Female ultramarathon performance 5
The female menstrual cycle lasts 21 to 35 days, and is generally presented as seen here, in an idealized 28-day cycle with a rise and fall of estrogen during the follicular phase and the rise of progesterone during the luteal phase. Follicle stimulating hormone (FSH) is responsible for the growth of the egg in the ovary and luteinizing hormone (LH) is responsible for the release of the egg from the ovary. Image: Zrtlab.com/blog/archive/how-your-hormones-affect-athletic-performance/
Bryon Powell is the Founding Editor of iRunFar. He’s been writing about trail running, ultrarunning, and running gear for more than 15 years. Aside from iRunFar, he’s authored the books Relentless Forward Progress: A Guide to Running Ultramarathons and Where the Road Ends: A Guide to Trail Running, been a contributing editor at Trail Runner magazine, written for publications including Outside, Sierra, and Running Times, and coached ultrarunners of all abilities. Based in Silverton, Colorado, Bryon is an avid trail runner and ultrarunner who competes in events from the Hardrock 100 Mile just out his front door to races long and short around the world, that is, when he’s not fly fishing or tending to his garden.
View all posts by Bryon Powell
