A female-to-male cyclist started hormone therapy, and within a year, some of her performance numbers looked more like other women's, while others didn’t — showing a mix of changes.

One transgender woman cyclist on hormone therapy for a year might have lost some physical edge over cis women cyclists, but her performance changed in different ways depending on the type of test.

Trans women who aren't athletes seem to run about as well as cis women after two years on hormone therapy — their endurance might become similar during that time.

Trans women athletes tend to slow down more in long races after hormone therapy than in short sprints—suggesting endurance is affected more than quick bursts of power.

A female-to-male cyclist saw her strength, jumping power, and stamina drop after a year of hormone therapy as part of her transition.

Trans women runners get slower over time after starting hormone therapy, especially in longer races — their race times go up by about 14-17%, while sprints are less affected.