The Claim
In transgender women endurance runners, average race times increase by approximately 14.6% after 31 months of gender-affirming hormone therapy (GAHT), with greater performance decrements in middle- and long-distance events (14.6–17.4%) compared to sprint events (11.2%), indicating that event duration modulates the magnitude of performance change following hormonal intervention.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
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.
See the scientific wording
In transgender women endurance runners, race times increase by approximately 14.6% on average after 31 months of gender-affirming hormone therapy (GAHT), with greater performance decrements observed in middle- and long-distance events (14.6–17.4%) compared to sprint events (11.2%), suggesting that event duration influences the magnitude of performance change following hormonal intervention.
What the research says
1 studyThe study looked at how running times changed for transgender women after hormone therapy and found they got slower by about 14.6% after 31 months, especially in longer races, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.