Leg weights

The idea of plyometric training is to develop elastic strength and provide a good training stimulus. Same idea goes for strength training on the whole.

High vertical jumps, long broad jumps, and generally good performance in jump tests ARE correletated to sprinting.

You can find fast guys out there who cant put up that much in the squat rack, but how many fast guys can you find that have shitty verts?
Practically every fast sprinter will have a pretty good vert at the very least, and approaching the top level, you’ll see some pretty exceptional verts as well.

Please show me this study btw?