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Body Clocks - Coordination of Peripheral and Central Oscillators
Confluence of Sleep, Circadian Rhythms, and the Menstrual Cycle on Injury Risk in Women
Who can join
Ages 18 to 30 · Women · Healthy volunteers welcome
Full eligibility criteria
Inclusion Criteria: * Regular menstrual cycle (21-35 days) * 18-30 years old Exclusion Criteria: * Neuromuscular or neurodegenerative disease * Gut disorders * circadian sleep disorders * prescription medications affecting sleep * recovering from physical injury * taking hormonal birth control
About the study
The investigators are conducting an observational trial examining young women over the course of 28 days in which we are monitoring movement, sleep, heart rate, oxygen saturation, gut physiology, light, and menstrual cycle. The inter- and independence of the cyclicity of these variables with each other, the circadian cycle, the menstrual cycle, and the sleep cycle will be tested.
Sponsor: Stanford University · Participants: 20 · Started: Apr 15, 2026
Contact the study team
- Lara Weed, BS, MS · Phone: 650-723-2300
Official record on ClinicalTrials.gov — NCT07459764
Locations in the U.S.
| California | Stanford University, Stanford |
From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.