The original chart was designed by Olympian Jan Johnson. Jan, has given to FiberSport permission to promote and use "The All Brand Pole Resistance Chart." The purpose of the chart is to demonstrate that a shorter length pole and a more suitable grip, on a stiffer shorter pole can provide enhance vaulting skills and more efficient vaulting. While the weight rule ignores the kinetic energy factor, the rules are based on all the pole makers. A manufacturers pole selection chart is based on recommended weight and hand-grip guides for a beginning start point. Most trainers who recognize this do not fight the rule, but embrace it with a stiffer shorter length and more appropriate grip for their athletes! Example: a R#25 is the same stiffness pole in these lengths 11' 160 11'6 150 12' 140 12'6 130 13' 120 13'6 110 a vaulter who weighs 130 holding 11'6" and jumps 11'6" on at their grip less 8" in the box on a 12'6_130 rated pole might jump higher using an 11'6" grip on a 12'-140 pole or even a 12'-145 the resistance is the same. The take-off feel will be the same, but the recovery or return of the pole to vertical will now be stronger propelling or catapulting the center of gravity of the athlete upward and not forward to enable a pull-turn-push for bar clearance rather than striking the bar moving forward.
When setting up your current inventory you may wish to set some poles at C, D, & E on your personal chart based on their resistance stiffness within the R#. Based on the poles flex number, smaller number being stiffer and larger number being softer.
If you have a pole with an odd weight number round down for the resistance R#! Example 151=150/171=170
This chart has been tested in the field for many years and most recently compared to test done on a load cell.
Comparisons are estimates and user assumes all risks as pole vaulting is a sport that requires supervision.
experience, and following the rules at all times!
Eventually trainers will see the benefits and add a R# to their poles to help coaches and athletes to relate to the differences and comparisons.
A school could save money once they learn to buy or inventory poles in 10 lbs increments . There is info here to save your school money and help to progress your jumpers to greater safer heights . The highlighted 25 poles are the minimum a normal school must have to fit the most athletes
The weight rule is a guide to placing a vaulter on a pole that has the ability to support the weight of an athlete with a normal run. Athletes with better form and speed require a stiffer rated pole. The success of jumping over your hand grip is accomplished more efficiently if one uses a pole 10 lbs. to 25 lbs. rated over their weight. This way there may be an athlete who weighs as an example 130 lbs. and is on a pole that can recover or support a 150 lbs. person. The pole now has a greater chance of catapulting the center of gravity upward rather than forward. If the lift is timed or synced one can push 12" TO 36" over their top grip. The weight rule defends those who over-grip and move to a grip greater than they can jump and requires the use of a pole rated under their weight. Mostly pole jumpers, not pole-vaulters holding on 14' poles gripping 13'6" and jumping less than 12'. This means a vaulter who is holding 12'6" on a 14'-130 is gripping at a place where the resistance at the plant is too stiff for them and at about the same as a 150 lbs test pole. Moving to a 14-110 lbs pole now places a 130 lbs weight load on a pole that only has a wall thickness to oval and recovers at a weight rating of 110 lbs. Yes, again you are correct in saying an increase in speed and execution of the transfer of energy will yield a stiffer pole requirement and less speed or poor transfer skills (related to the plant) will need a softer pole. one can see this possibility in the Resistance chart.
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