How your menstrual cycle and time of day affect strength and thinking
Part of Hormones & metabolism, Women’s health & pregnancy clinical trials.
This study looks at how the time of day and your menstrual cycle (especially hormone levels) may affect your thinking and physical strength. If you are a young female athlete with a regular cycle, you may be able to help researchers understand these effects.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are female (as assigned at birth) and are between 18 and 30 years old.
- You are a local-level competitive athlete (like a BUCS member) who trains about 3 times a week and competes regularly.
- You have a regular menstrual cycle, meaning periods every 21 to 35 days and at least 9 periods a year.
- You have not used any hormonal birth control (like the pill or IUD) in the last 3 months.
- You have no diagnosed menstrual disorders (like endometriosis or PCOS), sleep disorders, or neurological/psychiatric conditions (like ADHD or dyslexia).
- You do not drink more than 400mg of caffeine a day (about 4 cups of coffee) and have no recent injuries or blood donations.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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