https://www.bbc.com/future/article/20240731-the-sports-where-women-outperform-men

Øyvind Sandbakk, a professor of sports science at UiT The Arctic University of Norway and the director of the Norwegian School of Elite Sports (NTG), has found together with colleagues that the gaps in the average performance between elite female and male athletes have tended to plateau at around 8–12% difference in world-record results in favour of men. The gap can be significantly smaller for ultra-endurance swimming and larger for sports involving substantial upper-body strength, the study found.

There isn’t a clear linear relationship between testosterone levels and performance, says Mertens, a journalist focusing on sports and gender. “In fact, a lot of very elite male athletes have pretty low testosterone levels overall on average.” One endocrinology study found low testosterone concentrations in one-quarter of men competing in 12 of the 15 Olympic sports analysed. And Mertens says even women with hyperandrogenism, who can have testosterone levels that reach typical male ranges, don’t have the same level of performance as men.