Caster Semenya decision is wrong-headed and discriminates against elite female athletes | Opinion
Wednesday was a dark day for women’s sport. The Court of Arbitration for Sport, the international body that handles the highest sporting disputes, ruled in a 2-1 decision against Caster Semenya’s challenge to the latest effort by the International Association of Athletics Federations to limit the level of natural endogenous testosterone that female athletes like Semenya may have.
The science on which the IAAF formed and defended its policy is highly suspect and, in my expert opinion, doesn’t even support it. It was a 2013 study, published in 2017, that tested the correlation—not causation—between performance at IAAF world championships and endogenous testosterone. In women, the reported relationship is unreliable and nonpredictive. There’s no pattern to the data, and the overall average performance for the high-testosterone athletes was 0.3 percent better. In Semenya’s event, the 800 meter, the performance of the high-testosterone women was only 1.8 percent better than the performance of the lowest-testosterone women.
So the height difference between the winner of Olympic gold and the athlete who tied for 10th was over 10 inches. That’s a huge competitive advantage, much larger than the 2 to 3 percent being unreliably attributed to testosterone.
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