It is about the observed and occasionally measured phenomenon of sports medicine injury rate differences between males and females.
But, in the evolving language of science, these are not gender studies per se, these are sex studies. As we learned at AAOS (American Academy of Orthopaedic Surgeons) this year, sex refers to the biological distinction between males and females while gender concerns the social differences between males and females. More simply stated, humans have the ability to choose their gender but not (without surgical intervention, that is) their sex.
Source: Ryortho
