The Claim
In a transgender female sub-elite cyclist, one year of gender-affirming hormone therapy was associated with a 7–13% decline in handgrip strength, a 23–29% decline in countermovement jump performance, and a 15–30% decline in V̇O₂max, indicating reductions in key physiological performance indicators relevant to cycling.
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.
A female-to-male cyclist saw her strength, jumping power, and stamina drop after a year of hormone therapy as part of her transition.
See the scientific wording
In a transgender female sub-elite cyclist, one year of gender-affirming hormone therapy was associated with a 7–13% decline in handgrip strength, a 23–29% decline in countermovement jump performance, and a 15–30% decline in V̇O₂max, indicating reductions in key physiological performance indicators relevant to cycling.
What the research says
1 studyThe study followed a transgender female cyclist for a year on hormone therapy and found her strength, jumping ability, and endurance all decreased, just as the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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