Key Takeaways
1. Whoop’s updated Sleep Staging Algorithm enhances sleep stage detection accuracy by 7% and improves sleep/wake detection precision by 3%.
2. Users may see changes in their sleep statistics, particularly in awake time and restorative sleep, but other metrics like Recovery and HRV remain unaffected.
3. The update is based on two years of research from Central Queensland University and the University of Arizona, with high accuracy rates in heart rate and HRV measurements.
4. The new algorithm was implemented on February 24th, and data recorded before that date will not change.
5. Users of Whoop devices, such as the Whoop 4.0, will receive notifications in the app about the updates.
Whoop has rolled out an update for its Sleep Staging Algorithm in its health and fitness trackers. The company asserts these modifications enhance the accuracy of sleep tracking, providing “clearer insights” into your rest and recovery.
Enhanced Sleep Stage Identification
Whoop states it has improved the way it detects the four sleep stages: wake, light sleep, REM, and deep sleep. The company claims this update has increased accuracy by 7% due to the integration of more data points. Additionally, there’s been a 3% boost in sleep and wake detection precision. This enhancement should result in fewer errors in identifying wake times, which can happen when you shift positions during sleep.
User Feedback on Sleep Metrics
According to Whoop, users might notice variations in their sleep statistics, especially regarding their awake time and restorative sleep data. Some users have shared on Reddit that they’re experiencing a noticeable decrease in their total wake times. However, Whoop assures that other metrics like Recovery, Strain, and HRV will not be affected by this update.
Research Behind the Update
The new algorithm started to take effect on February 24th, and any sleep data recorded prior to this date will remain unchanged. This release is based on two years of research conducted at Central Queensland University and the University of Arizona. The polysomnography (PSG) data revealed that Whoop’s heart rate measurements boast an accuracy of 99.7%, while HRV measurements are 99% accurate. Moreover, the brand’s devices have been shown to surpass competitors in calculating total sleep time.
The improved Sleep Staging Algorithm will automatically update for users of devices like the Whoop 4.0 (currently priced at $239 on Amazon). Users can expect a notification in the Whoop app detailing the changes.
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