Increasing vertical leap

[Jake Lawrance]

I read somewhere about jumpers knee being a risk of jump training. Ironically jumpers do not often get jumpers knee and instead it is found in people who do not jump enough.

For standing jump development I would easily say jump squats @20% of 1RM paired with repetitive sets if jumping w/ landing softly and then reacclerating into another jump, both one legged and two legged.

For run ups /reactive jumps I would practice all kinds of rebound jumps for all kinds of gains e.g. Step off a chair and rebound off the floor, forward jumping focusing on the rebound or simply standing on the spot rebounds. All these exercises have improved my jumps and sprint starts.

As you notice I'm trying to avoid all this percentage of calves, quads and what not as it is barely helpful for the original poster (but interesting non the least). Variation is most likely key to improving your jumping ability along with having your biomechanics analysed (I'm sure someone here could do that).