On Tuesday, though, James and Nike were very much on the same page, showing off the new, neon-colored LeBron 12, engineered with a hexagonal sole in place of the waffle pattern that defined Nike's early running shoes.
"The new technology is lightweight," James said. "It allows me to explode. When I'm landing it allows me to absorb the landing."
Nike said a player landing after a 32-inch vertical leap (James has a 40-inch vertical) can create force 10 times that of the athlete's body weight. The company boasts that its hexagonal pattern, on a sole composed of air and fiber, distributes that impact.
http://www.oregonlive.com/playbooks-pro ... james.html
When I started working with Michael Jordan in 1989, his vertical jump was 38 inches. By today’s standards, that might not even get you drafted in the top ten; Andrew Wiggins reportedly had a 44” vertical jump before he was drafted No. 1 overall in the 2014 NBA Draft. Eventually we got MJ up to 42”—and then 48”—using the training program which later became my book JUMP ATTACK. But we weren’t specifically training for vertical jump; we trained for overall explosiveness and skill, and the vertical increase was just a by-product of the training.
http://www.si.com/edge/2014/10/16/tim-g ... snt-enough
Although I find it hard to believe Jordan's vertical went UP in the 90's.