Madison Y Taylor, John O Osborne, Virginia De Martin Topranin, Tina P Engseth, Guro S Solli, Ditta Valsdottir, Erik Andersson, Gina F Øistuen, Ingrid Flatby, Boye Welde, Bente Morseth, Thomas Haugen, Øyvind Sandbakk, Dionne A Noordhof
PURPOSE: To investigate the effect of the MC and endogenous sex hormone concentrations on performance-determining variables in three distinct MC phases in endurance-trained females. METHODS: Twenty-one eumenorrheic trained/highly trained endurance athletes completed a standardized test battery during the early follicular phase (EFP), ovulatory phase (OP), and mid-luteal phase (MLP) for either one (n = 7) or two test cycles (n = 14). MC phases were determined using calendar-based counting, urinary ovulation testing, and verified with serum hormone analysis...
April 11, 2024: Medicine and Science in Sports and Exercise