As a trans woman who works out but doesn’t really do sports because people make them suck, I have to say that I don’t think that study is correct based of my experiences. Trans women often have lower testosterone than cis women after being on hrt for a while (2 years max typically, but it can be sooner). When I started hrt, literally only about 2 weeks later I noticed massive muscle atrophy and I literally couldn’t even help my father move heavy furniture that I doubt I would have had a problem with before. After that I decided to start lifting and it’s been a few months since then I am still not as strong as I used to be.