In all sports that don't have a weight or height restriction, we do not place a cap on a single natural physical trait...except endogenous testosterone in trans & DSD women. Even though there are other physical traits that can confer a competitive advantages far exceeding 10%-12% - ThreadSky

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kirstimiller30.bsky.social • 15 days ago

In all sports that don't have a weight or height restriction, we do not place a cap on a single natural physical trait...except endogenous testosterone in trans & DSD women. Even though there are other physical traits that can confer a competitive advantages far exceeding 10%-12%

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kirstimiller30.bsky.social•15 days ago

In my expert opinion, no justification can be given for singling out endogenous testosterone and no blanket limit should ever be set, especially when it's only regulated in a tiny population of DSD and trans women athletes.

kirstimiller30.bsky.social•15 days ago

Most women have 0.5-3.0nmol/L, whereas men have >10nmol/L. However, some men, even elite competitive athletes, are in the ‘normal’ female range. And some women are above the ‘normal’ female range, even into the ‘normal’ male range.

kirstimiller30.bsky.social•15 days ago

Importantly the @WorldAthletics own best data on the competitive advantage of endogenous testosterone is that a woman with >10nmol/L levels would have a maximum of 2-3% competitive advantage, nowhere near the 10- 12% level representing the average difference of men and women.

seanhoyer.bsky.social•15 days ago

📌

kirstimiller30.bsky.social•15 days ago

The issue goes deeper. First, the range of variance of a given trait (height, power, VO2max, etc.) is much wider within a given gender than between the genders.

kirstimiller30.bsky.social•15 days ago

So while the average man is 10-12% faster or stronger than the average woman, the difference between the weakest man and the strongest man is many orders of magnitude higher.

kirstimiller30.bsky.social•15 days ago

There is massive overlap in traits between genders. Another way to put it is that the difference between genders is far smaller than the differences within a gender.

greedyrunner.bsky.social•15 days ago

I was a decent club runner 10-15 years ago. I would gauge my race performances against the fastest women.

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