VO2 max with Apple Watch Ultra and Strava
Last January I shifted from Apple Watch 6 to Apple Watch Ultra. At the same time, I shifted from using Nike Run Club to Strava to monitor my runs. As well, I started running much more regularly on a treadmill than outdoor. After this, the VO2 max recorded by Apple Fitness has been tremendously going down over the last two months, despite the fact that I increased my volume of running by roughly 30%. I checked with Apple Support but they could not give me a definitive answer. I'm wondering whether this is due to lack of syncing between Apple Watch Ultra and Strava. Anybody has been experiencing the same? Can anybody advise? Thanks
Apple Watch Ultra