In females, the growth process is characterized by increased mass and strength of bone relative to that of muscle, whereas in men, increases in testosterone fuel large increases in muscle, resulting in muscle forces that coincide with a large growth in bone and strength.

Studies show trans women do have an unfair advantage in sports.

Biological males have statistically proven slightly higher bone density, heart size, lung capacity along with differences in skeletal mechanics compared to biological females. Trans people are not interchangeable with biological sexes.

MTF trans athletes even after reduced testosterone retain higher muscle mass and bone density contributing to increased performance. This leads to an unfair advantage in most sports.

?Transgender MTF athletes LIKELY retain some degree of biological advantage even after lowering testosterone levels?. "the studies that exist for strength suggest that about one-tenth of the male-vs-female advantage is removed.