Experienced vaulters like to step back 5-6 strides or more from the pit, run in and plant the pole applying pronounced pressure with the left arm and land on their back with the feet elevated as high as possible overhead. Some coaches teach this exercise from the beginning of vaulting practice which we do not favor, because THE POTENTIAL VAULTER CAN LEARN BAD HABITS BEFORE HE HAS EVEN MASTERED THE FUNDAMENTAL TECHNIQUES INVOLVED IN POLE VAULTING. IT MAKES THE BEGINNER THINK THAT ALL THERE IS TO POLE VAULTING IS BENDING THE POLE (14).
A POLE VAULTER MUST FIRST LEARN HOW TO POLE VAULT - - WHETHER THE POLE BENDS VERY MUCH OR NOT AT ALL (14).
It is one thing to see a world champion warming up for the vault with some elaborate pole bending technique which has taken him 10 years to master and another thing to have a rank beginner think that this is a basic pole vault learning exercise.
The fallacious carry-over of this of this rocking back, pole bending technique is seen in many high school vaulters who ONLY LEARN TO TAKE OFF AND ROCK BACK ON THE POLE. THEY NEVER COMPLETE THE ROCKING, PIKING ACTION OF THE LEGS, PULLING AND TURNING...THESE YOUNG VAULTERS, WHO MAY ALREADY BE ACHIEVING 13-14' IN THE VAULT SIT IN THE AIR WAITING FOR SOME MIRACLE OF FIBREGLASS to throw them over the bar. They haven't even learned how to pole vault yet! (14-15)
None of the emphasis is added, that is how it appears in the book.