Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and Polar H10 for resting HRV. Limitation: filtering methods unclear. https://t.co/eUn68S6w5j https://t.co/OcLKr0pJFw
The Validity of Apple Watch Series 9 and Ultra 2 for Serial Measurements of Heart Rate Variability and Resting Heart Rate.
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Mar 2024 – Jul 2025Where it's discussed
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X / Twitter17 posts
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YouTube5 videos
AI synopsis
What people are saying
Discussions point out that while the study validates the Apple Watch's resting heart rate measurements, skepticism remains about its HRV accuracy, exemplified by comments like 'poor agreement' and questions about filtering methods, which reflect cautious engagement and interest in the device's clinical reliability.
The comments reflect mixed opinions, with some acknowledging the research but also expressing skepticism about the accuracy of wristband measurements.
There is a moderate level of interest, as posters recognize the significance of the study and its implications for fitness and health monitoring.
Posts show some engagement by referencing specific results and concerns, such as the limitations in measurement agreement and filtering methods.
The discussions suggest a moderate impact, highlighting ongoing debates about using consumer devices for serious health assessments, but not indicating widespread change or acceptance yet.
Abstract in brief
- This study evaluated the accuracy of the Apple Watch Series 9 and Ultra 2 in measuring heart rate variability (HRV) and resting heart rate (RHR), comparing them to a professional chest strap device (Polar H10) considered the standard.
- Results showed that Apple Watches tend to underestimate HRV values, with an average difference of about 8.31 milliseconds, and the measurements were not within the acceptable equivalence range, highlighting limitations in their current HRV algorithms.
- While RHR measurements from the Apple Watch were quite accurate, the discrepancies in HRV data suggest that consumer wearable devices need improved algorithms before being reliably used for clinical or high-performance purposes.]
Top posts
Most liked on X and BlueskyI will continue using chest strap for during training heart rate measurement & AM HRV checks. Great to see people studying latest gen equipment though. https://t.co/mbj5cIeROf
✨Editor's Choice Article✨ O’Grady, B.; et al. The Validity of Apple Watch Series 9 and Ultra 2 for Serial Measurements of Heart Rate Variability and Resting Heart Rate. Sensors 2024, 24, 6220.
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
All mentions
Understanding Heart Rate Variability and Wearable Device Accuracy
This video explores the history, science, and practical applications of HRV, including measurement methods and factors affecting accuracy. It also discusses the validation of Apple Watch Series 9 and Ultra 2 for HRV and…
Understanding Heart Rate Variability: Measurement and Interpretation Techniques
HRV Heart Rate Variability shows how your body responds to stress exercise and recovery. This video explains what HRV is, how to measure it, and what your numbers mean. It also covers the difference between HRV and…
Understanding Heart Rate Variability: Measurement, Significance, and Applications
Heart rate variability HRV measures the time between heartbeats. This video covers what HRV is, its importance for health and stress, measurement methods, and the use of wearables. Essential for health tracking and…
Assessing Apple Watch Series 9 and Ultra 2 for Heart Rate Variability Accuracy
This video summarizes a study evaluating the Apple Watch Series 9 and Ultra 2's accuracy in measuring heart rate variability and resting heart rate, compared to professional devices. Findings highlight limitations in…
Evaluating Apple Watch Series 9 and Ultra 2 for Heart Rate Variability Accuracy
This video summarizes a recent study on the accuracy of the Apple Watch Series 9 and Ultra 2 in measuring heart rate variability and resting heart rate, highlighting limitations in their current algorithms compared to…
✨Editor's Choice Article✨ O’Grady, B.; et al. The Validity of Apple Watch Series 9 and Ultra 2 for Serial Measurements of Heart Rate Variability and Resting Heart Rate. Sensors 2024, 24, 6220.
I will continue using chest strap for during training heart rate measurement & AM HRV checks. Great to see people studying latest gen equipment though. https://t.co/mbj5cIeROf
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
The Validity of Apple Watch Series 9 and Ultra 2 for Serial Measurements of Heart Rate Variability and Resting Heart Rate. https://t.co/hpfO0m3FCr
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
RT @andrew_flatt: Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and…
Still not a big fan of HRV estimation from wristbands. Poor agreement between the Apple Watch (Series 9 & Ultra 2) and Polar H10 for resting HRV. Limitation: filtering methods unclear. https://t.co/eUn68S6w5j https://t.co/OcLKr0pJFw