Comment by pricklyprice

Interesting, there is no mention of neural networks in that 2021 pdf from Apple (https://www.apple.com/healthcare/docs/site/Using_Apple_Watch...). Also, it seems like the only reference of VO2 Max computation with neural net is on empirical.health blog. https://imgur.com/a/2hX7XNc

I wonder now if all of the derived metrics on Garmin (Training readiness, Training load, Training status)are purely statistical algorithms