Recruiting in Calgary, AB.
Inclusion Criteria:
- Regularly menstruating, PCOS or athlete participants aged 18-45
- Negative pregnancy test at the beginning and at the end of each cycle
- Cycle lengths 24-34 days
- Knowledge of previous 3 cycle lengths
- Able to travel to Calgary Clinic for regular ultrasounds during the study period
Exclusion Criteria:
- For regular cycles
- Anovulation in the last 3 cycles
- Currently or in the previous 3 months, on medications that are known to impair or stimulate ovulation (e.g. oral contraceptives, ovulation stimulants, etc)
- Known conditions that impair ovulation or fertility: polycystic ovarian syndrome, endometriosis, pelvic inflammatory disease in the last year, pituitary adenomas, exclusively breastfeeding
- Previous surgeries impacting the menstrual cycle: hysterectomy, bilateral oophorectomy
- Currently pregnant
- For PCOS and athlete groups:
- Currently or in the previous 3 months, on medications that are known to impair or stimulate ovulation (e.g. oral contraceptives, ovulation stimulants, etc)
- Known conditions that impair ovulation or fertility: pelvic inflammatory disease in the last year, pituitary adenomas, exclusive breastfeeding
- Previous surgeries impacting the menstrual cycle: hysterectomy, bilateral oophorectomy
- Currently pregnant
For more information read here: https://clinicaltrials.gov/study/NCT05936840?locStr=Canada&country=Canada&aggFilters=status:rec&term=menstruation&rank=1