Gait Biomechanics Among Female Endurance Runners: Comparing Days With and Without Menstrual Cycle–Related Symptoms

This study prospectively monitored distance runners' activity while simultaneously recording symptoms related to the menstrual cycle. While runners reported fewer days running when symptomatic, we did not identify a difference in objective biomechanical measures between asymptomatic or symptomatic runs. Perceived symptom burden was present in this sport population and may warrant further exploration of perceived expectations of the menstrual cycle to athletic performance.