even after a sex change operation (it only replaces genitals) the other muscles in arms and legs are still masculine. ...
Bet if you tried to restrict them to mens' sports they'd bitch.
And bitch they would. I guess those that approved for such participation are professionals and have their bases but, the fact that the makings of man's body was already in place, one signal genital doesn't alter the whole thing.
I know people would argue that some women are more muscular than men but in those cases are often due to genetic mutation or steroid enhanced muscle development. Science will always tell you, a man has 40+ percent of the body as muscles while a woman has just about 20-28 percent. This explains for the soft body nature of a woman and in sports, it'd often about the muscles.
Allowing transgender participation is just an introduction of bias and that isn't good for the spirit of a good sportsmanship.