The Claim
After two years of feminizing hormone therapy, nonathletic transgender women exhibit no statistically significant difference in running performance compared to cisgender women, indicating that endurance performance may reach levels comparable to cisgender females within this time period.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
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 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.
See the scientific wording
After 2 years of feminizing hormone therapy, nonathletic transgender women show no statistically significant difference in running performance compared to cisgender women, suggesting that endurance performance may converge with cisgender female levels within this timeframe.
What the research says
1 studyStudy: The Impact of Gender-Affirming Hormone Therapy on Physical Performance
The study found that after 2 years of hormone therapy, transgender women’s running performance was similar to cisgender women’s, with no advantage, which supports the claim.
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.