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Related Experiment Videos

Long-term variations of seminal parameters.

W Krause

    Andrologia
    |March 1, 1984
    PubMed
    Summary

    Semen analysis in male outpatients showed no age-related decline. However, sperm count and abnormal sperm rates were higher in the earlier period (1975-1978) compared to the later period (1979-1982).

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    Area of Science:

    • Andrology
    • Reproductive Medicine
    • Semen Analysis

    Background:

    • Longitudinal studies on male reproductive health are crucial for understanding age-related changes and environmental influences.
    • Semen quality can fluctuate over time, necessitating repeated assessments for accurate evaluation.

    Purpose of the Study:

    • To investigate changes in seminal parameters in male outpatients over a four-year interval.
    • To assess the impact of age and time on sperm count and sperm morphology.

    Main Methods:

    • Retrospective analysis of semen analyses from 57 outpatients.
    • Comparison of seminal parameters (sperm count, abnormal sperm rate) between two distinct time periods (1975-1978 and 1979-1982).

    Main Results:

    • No significant variations in seminal parameters were associated with increasing patient age.
    • Sperm count and the rate of abnormal sperm were significantly higher during the 1975-1978 period compared to the 1979-1982 period.
    • Individual patients exhibited considerable variability in sperm count between analyses, despite stable mean values.

    Conclusions:

    • Age does not appear to be a significant factor influencing seminal parameters in this outpatient cohort over a four-year span.
    • A temporal decline in semen quality, specifically in sperm count and an increase in abnormal sperm, was observed between the two study periods.
    • Significant inter-individual variation in sperm count highlights the need for multiple semen analyses for comprehensive fertility assessment.

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