Re: The secret to gaining VERTICAL
I disagree. The most important thing you need from your upperbody as a basketball player is your core and shoulders. Having a big chest actually limits your movement and being too strong doesn't give you a comfortable feel on an outside shot.
Most basketball players do resistance based training. It's not simply weight lifting with legs. Of course they hit the gym but you're not building a football player or a body builder. Basketball requires agility,conditioning, and vertical leap.
It may seem like some players are really built but it's actually because they have an extremely low body fat percentage.