Time-to-Ejaculation and the Quality of Semen Produced by Masturbation at a Clinic.
(2008) In Urology 71(5). p.883-888- Abstract
- OBJECTIVES: To investigate the association between the length of time-to-ejaculation and semen parameters. METHODS: Ejaculates from 142 men under infertility assessment were analyzed according to the World Health Organization guidelines. Seminal neutral alpha-glucosidase (NAG), prostate-specific antigen (PSA), zinc, and fructose were also measured. Three groups according to the length of the time-to-ejaculation were defined: G(<10) (<10 minutes), G(10-15) (10 to 15 minutes), and G(>15) (greater than 15 minutes). RESULTS: Time to ejaculation showed negative significant correlation with sperm concentration (rho = -0.20, P = 0.02), total sperm count (rho = -0.20, P = 0.04), NAG (rho = -0.20, P = 0.01), and fructose (rho = -0.30, P =... (More)
- OBJECTIVES: To investigate the association between the length of time-to-ejaculation and semen parameters. METHODS: Ejaculates from 142 men under infertility assessment were analyzed according to the World Health Organization guidelines. Seminal neutral alpha-glucosidase (NAG), prostate-specific antigen (PSA), zinc, and fructose were also measured. Three groups according to the length of the time-to-ejaculation were defined: G(<10) (<10 minutes), G(10-15) (10 to 15 minutes), and G(>15) (greater than 15 minutes). RESULTS: Time to ejaculation showed negative significant correlation with sperm concentration (rho = -0.20, P = 0.02), total sperm count (rho = -0.20, P = 0.04), NAG (rho = -0.20, P = 0.01), and fructose (rho = -0.30, P = 0.02), respectively. No significant correlations existed among the time-to-ejaculation and age, sexual abstinence, semen volume, sperm motility, PSA, and zinc. There were negative significant associations among time-to-ejaculation and sperm concentration (beta = -3.0; P = 0.004), total sperm count (beta = -10; P = 0.02), total count of progressive motility (beta = -7.0; P = 0.02), and fructose (beta = -0.30; P = 0.02), respectively. No significant associations existed among the time-to-ejaculation and semen volume, motility grades, NAG, PSA, and zinc. G(<10) was characterized by higher sperm concentration, total sperm count, and total count of progressive motility compared with G(10-15) (mean difference = 33 x 10(6)/mL; P = 0.01), (mean difference = 96 x 10(6)/ejaculate; P = 0.50), (mean difference = 77 x 10(6)/ejaculate; P = 0.02), respectively, and G(>15) (mean difference = 50 x 10(6)/mL; P = 0.01), (mean difference = 176 x 10(6)/ejaculate; P = 0.02), (mean difference = 110 x 10(6)/ejaculate; P = 0.03), respectively. Fructose was significantly higher in G(<10) compared with G(>15) (mean difference = 5.0 mmol/L; P = 0.03). CONCLUSIONS: The time-to-ejaculation length was associated with semen parameters. These results might reflect the negative effect of acute stress during semen collection via masturbation at a clinic on semen parameters. (Less)
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https://lup.lub.lu.se/record/1147978
- author
- Elzanaty, Saad LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Urology
- volume
- 71
- issue
- 5
- pages
- 883 - 888
- publisher
- Elsevier
- external identifiers
-
- wos:000255992000041
- pmid:18374400
- scopus:42749083411
- pmid:18374400
- ISSN
- 1527-9995
- DOI
- 10.1016/j.urology.2007.12.009
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Pediatrics/Urology/Gynecology/Endocrinology (013240400)
- id
- 211e719f-492a-499c-b4d4-86afc2963e51 (old id 1147978)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/18374400?dopt=Abstract
- date added to LUP
- 2016-04-04 08:10:25
- date last changed
- 2022-01-29 03:05:17
@article{211e719f-492a-499c-b4d4-86afc2963e51,
abstract = {{OBJECTIVES: To investigate the association between the length of time-to-ejaculation and semen parameters. METHODS: Ejaculates from 142 men under infertility assessment were analyzed according to the World Health Organization guidelines. Seminal neutral alpha-glucosidase (NAG), prostate-specific antigen (PSA), zinc, and fructose were also measured. Three groups according to the length of the time-to-ejaculation were defined: G(<10) (<10 minutes), G(10-15) (10 to 15 minutes), and G(>15) (greater than 15 minutes). RESULTS: Time to ejaculation showed negative significant correlation with sperm concentration (rho = -0.20, P = 0.02), total sperm count (rho = -0.20, P = 0.04), NAG (rho = -0.20, P = 0.01), and fructose (rho = -0.30, P = 0.02), respectively. No significant correlations existed among the time-to-ejaculation and age, sexual abstinence, semen volume, sperm motility, PSA, and zinc. There were negative significant associations among time-to-ejaculation and sperm concentration (beta = -3.0; P = 0.004), total sperm count (beta = -10; P = 0.02), total count of progressive motility (beta = -7.0; P = 0.02), and fructose (beta = -0.30; P = 0.02), respectively. No significant associations existed among the time-to-ejaculation and semen volume, motility grades, NAG, PSA, and zinc. G(<10) was characterized by higher sperm concentration, total sperm count, and total count of progressive motility compared with G(10-15) (mean difference = 33 x 10(6)/mL; P = 0.01), (mean difference = 96 x 10(6)/ejaculate; P = 0.50), (mean difference = 77 x 10(6)/ejaculate; P = 0.02), respectively, and G(>15) (mean difference = 50 x 10(6)/mL; P = 0.01), (mean difference = 176 x 10(6)/ejaculate; P = 0.02), (mean difference = 110 x 10(6)/ejaculate; P = 0.03), respectively. Fructose was significantly higher in G(<10) compared with G(>15) (mean difference = 5.0 mmol/L; P = 0.03). CONCLUSIONS: The time-to-ejaculation length was associated with semen parameters. These results might reflect the negative effect of acute stress during semen collection via masturbation at a clinic on semen parameters.}},
author = {{Elzanaty, Saad}},
issn = {{1527-9995}},
language = {{eng}},
number = {{5}},
pages = {{883--888}},
publisher = {{Elsevier}},
series = {{Urology}},
title = {{Time-to-Ejaculation and the Quality of Semen Produced by Masturbation at a Clinic.}},
url = {{http://dx.doi.org/10.1016/j.urology.2007.12.009}},
doi = {{10.1016/j.urology.2007.12.009}},
volume = {{71}},
year = {{2008}},
}