HRV Metrics: RMSSD
RMSSD is the Root Mean Square of Successive Differences.
It is a popular and accurate snapshot of the Autonomic Nervous System (ANS) parasympathetic branch and is the basis of our “HRV Score”
- RMSSD is strongly backed by hundreds of research papers across health and fitness fields. Here are a few studies referencing its use:
- More research about the use of RMSSD can usually be found on PubMed, ScienceDirect or other research libraries.
For healthy individuals ages 25-74 years, the range is 7.3-65.7. You can find your specific healthy range in the Population Comparison feature of the app!