vas_a_morir
Banned
You've refuted the myth yourself by using specific subsets of a group of people.
"East African" runners. "North European" heavy lifters.
There are some populations that live in higher elevations of Asia that have been shown to have elevated levels of hemoglobin, allowing them to survive better in an environment that's low in atmospheric oxygen. That doesn't mean that all yellow people have the same genetic attribute. The genetics of people and populations are affected by their environments and Africa (like Asia or Europe) is an incredibly diverse set of environments that yield sub-sets of the population that have genetic advantages over others (height, muscularity, arm length, skin color, etc).
This doesn't refute anything. Nobody is saying the slowest black man in the world is faster than the fastest white man in the world. Rather, that genetics within a certain ethnic group tend to produce more athletes that excel at certain sports. Even with everything you said, it still supports that genetically certain groups are seemingly 'engineered' to excel at certain things.
The myth would be that Steve Urkel can outrun Wes Welker just because he's black. But, is it a myth to say that certain ethnic groups have genetics that lend themselves to certain sports due to natural genetic Darwinism?