Unread postby dj » Thu Dec 07, 2006 3:05 pm
hey
i hate to do this but this is a section of a pretrov article that i have never found fault with and might answer some of our questions... i have also seen a bubka interview where he made these same points...
i highlighted some points that help me reconfirm why i do some of the things i do on the run...
[quote]TECHNIQUE TRAINING IN POLE VAULT
Vitaly Petrov (Italy, Ukraine)
During the whole run, including the pole drop, the left hand is held high enough and on the same level (chest level).
The left hand provides the direction and the bearing point around which the drop and the plant take place. If this is the case, then during the run it must remain motionless, positioned higher than the left elbow at all times.
Any motions of the hand (forward, backward, down or sideways) will break the single vaulter/pole system.
The right hand which plays the major part in the drop and plant, through the support of the left hand, during the run moves more than the left one. In the various parts of the run its work, position and strength of the grip are different.
Acceleration as an element of the pole vault has its own components which are interrelated and which determine the vaulter’s activity during acceleration. Any changes or disturbances in any of the components will retard the speed and efficiency of the acceleration. The length of the top vaulters’ run-up is on the average about 42-46 m, with 18-20 strides. This length of the run-up provides for the implementation of an athlete’s running abilities and allows for a smooth acceleration.
The 1st part of the approach takes place on a distance usually covered in 4 to 6 strides; it is here that the athlete lays the foundation of the approach:
1. set up of a single system: vaulter/ pole
2. evolving pattern of the first strides
3. run-up rhythm (acceleration), length and rate of the strides.
Maximum speed, its rationality towards the end of the run-up are established and depend on the correctly performed first strides.
It is necessary to stress here that the position of the pole and the vaulter/pole system influence the length and pace in the beginning of the acceleration.
Low pole carry in the beginning forces the vaulter to make the first strides more rapid which will result in a fast acceleration, rigidity of the movements and tying-up of the muscles.
Excessively high pole carry in the beginning will make the first strides longer and result in the up-and-down swing of the system’s center of gravity, thus also affecting the smoothness of the approach. In the beginning of the first part the vaulter keeps the pole at 65-75 degrees to the horizon, and by the end, with smooth acceleration he will bring it to 50-60 degrees.
It is preferable to launch into acceleration the single solid vaulter/pole system while controlling it through the left hand. Various changes in the rate of the movements, pole position, irregular running often occur as a result of the vaulter’s attempts to start run with various jumps, imitating the start in long jump and triple jump). All of this gives rise to so many irregularities and errors that sometimes it is hard to understand the reason for the movements.
There are other ways of starting the run – 4 to 6 measured walking steps taken to the starting mark, with the pole held in the same position as for the acceleration run, which is uniform in its acceleration similar to high jumpers who start the run-up with strides. Thus their transition from walking to running is inconspicuous and natural.
Concentration before the vault, a desire to vault and confidence that this very vault will be the best are often the decisive factors for successful performance.
If the top of the pole is held a little to the left (from the run-up line), the left hand will be positioned in a more comfortable and elevated position, and the whole vaulter/pole system will become more compact (without shifting forward or to the right).
During the whole run, including the pole drop, the left hand is held high enough and on the same level (chest level).
The left hand provides the direction and the bearing point around which the drop and the plant take place. If this is the case, then during the run it must remain motionless, positioned higher than the left elbow at all times.
Any motions of the hand (forward, backward, down or sideways) will break the single vaulter/pole system.
The right hand which plays the major part in the drop and plant, through the support of the left hand, during the run moves more than the left one. In the various parts of the run its work, position and strength of the grip are different.
The second part of the run takes place on a stretch covered in 8 to 10 strides. The main task here is to achieve 90-95 per cent of the maximum speed. The pole is carried here at about 45/60 degrees angle. In the end of the 2nd part the athlete reaches the maximum stride length.
Acceleration here is sustained by the slight movement of the shoulders, synchronizing the work of the upper part of the body with the work of the legs, without, however, moving the pole in any direction. If in the beginning of the run the main effort is made at the push from behind, in the middle part, as the speed increases, the athlete is stretching and switches over to the active “drawing throughâ€Â
Come out of the back... Get your feet down... Plant big