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.

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.

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 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.

For transgender women runners, boosting their training might help maintain their running performance after starting hormone therapy.