Kenyan marathon runners’ muscly legs shock physiological science

On Sunday, Geoffrey Kirui managed to win the 121st Boston Marathon as Kenyans dominated the men’s as well as females’ races.

In the last two miles of the race the 24-year-old runner pulled away from American Galen Rupp just to win the 24-mile race. Unofficially, it took him 2 hours 9 minutes and 37 seconds.

Apart from the Kenyan’s impressive time in surging temperatures in Boston, the runner’s quite extraordinary leg definition left many spectators stumped.

Ross Tucker, writing for Science of Sport, shared on Twitter that Kirui shocked him by his weird horizontal musculature in quadriceps. He stressed he had never seen such an athlete.

Eliud Kipchoge, the runner’s fellow countryman, who grasped Olympic gold in 2008, also boasted the same extraordinary muscle definition. There’s no doubt such a cutting-edge, but natural horizontal musculature gives an enormous advantage in running. That’s a huge asset of Kenyan runners.