Thanks, that helps understanding it better. I guess what I'm trying to say to the commenter, is that it would be useful to measure those things (assuming they

Thanks, that helps understanding it better. I guess what I'm trying to say to the commenter, is that it would be useful to measure those things (assuming they didn't) before thinking it falls into the category of those people in the study. The markers I mentioned are very easy to obtain, at least VO2max, and both cases can be reverted if the right specific type of training/intervention. I went from 30 to 38,7 Vo2 max in 10 months but I could only do it after fixing hormones, before training wasn't effective for me, and I even tried 20K steps day, without success. After hormones fixed, just 15k steps/day would increase slowly but steady my VO2 max.