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The NBA and NFL both make the players do this to measure their vertical jump:
You jump and slap the little bars. Makes sense, right? Except for when they publish your results, they all have measurements in the neighborhood of 38"-48"
That's way too low for it to be the measurements of the little bars they're touching. Those things are like 140" or higher.
What this means is that they must be measuring the players jump by the distance from the ground to their feet. This seems like a flawed way to measure though, because if I were an athlete and I wanted to ensure I get the highest draft position possible, then I would start practicing pointing my toes upward once I'm in the air. This could add several inches to my published vertical.
And if they started measuring from the heel, then I could bend my knees and lift my feet really high, which could add another foot or more to my vertical. Kind of like how guys do box jumps. The guy in the pic below gets his feet 64 inches off the ground.
So how would you measure vertical jumps? If you measure from the highest thing they can reach, then tall guys have an advantage even though they don't appear to be jumping that high. But if you measure from their feet, then the best leg-tuckers would win, even though someone else might jump higher but not be as flexible and quick at tucking their legs.
You jump and slap the little bars. Makes sense, right? Except for when they publish your results, they all have measurements in the neighborhood of 38"-48"
That's way too low for it to be the measurements of the little bars they're touching. Those things are like 140" or higher.
What this means is that they must be measuring the players jump by the distance from the ground to their feet. This seems like a flawed way to measure though, because if I were an athlete and I wanted to ensure I get the highest draft position possible, then I would start practicing pointing my toes upward once I'm in the air. This could add several inches to my published vertical.
And if they started measuring from the heel, then I could bend my knees and lift my feet really high, which could add another foot or more to my vertical. Kind of like how guys do box jumps. The guy in the pic below gets his feet 64 inches off the ground.
So how would you measure vertical jumps? If you measure from the highest thing they can reach, then tall guys have an advantage even though they don't appear to be jumping that high. But if you measure from their feet, then the best leg-tuckers would win, even though someone else might jump higher but not be as flexible and quick at tucking their legs.



