身性 PE 应通过秒表测量 IELT，而研究主观性 PE 应通过运动跟踪器设备进行，这些设备设计用于绑定男性身体或插入女性阴道，并配备强大的软件来测量阴道内推力变化性能。需要进一步的研究来提供科学数据支持这一假设。
