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Related Experiment Videos

Cyclic ovarian function in recreational athletes.

A Broocks1, K M Pirke, U Schweiger

  • 1Max-Planck-Institut für Psychiatrie, Ludwig-Maximilian-Universität, Munich, Federal Republic of Germany.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|May 1, 1990
PubMed
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Recreational running may disrupt female athletes' ovarian function, potentially due to inadequate nutrition. This study monitored hormone levels and found altered menstrual cycles in some runners.

Area of Science:

  • Reproductive endocrinology
  • Sports medicine
  • Exercise physiology

Background:

  • Female athletes often experience menstrual irregularities.
  • Ovarian function is crucial for reproductive health and requires adequate energy availability.

Purpose of the Study:

  • To investigate the impact of recreational running on ovarian function in female athletes.
  • To compare hormonal profiles and menstrual cycle characteristics between athletes and a control group.

Main Methods:

  • Monitoring ovarian function through daily hormone measurements (estradiol and progesterone) and serial ultrasound.
  • Assessing maximal aerobic capacity and caloric intake in athletes and sedentary controls.

Main Results:

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  • Fewer athletes met criteria for normal estradiol and progesterone maxima and luteal phase length compared to controls.
  • Disturbed follicular development and luteal phase disturbance were observed in some athletes.
  • Athletes, regardless of menstrual function, exhibited lower estradiol levels; those with disturbed function also had lower progesterone levels.
  • Maximal aerobic capacity was similar between athlete groups, and caloric intake did not increase as expected.

    • Conclusions:

    • Recreational running is associated with altered ovarian function in female athletes.
    • Inadequate nutritional adaptation may be a contributing factor to these reproductive disturbances.
    • Further research is needed to elucidate the mechanisms linking exercise, nutrition, and ovarian function.