Andy_C wrote:My best recommendation is that you concentrate on the run, plant and take off. That in itself is a tall order but just remember, nothing happens in the air without those three so you might as well give yourself the best chance!
Great advice! You'll clear some nice heights by just focusing on these elements. Most stuff in the air after take-off will happen naturally and easily if you get the approach run, plant and take-off right.
Andy_C wrote:Trying to run too hard will put you out of position.
Not sure exactly what Andy_C was trying to say here, but you should always be running at 100% effort. The problem is most young athletes have no idea how to run mechanically correct. The approach run is a very structured run-up that is hard to explain in words. It's exactly the same as 100m sprint technique except your start position is upright and tall and stays that way. You have to come out of your first step at 100%. You should feel like you are bounding "high" during your acceleration and then think "get your feet down quick" around 3-lefts out from the take-off ( mid mark ). I don't want to confuse you too much, but here's a freeze frame of what your first step should look like:
Note the full extension of his back leg. The front leg high knee is a REACTION to this full extension off the drive leg. You must fully extend off your drive leg throughout the entire acceleration phase of the approach run ( until around 3-lefts out from take-off when your leg turn over is more your focus ). Most beginners barely get their drive leg extended 75% which makes then run low to the ground and never reach full efficient running speed. This sets them up in a poor and weak position for what needs to be a powerful exploding take-off.
Now watch the whole video here. Take video of yourself and compare it to the snapshot above and the video below.
http://www.mansfieldathletics.com/pole_ ... Video1.movProper approach run mechanics in the pole vault are the most under trained element of the vault for young athletes. It's also the root of most problems in the vault.
Never think "Start slow and gradually speed up" for your approach run. It looks that way from afar, but you are actually exploding 100% off each step which makes you speed up and stay in the most efficient sprinting position possible.
There's more detail to it than this, but it's the basis for what has to happen.