![PDF] Validation of the Apple Watch for Heart Rate Variability Measurements during Relax and Mental Stress in Healthy Subjects | Semantic Scholar PDF] Validation of the Apple Watch for Heart Rate Variability Measurements during Relax and Mental Stress in Healthy Subjects | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/89994d19335f7a6becba8d4f8cb25494ef629a07/3-Figure1-1.png)
PDF] Validation of the Apple Watch for Heart Rate Variability Measurements during Relax and Mental Stress in Healthy Subjects | Semantic Scholar
![Sian Allen on X: "HRV - APPLE WATCH Too many issues to make it useful: • It doesn't record a value every day • Sometimes crazy artifacts skew the values 👇 • Sian Allen on X: "HRV - APPLE WATCH Too many issues to make it useful: • It doesn't record a value every day • Sometimes crazy artifacts skew the values 👇 •](https://pbs.twimg.com/media/FGVhAC-VUAkoAy3.jpg:large)
Sian Allen on X: "HRV - APPLE WATCH Too many issues to make it useful: • It doesn't record a value every day • Sometimes crazy artifacts skew the values 👇 •
![Heart Rate Variability from Apple Watch 4 vs. a Nexus 10 Biofeedback unit. Quite similar! : r/AppleWatch Heart Rate Variability from Apple Watch 4 vs. a Nexus 10 Biofeedback unit. Quite similar! : r/AppleWatch](https://i.redd.it/az68eo39xcr11.jpg)