Here’s an article that just came out a few weeks ago, looking at muscle mass and strength in transgender men and transgender women over the first 12 months of gender transition. https://www.biorxiv.org/content/bior...82557.full.pdf

Bottom line:
Transgender women (ie persons who transitioned from male to female) lose muscle mass over their first 12 months of transition but not muscle strength. Transgender men gain muscle mass to a much greater degree than transgender women lose muscle mass. Yet transgender men do not have greater muscle strength than trans women- ie if you take the female body and add testosterone, it is still not stronger than the formerly male trans woman body.

During the 12 month study period, serum testosterone levels for transgender women were in the female range, meaning if the study subjects were racing under UCI or USAC rules, they’d race as women.

The study subjects were not athletes nor were they training in any way. Just moderately active people, most of their exercise was walking.

All of which supports my previous arguments in this thread that although aerobic performance may be diminished in transgender women, body size and muscle mass differences remain with trans women being larger than cis women. This study specifically demonstrates that trans women retain the muscle strength they had as a male, at least for the first 12 months after transition. Thus, they likely have a very significant advantage over cisgender women in any sport in which sprinting is important. All of which is what you’d predict if you have a good understanding of physiology, but you never know for sure unless you set up a study and see.