CN: sport, trans women

I've looked around with no luck - does anyone know what "latest peer-reviewed research" world rugby has used to decide that transition doesn't reduce bone density/muscle mass in transgender women who transition in adulthood?

This is obviously following the Guardian article following them seeing a leaked 38 page document.

Some of the stuff in the Guardian reporting sounds dodgy, but we know they often lean phobic and I would love to see it in context in the document itself. https://www.theguardian.com/sport/2020/jul/19/transwomen-face-potential-womens-rugby-ban-over-safety-concerns

This one is close to my heart. Rugby has been my sport all my life. I grew up with my dad playing it, and I played it for more than a decade until accumulated injury forced retirement. It's a very physical sport and there is risk from contact, so I see why it's a test case here.

Even from the selective quoting from the Guardian, even if everything they said was 100% accurate, it doesn't sound like a blanket ban would be appropriate (trans women who transition before puberty? Touch/tag rugby?). But the selective quoting makes me suspect the accuracy.

Talking about the increased risk of injury a cis female player faces in contact with a male player, for instance, doesn't seem relevant when considering trans women who have medically transitioned?

So, yeah, would really like to know what research they're looking at.

Thinking about it, this rugby question is lightly different to the standard rhetoric. Less "not fair to cis women as trans women have a sporting advantage because *things that don't correlate well with being better at sports*", more risk-focussed. One to watch for contact sport.