The Claim

A single-case analysis indicates that after one year of gender-affirming hormone therapy, a transgender female cyclist may experience a reduction in physiological advantages compared to cisgender female athletes, although performance metrics showed variability across different domains.

Source: A unique pseudo-eligibility analysis of longitudinal laboratory performance data from a transgender female competitive cyclist

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
24score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

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.

See the scientific wording

A single-case analysis suggests that after one year of gender-affirming hormone therapy, a transgender female cyclist may have reduced physiological advantages relative to cisgender female athletes, though performance metrics remained variable across domains.

What the research says

1 study
  1. Study: A unique pseudo-eligibility analysis of longitudinal laboratory performance data from a transgender female competitive cyclist

    The study looked at a transgender woman cyclist on hormone therapy and found that after a year, her strength and endurance decreased, making her more similar to cisgender female cyclists, though some differences remained.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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