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Exercise and male factor infertility

J C Arce1, M J De Souza

  • 1Department of Obstetrics and Gynecology, University of Connecticut Health Center, Farmington.

Sports Medicine (Auckland, N.Z.)
|March 1, 1993
PubMed
Summary
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Endurance training may cause subclinical changes in male athletes' reproductive hormones and semen quality. However, current evidence does not indicate that endurance exercise causes male infertility.

Area of Science:

  • Andrology
  • Reproductive Endocrinology
  • Sports Medicine

Background:

  • Male factor infertility is a complex condition with idiopathic components.
  • Exercise training, particularly endurance running, has been investigated for its effects on male reproductive health.
  • Subclinical changes in reproductive hormones and semen profiles have been observed in some endurance-trained athletes.

Purpose of the Study:

  • To review the effects of endurance training on male reproductive hormones and semen parameters.
  • To assess the potential impact of these changes on male fertility capacity.
  • To identify gaps in current research regarding endurance training and male infertility.

Main Methods:

  • Review of existing literature on andrology, exercise physiology, and reproductive endocrinology.

Related Experiment Videos

  • Analysis of studies examining hormone profiles (testosterone, luteinizing hormone) in endurance athletes.
  • Examination of research on semen parameters (sperm count, motility, morphology) in male athletes.

    • Main Results:

    • A subset of endurance-trained men, especially runners, exhibit subclinical alterations in reproductive hormones, including reduced testosterone and modified luteinizing hormone release.
    • Semen analysis in some athletes shows non-specific changes such as lower normal sperm counts, decreased motility, and morphological abnormalities.
    • No definitive evidence currently links endurance training directly to male infertility.

    Conclusions:

    • Endurance training can induce subclinical hormonal and semen alterations in a subset of male athletes.
    • These modifications may potentially impact fertility, warranting further investigation.
    • Future research should focus on the clinical significance of these changes for fertility in endurance athletes.