Thank you Ian (and Dejan) for the quick responses! Ian, I think the posts you provided links to are exactly the issues that I am having.
In full transparency, I have helped our club run some head to head delay type races, so I have tested different rider heights/weights on a few different courses to work out approximate delay times. So although I don’t have anyone else in my household that uses my account, I have played around with different rider heights and weights. But I’ve been careful to only change those values in only those few rides, and have always been sure to change the values back to their correct values before saving the ride (and then double and triple checking before any races).
I am aware that Zwift uses all activities (those included) within their calculations, so I have been sure to keep my pure watts and W/kg for those tests below my correct peak powers and W/kg. However, I did not expect the weights to have an impact on the actual recorded peak W/kg, which I would assume should be a snapshot in time (power and weight).
What I also found perplexing is that I only used 50kg, 60kg, 70kg, and 80kg in my tests, but the back calculated weights for my 3 min to 30 min powers were 75, 68, 61, 64, and 66 kg, respectively, with no apparent correlation to the tested weights. It was also interesting that the same ride had different weights associated with it. So Zwift’s coding must have interesting assumptions included within it.
[I found similarities within both Mickael’s and John’s numbers (from the link you shared), including one of John’s rides which had four different weights associated with it, with his 30s, 1m, 3m, and 12m powers, ranging from 37-81kg, all from the same saved ride!?!]
I guess if this should all reset within 60 days, I’ll wait it out, and if I have any more tests to run, I’ll do it on my kid’s account as they don’t race
But it would be interesting to know or understand how the weight is used within the CE calculations… Zwift??