| When the take-off is done correctly, it flows smoothly into the rock back phase. The vaulter remains upright in running posture after leaving the runway and follows the inward bending pole as long as possible.
If there is a poor take-off, there is very little drive-swing. Instead, the vaulter is soon forced onto his/her back.
The rock back is a forward/upward movement that resembles running in the air. It is the same position assumed by a long jumper after take-off.
WARNING: Stay upright; don't go onto your back. This will destroy the Rock Back.
Don't pull or row the pole! Let the left elbow bend so the chest can move forward/upward in front of the top arm after take off. I call that "getting into the pocket." It happens naturally.
If the drive-swing is effective the vaulter forms a reverse letter "C" (looking at him/her from the right side) soon after leaving the runway. The best pole vaulters drive in front of the top hand and stay in front of it for a long time. This sets up the next phase, the swing-up.
The rock back ends when the pole stops bending inward. If the vaulter is using a pole that is too soft, the pole continues bending inward too long. That's not good, because over bending causes the pole to break. Also a too soft pole doesn't give the vaulter anything back. It bends so much that it doesn't unbend with power.
When I say maintain the reverse letter "C" as long as possible, I'm assuming the vaulter is using a pole that isn't over bending. When a pole is too stiff, it won't bend inward long enough for the vaulter to execute the rock back. The pole might be too stiff because it is overweight for the vaulter, or it could act too stiff because the vaulter has a poor Approach Run, Plant/Pole Drop or Take-Off.
Shortly after take-off, the upper part of the pole will stop moving forward, and the right arm will start to drag behind the head as the vaulter follows the inward bending of the pole. As the right arm drags more behind the head, the left arm will bend to allow the vaulter's body to continue moving upward and forward in an upright position.
The pole continues to bend inward towards the pit slowing the vaulter's forward momentum. The right leg is flexed with the thigh parallel to the ground, and the left leg is fully extended with the toes of the left foot pointed down toward the runway. This is commonly called the "hang" position. At this time, if a picture were taken from the right side of the vaulter, a backwards "C" would be seen moving upward and forward towards the pit.
C-Position: At impact, the vaulter should feel their hips and shoulders move forward of their plant. This will create a "C- position" as the top hand falls behind the head and the takeoff leg stays long and behind the body. This will activate a stretch reflex in the shoulders and hips that will aid in the Swing to Inversion Phase. The athlete should continue to press the left hand up rather than out. The left arm can bend but should not collapse during this phase.
The vaulter continues to follow the top portion of the pole upward and inward as fast and as long as possible. It is imperative the athlete not roll to his back too soon. Keep the body in front of the dragging right arm and simply follow the inward bend staying in an upright position for as long as possible. Any premature pushing, pulling, or rowing of the pole will alter the vaulter's body position and disturb the bending action, consequently aborting the hang-drive.
The hang-drive ends when the pole stops bending towards the pit. Upon completion of the hang-drive, the vaulter has driven upward and inward while remaining in an upright "hang" position behind the forward bending of the pole.
As you take off, stretch your body from hands through your feet as far as you can go. Your entire body must be solid a floppy body absorbs energy. This motion is a natural part of jumping hard and puts your body in the correct position to swing.
Do not hang on the pole. Extend your body, and then begin your swing extending your body is not a passive or slow action. Extending should be done quickly and aggressively as the vaulter takes off. Once the body is fully extended, the swing begins immediately.
The vaulter should not initially feel a support from the pole after leaving the ground. If he does, this means that he was ripped off the ground and did not successfully jump off the ground. Not until the vaulter feels a firm support should he initiate the swing portion of the vault. While taking off the ground, the vaulter should attempt to extend off his trail leg, lead with his chest, keep his torso perpendicular to the runway, drive the lead (right knee) and relax at both shoulders. This causes a "C" formation and is the most important position immediately following take-off to achieve penetration. Both arms should be fully extended.
Never pull down or bend the right arm. A slight bend in the left arm is acceptable. However, I still believe a more dynamic vault results from a straight left arm. The mistake is made when the vaulter locks his left arm out in front of him. He should attempt to resist with the left arm, and allow the pole to go over his head. It is important to keep the shoulders square throughout this process. The idea is to create a 180 degree angle between the left arm and the torso prior to the swing. Having achieved this position, the vaulter will have a much more powerful swing.
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