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Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics

Variation in the ejaculatory abstinence period suggested by different guidance bodies have resulted in a growing concern among researchers and clinicians over what the precise period of ejaculatory abstinence ought to be for an optimal semen sample. Several studies have thus been undertaken to exami...

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Autores principales: Ayad, Bashir M, Van der Horst, Gerhard, S Du Plessis, Stefan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royan Institute 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5641453/
https://www.ncbi.nlm.nih.gov/pubmed/29043697
http://dx.doi.org/10.22074/ijfs.2018.5192
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author Ayad, Bashir M
Van der Horst, Gerhard
S Du Plessis, Stefan
author_facet Ayad, Bashir M
Van der Horst, Gerhard
S Du Plessis, Stefan
author_sort Ayad, Bashir M
collection PubMed
description Variation in the ejaculatory abstinence period suggested by different guidance bodies have resulted in a growing concern among researchers and clinicians over what the precise period of ejaculatory abstinence ought to be for an optimal semen sample. Several studies have thus been undertaken to examine the association between the length of sexual abstinence and semen characteristics. Not all studies, however, have arrived at the same conclusions. This study aims to review all existing literature published during the past few decades pertaining to the influence of ejaculatory abstinence on semen quality. For the purpose of this systematic review, all data related to sexual abstinence duration and seminal parameters were re-analysed to homogenize the current data. Thorough PubMed, MEDLINE and Google Scholar, a literature search was conducted using the keywords “sexual abstinence”, “ejaculatory abstinence”, “semen”, “spermatozoa”, “semen analysis”, “sperm parameters”, “motility”, “reactive oxygen species (ROS)” and “DNA fragmentation”. After carefully reviewing all the literature, 30 relevant papers, both written in English and published between January 1979 and December 2016, were included in this review. The weight of the evidence suggests that the decline in semen volume and sperm concentration with shorter abstinence periods is accompanied by a substantial improvement in sperm motility characteristics, especially progressive motility and velocity. Nevertheless, available data are insufficient to support definitive conclusions regarding the influence of the ejaculatory abstinence period on advanced semen parameters (ROS, DNA fragmentation and seminal plasma antioxidant capacity) and pregnancy rates. In conclusion, taking all data into account, shortening of the abstinence period may be beneficial to sperm quality. Furthermore, we recommend that the current guidelines regarding the prescribed abstinence period should be revisited.
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spelling pubmed-56414532018-01-01 Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics Ayad, Bashir M Van der Horst, Gerhard S Du Plessis, Stefan Int J Fertil Steril Systematic Review Variation in the ejaculatory abstinence period suggested by different guidance bodies have resulted in a growing concern among researchers and clinicians over what the precise period of ejaculatory abstinence ought to be for an optimal semen sample. Several studies have thus been undertaken to examine the association between the length of sexual abstinence and semen characteristics. Not all studies, however, have arrived at the same conclusions. This study aims to review all existing literature published during the past few decades pertaining to the influence of ejaculatory abstinence on semen quality. For the purpose of this systematic review, all data related to sexual abstinence duration and seminal parameters were re-analysed to homogenize the current data. Thorough PubMed, MEDLINE and Google Scholar, a literature search was conducted using the keywords “sexual abstinence”, “ejaculatory abstinence”, “semen”, “spermatozoa”, “semen analysis”, “sperm parameters”, “motility”, “reactive oxygen species (ROS)” and “DNA fragmentation”. After carefully reviewing all the literature, 30 relevant papers, both written in English and published between January 1979 and December 2016, were included in this review. The weight of the evidence suggests that the decline in semen volume and sperm concentration with shorter abstinence periods is accompanied by a substantial improvement in sperm motility characteristics, especially progressive motility and velocity. Nevertheless, available data are insufficient to support definitive conclusions regarding the influence of the ejaculatory abstinence period on advanced semen parameters (ROS, DNA fragmentation and seminal plasma antioxidant capacity) and pregnancy rates. In conclusion, taking all data into account, shortening of the abstinence period may be beneficial to sperm quality. Furthermore, we recommend that the current guidelines regarding the prescribed abstinence period should be revisited. Royan Institute 2018 2017-10-14 /pmc/articles/PMC5641453/ /pubmed/29043697 http://dx.doi.org/10.22074/ijfs.2018.5192 Text en Any use, distribution, reproduction or abstract of this publication in any medium, with the exception of commercial purposes, is permitted provided the original work is properly cited http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Systematic Review
Ayad, Bashir M
Van der Horst, Gerhard
S Du Plessis, Stefan
Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title_full Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title_fullStr Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title_full_unstemmed Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title_short Revisiting The Relationship between The Ejaculatory Abstinence Period and Semen Characteristics
title_sort revisiting the relationship between the ejaculatory abstinence period and semen characteristics
topic Systematic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5641453/
https://www.ncbi.nlm.nih.gov/pubmed/29043697
http://dx.doi.org/10.22074/ijfs.2018.5192
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