Johnson's stiff upright running position and very short steps defied the conventional wisdom that a high knee lift was necessary for maximum speed. As of 2012, Johnson holds 13 of the top 100 times for the 200 metres and 27 of the top 100 times for the 400 metres. Of those, he holds 14 of the top 25 times for the 400 metres. He broke 44 seconds for the 400 metres twenty-two times, more than twice as many times as any other athlete.