Gonadotropin decrease induced by prolonged exercise at about 55of the VO2max in different phases of the mentrual cycle
Gespeichert in:
| Deutscher übersetzter Titel: | Abfall der Gonadotropinkonzentration durch Ausdauerbelastung bei ungefaehr 55der VO2max in verschiedenen Menstruationsphasen |
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| Autor: | Mastrogiacomo, I.; Toderini, D.; Bonanni, G.; Bordin, D. |
| Erschienen in: | International journal of sports medicine |
| Veröffentlicht: | 11 (1990), 3, S. 198-203, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Englisch |
| ISSN: | 0172-4622, 1439-3964 |
| DOI: | 10.1055/s-2007-1024791 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU199007044330 |
| Quelle: | BISp |
Abstract
In order to evaluate the influence of physical exercise on the hypothalamic-pituitary-ovarian axis, we studied ten women in the early follicular phase (EFP), twelve in the late follicular phase (LEP) and nine in the luteal phase (LP). The test consisted of a 90-minute physical exercise on a motor driven treadmill at 55-60 of VO2max. Blood samples were taken before, during and after the test. Prolactin and cortisol did not increase in any phase. Estradiol showed a significant increase in LFP and in LP but not in EFP. Progesterone levels increased significantly only in LP. Luteinizing hormone (LH) levels decreased significantly in all phases, while follicle stimulating hormone (FSH) levels decreased only in LFP. Our exercise protocol (prolonged, continous and moderate) was able to cause a decrease in gonadotropin levels, and this phenomenon is not due to changes in the other tested hormones. Verf.-Referat