@Article{Sugiyam2008,
journal="Archives of Medical Science",
issn="1734-1922",
volume="4",
number="4",
year="2008",
title="Clinical researchImprovement of sperm motility by short-interval sequential ejaculation in oligoasthenozoospermic patients",
abstract="  Introduction:  The aim of this study was to evaluate the effect of a consecutive second ejaculate, i.e, to determine if it contains an equal, or even higher, number of motile sperm, and whether it can improve the fertilization rate in IVF-ET treatment.    Material and methods:  From July 1996 through April 2007, 32 cycles in 22 couples, who had previously exhibited oligoasthenozoospermia, were recruited in this study. The first ejaculate was obtained after 3-5 days following sexual ejaculate abstinence. The second ejaculate was obtained 30-60 min after the first one. Several parameters concerning sperm quality and fertilization rate in IVF were compared between the first and second ejaculation.   Results:  The mean duration between the first and second ejaculation was 34.2 min (mean \&#177; SEM). The second ejaculate showed a significant reduction in the volume of ejaculate. The sperm motility (35.2\&#177;13.3) and motile sperm concentration (5.4\&#177;7.3) of the second ejaculate were significantly higher than those of the first (24.3\&#177;13.2 and 2.2\&#177;1.8, respectively; P<0.05). The fertilization rate of sperm from the second ejaculate (53.3%) was significantly higher than that from the first one (28.9%, P<0.05), but cleavage rates and embryo scores were similar.    Conclusions:  Therefore, this sequential ejaculation might be useful for treatment of male infertility at these hospital and clinics.",
author="Sugiyam, Rikikazu
and A. Al-Salem, Jawaher
and Nishi, Yayoi
and Sugiyama, Rie
and Shirai, Asako
and Inoue, Masato
and Irahara, Minoru",
pages="438--442",
url="https://www.termedia.pl/Clinical-research-Improvement-of-sperm-motility-by-short-interval-sequential-ejaculation-in-oligoasthenozoospermic-patients,19,11759,1,1.html"
}