How can I improve my vertical?

[Lee33]

i am 5"7 135 pounds and i have a 20 inch vertical and im trying to improve that for basketball and football. what can I do to improve that. thanks

[Lakers46]

http://forum.bodybuilding.com/showth...hp?t=127818593 - Explosive Edge Sports thread.
http://forum.bodybuilding.com/showth...#post556033433
http://forum.bodybuilding.com/showth...hp?t=127123573 - Time Under Tension Training, this was started talking about hypertrophy, but I know many trainers have used it as a way to measure power and to increase overall strength (taking a submaximal load and decreasing the amount of time it takes to lift that load).
http://forum.bodybuilding.com/showth...hp?t=126707603
http://forum.bodybuilding.com/showth...hp?t=127329093
http://forum.bodybuilding.com/showthread.php?t=786782
Also check out the 'stickied' Sports Training 101.

This was a thread that was dropped earlier with some links to other threads on here.
Way too general of a question to just ask what u can do to improve vert or speed. Keep it simple I guess, get in the weight room, follow a program and stick to it. There's a huge thread that's stickied about vert jump training look there, if you have specific questions ask. Defranco's programs might be a good place to start since you play bball and football. Learn and take in as much as you can.

[Badname]

There is a sticky that you can read on vert training.