The VP of health, operations chief, and VP of fitness technologies spoke with Darrell Etherington about the new health features in watchOS 9.
One of the new health features of the Apple Watch is the ability to view an estimate of how frequently your heart is in arrhythmia. The feature is meant for people who have been diagnosed with the arrhythmia.
The FDA cleared the feature in the US after it was tested.
"As Jeff mentioned, everything we do in health is based on the science, and with participants wearing both Apple Watches and an FDA-cleared reference device, a clinical study proved the validity of the data," said Desai. The average difference between the two devices is less than 1%.
Williams said that the AFib History feature could be useful if the treatment is unsuccessful and the patient continues to experience a condition called chronic arrhythmia.
Availability of the feature will be limited at launch due to the fact that it isn't currently approved in all countries.
You can see how much time you spent in REM, core, and deep sleep, as well as when you woke up, with sleep stage tracking on the Apple Watch. Core sleep is what Apple refers to as light sleep.
Prior to sleep stages, we were focused on helping people meet their sleep duration goals, but we wanted to go further and dig into the science, and provide users with more information about their sleep cycles. Users will be able to see their sleep stages using the signals from the Apple Watch's heart rate sensor.
The app remains suitable for both beginners and advanced athletes despite the fact that it displays more information.
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