Bolt's 9.58 in Slow Motion

[boldwarrior]

@James_Smith

Precisely my thoughts. Cycling the swing leg via bending at the knee more than is necessary to establish the optimal stride length relative to one’s power output is inefficient at that stage of the sprint.

IT’s like CF says in the very moment the Gun go off, Don’t swing the arm in an arc - move the arm in a straight Line from the Start to above your shoulder, It’s faster.