So— I’m back. Here is my story: I contacted Apple and eventually got through to a senior advisor. She was extremely helpful. I sent screenshots of my data, pictures of a workout, and a chart showing declining VO2 max. We installed some analytics to my watch and phone, and then I did my regular workouts for the next couple of days. Afterwards I sent her a couple of screenshots and then was contacted by someone from “Health and Safety.” It appears that my watch did not record my heart rate at certain times so he had me change bands (I had at some point changed from my regular sport band to the metal one because it had gotten dirty). He said the sport band is made to be more accurate. I wore the sport band for the next several days and the VO2 max stayed the same and the heart rate chart was available each time. He says, “they’re not doctors” and can’t analyze the data but if you have a heart rate chart and VO2 max basically the watch is working. He had me tighten my band and move it away from the bone on my wrist (said it shouldn’t be touching it). I want to state that both people I spoke to were EXTREMELY helpful and answered all my questions. The bottom line- the new update is supposed to be more accurate than whatever they had before and Apple is always trying to improve, especially in the field of health and safety.
Did my V02 max improve once I changed bands and tightened the watch band? Not really. It went up .4 and seems to have stabilized there. Overall, I still went down 9 points, so I’m not a happy camper.
if anyone else finds out more, please let us all know. Going out to do my speed walk now. Maybe my VO2 max will improve. Ha!