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Ovarian hormonal responses to exercise.

J E Jurkowski, N L Jones, C Walker

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |January 1, 1978
    PubMed
    Summary
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    Exercise impacts key reproductive hormones like estradiol and progesterone, particularly during the luteal phase. Follicle-stimulating hormone (FSH) also increases with exercise, but luteinizing hormone (LH) remains unaffected.

    Area of Science:

    • Reproductive Endocrinology
    • Exercise Physiology
    • Hormonal Regulation

    Background:

    • Understanding the impact of physical activity on the female reproductive system is crucial.
    • Hormonal fluctuations throughout the menstrual cycle influence physiological responses.
    • The interplay between exercise intensity and hormonal changes requires further investigation.

    Purpose of the Study:

    • To investigate the effects of varying exercise intensities on key reproductive hormones.
    • To examine hormonal responses during different phases of the menstrual cycle.
    • To determine if exercise acts as a physiological stimulus for hormonal changes.

    Main Methods:

    • Nine healthy females participated in the study.
    • Hormone levels (estradiol, progesterone, FSH, LH) were measured during rest and exercise.

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  • Exercise protocols included light, heavy, and exhaustive intensities.
  • Data were collected during the midfollicular and midluteal phases of the menstrual cycle.

    • Main Results:

    • Estradiol and progesterone increased with exercise at all intensities in the luteal phase.
    • Estradiol also increased at exhaustion in the follicular phase.
    • Follicle-stimulating hormone (FSH) increased during follicular phase exercise.
    • Luteinizing hormone (LH) levels remained unchanged across all conditions.
    • Hormonal elevations were more pronounced in the luteal phase for steroids and follicular phase for FSH.

    Conclusions:

    • Exercise is a physiological stimulus for increased estradiol, progesterone, and FSH.
    • Exercise does not appear to affect luteinizing hormone (LH) levels.
    • The intensity of exercise correlates with estradiol and progesterone increases, independent of pituitary control.