Regardless u still need explosiveness, strength and speed hence why some of the best players in the world are west African. Somalis might have the endurance to last 90 mins but we are usually very weak on the ball and aren’t as explosive as our African compatriots.Football (soccer) doesn't require a huge amount of musculature. The best teams are South European and Latino countries, these areas are not known to be beefy. All you need is a huge amount of practice and strategy.
The reason why ethnic minorities are overrepresented on football teams is because how cheap it is to practice football. Probably the cheapest sport to self-practice.