title: [LH episodes in high performance sports].
abstract: For the elucidation of hypothalamic factors, which predominantly cause exercise-amenorrhea 10 untrained and 6 trained volunteers were experimentally tested during 6 hours of rest (R) and 2 hours long distance run (E). The exercise exerted several physical and metabolic demands, leading to increment of LH pulse frequently mainly in trained women (interpulse-interval IPI, R: 104 +/- 50, E: 78.8 +/- 33), due to unaltered beta-endorphin (R: 6.4 +/- 2, E: 6.5 +/- 1.5) and augmented norepinephrine (R: 462 +/- 275, E: 1267 +/- 773 pg/ml). In untrained subjects LH pulses decreased in frequency, as a consequence of increased beta-E and NE (R: 6 +/- 3, E: 12.2 +/- 7.4 pg/ml) (R: 432 +/- 208, E: 947 +/- 473).
authors.affiliation: Universitäts-Frauenklinik Ulm.
authors.forename: A S
authors.initials: AS
authors.lastname: Wolf
authors.forename: R
authors.initials: R
authors.lastname: Benz
authors.forename: G
authors.initials: G
authors.lastname: Keckstein
authors.forename: K
authors.initials: K
authors.lastname: Sterzik
mesh_terms: D000328:Adult; D000568:Amenorrhea / Q000097:blood*; D005260:Female; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood*; D008599:Menstruation Disturbances / Q000097:blood*; D009638:Norepinephrine / Q000097:blood; D009839:Oligomenorrhea / Q000097:blood*; D010807:Physical Endurance; D010809:Physical Fitness; D012420:Running; D001615:beta-Endorphin / Q000097:blood
chemical_list: D001615:beta-Endorphin; D007986:Luteinizing Hormone; D009638:Norepinephrine
vernacular_title: LH-Episoden unter Leistungssport.