CycleSync Data Donation

Heart Rate Variability and Female Physiology: An Anonymous Digital Citizen Science Study

The CycleSync study is a global digital citizen science project investigating how female physiology—particularly the menstrual cycle—interacts with heart rate variability (HRV) and other health data collected from wearable devices in everyday life. Led by researchers at University College Dublin, the study integrates survey responses, smartphone data, and wearable technology to better understand patterns in women’s health, wellbeing, and performance. Although wearable technology is rapidly advancing, female physiology remains underrepresented in many data models. CycleSync aims to address this gap by collecting large-scale, real-world data from women across different life stages. Using advanced data analytics and machine learning, the study seeks to generate new insights into how physiological changes affect recovery, readiness, and overall wellbeing. The findings will contribute to:
• Future research in women’s health and sports science
• The development of more inclusive wearable technologies
• Evidence-based recommendations for health, wellbeing, and performance