"not racial". Well, given that track and field is brutally dominated not just by black Africans/Caribbean Islanders, but that they tend to come from only a han

"not racial". Well, given that track and field is brutally dominated not just by black Africans/Caribbean Islanders, but that they tend to come from only a handful of ethnic groups, I tend to think that direct race has at least some influence. Most body builders intuitively understand that being black is an advantage in building muscle. But don't trust me, trust a study that also points this out: https://www.researchgate.net/publication/26298766_Ethnicity-Related_Skeletal_Muscle_Differences_Across_the_Lifespan#:~:text=Generally%2C%20muscle%20mass%20is%20highest,et%20al.%2C%202010)%20 https://www.researchgate.net/publication/26298766_Ethnicity-....