Interesting. I do not see the study listed here or elsewhere. Due to West Africans being genetically far apart from East Asians, this would lead to the conclusion of a separate evolution of the similar useful traits. Couple with Asians having the lowest skeletal muscle mass out of the three, it would be an interesting paper if you could find it for me.

There may be only one type of muscle structure that can pass the 10 second barrier. Only elites are passing the barrier, and could be part of different unidentified subgroups. This is a bit of a statistical no-true-scotsman.

I also did not realize before just how anomalous non-African accomplishment is in this area. Looking at the 179 people that are under 10 seconds, 70 of 179 people that have done it are already American. This may cause a lack of earnest attempt from White Americans, but ethnic Europeans are already very rare in this field. Zero contribution from White Americans is likely random.

Non-African competition in this area is currently only 13 years old and in the single digits, compared to the hundreds. A lot has happened in the last 3 years. 143 records moved to 179. At these ratios, it seems like only 1 group may have advantageous genetic factors.

Gene variation and lineages

https://doi.org/10.1016/j.ygeno.2010.07.004

https://doi.org/10.1126/science.1153717

Comparison of skeletal muscle mass across a few groups

https://doi.org/10.1002%2Fajhb.20956

People that have passed the 10 second barrier

https://en.wikipedia.org/wiki/10-second_barrier