Ikegaya Hiroshi, Suzuki Motofumi, Kondou Hiroki, Kawai Taketo, Sato Yusuke, Kitamura Tadaichi, Kume Haruki
Department of Forensics Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
Department of Urology, Tokyo Metropolitan Bokutoh Hospital, 4-23-15 Kotobashi, Sumida-ku, Tokyo, 130-8575, Japan.
Basic Clin Androl. 2021 Feb 4;31(1):3. doi: 10.1186/s12610-021-00121-z.
In a previous report, we investigated whether the size of male genitalia similarly exposed to serum testosterone during aging could change with age and found that penile length almost stopped increasing during adolescence and decreased in older males. In this report, to determine what factors other than age are related to penile length, we performed a multivariate analysis of the relationships between stretched penile length (SPL) and other measurements of genital organs, nose size, height and body weight in 126 adults in their 30s-50s.
The most highly correlated factor with SPL was flaccid penile length (r = 0.565, P < 0.0001). The next highest correlation was nose size (r = 0.564, P < 0.0001). The penile stretched rate correlated with FPL (r = - 0.690, P < 0.0001) but not with SPL or penile circumference.
The fact that nose size is related to SPL indicates that penile length may not be determined by age, height or body weight but has already been determined before birth.
在之前的一份报告中，我们研究了在衰老过程中同样暴露于血清睾酮的男性生殖器大小是否会随年龄变化，结果发现阴茎长度在青春期几乎停止增长，而在老年男性中会缩短。在本报告中，为了确定除年龄外还有哪些因素与阴茎长度相关，我们对126名30多岁至50多岁的成年人的拉伸阴茎长度（SPL）与生殖器官的其他测量值、鼻子大小、身高和体重之间的关系进行了多变量分析。
与SPL相关性最高的因素是疲软阴茎长度（r = 0.565，P < 0.0001）。其次相关性最高的是鼻子大小（r = 0.564，P < 0.0001）。阴茎拉伸率与疲软阴茎长度相关（r = -0.690，P < 0.0001），但与SPL或阴茎周长无关。
鼻子大小与SPL相关这一事实表明，阴茎长度可能不是由年龄、身高或体重决定的，而是在出生前就已确定。
