Thanks for providing! His data collection and analysis is superb!
However, from my experience working with my otolaryngologist on my sleep apnea and my own experience training, his conclusive comments re: O2’s effectiveness for measuring sleep are not correct. Deep sleep is the most important phase for recovery. And while 75% accuracy against the gold standard polysonogram is well below the overall 96% that Oura claims, IMO, it does not justify his comments recommending the O2 not be used to measure sleep.
I found it interesting the info he provided on his decipher of Oura’s algorithm for readiness. And based on it, it easy to see why it may be useful as a measurement for general health but not very useful for athletes.
I look forward to his data and analysis of the O3 vs O2 after Oura introduces its new sleep algorithm in 2022.
On a related topic, Ray Maker provided his first impression review of the O3 (Oura gave him Beta product to test):