Phase 03 / 06
Takeoff
Leap off the back leg, free leg drives up, body angles slightly back. The vaulter's body stores stretch energy through the arm, chest, hips, and legs that the swing-up will release.
Cue"Leap, don't dive. Foot under top hand."
TargetPlumb takeoff: takeoff foot directly under top hand. Takeoff angle ~22° from horizontal (Dahlman).
FramesFoot grounded with top hand vertical above; free knee at 90°; body in reverse-C with takeoff leg dragging.
FailureFoot under or behind top hand ("under" takeoff): pole can't bend properly, and energy returns horizontally back at the runway.