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Related Experiment Videos

Effect of repeated semen ejaculation on sperm quality.

S N Nnatu1, O F Giwa-Osagie, E E Essien

  • 1Department of Obstetrics and Gynaecology, College of Medicine, Lagos, Nigeria.

Clinical and Experimental Obstetrics & Gynecology
|January 1, 1991
PubMed
Summary

Repeated semen ejaculation every other day significantly reduces sperm density and volume. However, these changes do not impair male fertility potential in men with normal initial sperm characteristics.

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Area of Science:

  • Reproductive Biology
  • Andrology
  • Human Fertility Studies

Background:

  • Semen quality is a critical factor in male reproductive health.
  • Understanding the impact of ejaculation frequency on semen parameters is essential for fertility assessment.

Purpose of the Study:

  • To investigate the effects of repeated semen ejaculation on alternate days on sperm quality parameters.
  • To determine if changes in semen density, volume, motility, and morphology impact potential fertility.

Main Methods:

  • Semen samples were collected from 21 medical students via masturbation over a five-day period.
  • Semen analysis included assessment of sperm density, volume, motility, and morphology.
  • Statistical analysis was performed to identify significant differences between samples collected on days 1, 3, and 5.

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Main Results:

  • A statistically significant decrease in semen density was observed between the first and third samples.
  • Semen volume also showed a statistically significant reduction between the first and third, and third and fifth samples.
  • No significant differences were found in sperm motility or morphology across the sampling days.

Conclusions:

  • Repeated ejaculation on alternate days leads to significant reductions in semen density and volume.
  • Despite these reductions, the overall impact does not compromise the fertility potential of men with initially normal semen characteristics.