Exercise-Induced Changes in Gonadotropin Secretion Patterns: A Possible Mechanism for Menstrual Cycle Disturbances
Low-frequency changes, which represent changes in the mean daily plasma hormone concentration during the menstrual cycle;
High-frequency changes, superimposed on the low-frequency changes. To date, it is well recognized that many hormones, including luteinizing hormone (LH), follicle stimulating hormone (FSH), estradiol (E2, prolactin (PRL), and progesterone (P) are secreted in a characteristic pulsatile pattern (YEN et al. 1972a and b; SANTEN and BARDIN 1973; KORENMAN and SHERMAN 1973; LENTON et al. 1978, 1979; BACKSTROM et al. 1982);
Changes of intermediate frequency, called "diurnal" or "circadian" because they recur every 24 h; in women, diurnal changes are found for LH, FSH, E2, and PRL (BACKSTROM et al. 1982).
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- Brisson GR, De Caruifel DR, Brault B, Volle MA, Audet A, Desharnais M, Lefrançois C (1981) Circulating delta-4-androgen levels and bicycle exercise in trained young men. In: Poortsmans J, Nisset G (eds) Biochemistry of Exercise vol IVb. University Park Press, Baltimore.Google Scholar
- Keizer HA (1983) Hormonal responses in women as a function of physical exercise and training. Thesis, Maastricht.Google Scholar
- Santen RJ, Bardin CW (1973) Episodic luteinizing hormone secretion in man. Pulse analyses, clinical interpretation, physiological mechanism. J Clin Invest 36:55–63.Google Scholar
- Shaw RW, Butt WR, London DR, Marshall JC (1974) Variation in response to synthetic luteinizing hormone-releasing hormone (LH-RH) at different phases of the same menstrual cycle in normal women. J Gynecol Obstet Biol Reprod (Paris) 81:632–639.Google Scholar
- Trager L (1977) Steroid Hormone. Springer, Berlin Heidelberg New York.Google Scholar