Smartwatch-derived heart rate variability: a head-to-head comparison with the gold standard in cardiovascular disease.
Fabian TheurlMichael SchreinlechnerNikolay SapplerMichael ToiflTheresa DolejsiFlorian HoferCeline MassmannChristian SteinbringSilvia KomarekKurt MölggBenjamin DejakumChristian BöhmeRudolf KirchmairSebastian Johannes ReinstadlerAxel BauerPublished in: European heart journal. Digital health (2023)
Smartwatch-derived HRV provides a practical alternative with excellent accuracy compared with ECG-based HRV for global markers and those characterizing lower frequency components. However, caution is warranted with HRV markers that predominantly assess short-term variability.