Someone sent me the first video, and then I found the other video of the same athlete lifting very heavy squats and deadlifts. As I preach constantly, you have to have a base of strength before speed or jumping ability improves. This athlete has massive jumping ability, because he is extremely strong compared to his bodyweight, we call this power to weight ratio.
Build strength first, then worry about sprint/jumping technique. Without the strength it is like a hybrid car racing a nascar, all the driving technique in the world isn't going to make up for the lack of engine power output.
