I think interest and hard work is definitely a factor, but I also think that genetics is playing a role. The top 30 record holders in the 100m sprint are all o

I think interest and hard work is definitely a factor, but I also think that genetics is playing a role. The top 30 record holders in the 100m sprint are all of African descent: https://www.worldathletics.org/records/all-time-toplists/sprints/100-metres/outdoor/men/senior https://www.worldathletics.org/records/all-time-toplists/spr... It's possible that White and Asian people just less interested, but it's not the sensible null hypothesis, given that we can observe with our own two eyes phenotypical differences in physique between the racial groups (e.g. Asians being shorter)