Paulsen C A, Berman N G, Wang C
Department of Medicine, University of Washington, Seattle, USA.
Fertil Steril. 1996 May;65(5):1015-20.
To determine whether there has been a decline in semen quality in a group of healthy men during the past 21 years.
Retrospective analysis of the relationship between time and changes in semen parameters over 21 years using regression analysis.
A tertiary university center.
Five hundred ten healthy, normal men who donated multiple semen samples as participants in clinical studies between 1972 and 1993.
Sperm concentration, semen volume, total numbers of sperm per ejaculate, and percent spermatozoa with normal morphology.
There was no decrease in sperm concentration, semen volume, total number of sperm per ejaculate, and percent normal sperm morphology in 510 healthy men studied between 1972 and 1993.
We conclude that in this population of healthy young men there has not been any decline in semen quality in the past 21 years.
确定在过去21年中，一组健康男性的精液质量是否有所下降。
采用回归分析对21年间时间与精液参数变化之间的关系进行回顾性分析。
一所三级大学中心。
1972年至1993年间作为临床研究参与者捐赠多个精液样本的510名健康、正常男性。
精子浓度、精液量、每次射精的精子总数以及正常形态精子的百分比。
在1972年至1993年间研究的510名健康男性中，精子浓度、精液量、每次射精的精子总数以及正常精子形态的百分比均未下降。
我们得出结论，在这群健康的年轻男性中，过去21年精液质量没有任何下降。
