You cant throw the 2nd punch until the 1st is coming back.Balisticly Rubber helps the process weights restrict motion.
And remember the punching speed and power doesn't really come from the arm, it's from the legs. No legs= no speed or power.
You use weights to create explosive muscles...why then does the same concept not apply to using handweights to shadowbox with, then without? Im not saying youre wrong, I just found it to be a proven method from experience...maybe youre right that the weights did just serve for psychological reasons.. Its also worth noting that nearly everyone punches faster without gloves than with gloves...thats because gloves have weight, yet we shadowbox without them. Perhaps shadowboxing with weights in effect is like shadowboxing with gloves...improving speed when you finally put them on.
As scrap has said the weight restricts the motion. It is not going to improve the speed of a contraction, only improving technique and fast twitch fibres can do that. The resistence when your punching does not come from gravity, the weights will just, at best, make your deltoids more enduring. Why don't olympic 100m runners train in space suits? Surely that way they'd be faster when they took them off. Its a falicy.... There is a word for the removal of weight during exercise and I can't for the life of me remember what it is. Its a psychological effect, its like if you wear ankle weights all day, when you take thm off you will be comparitively light footed but only as fast as you were before you put them on. Short spped punching drills on the bag and pads will do more to improve your top end speed then anything that can be managed when sadow boxing. Shadow boxing should be used primarily for dynamic streching, warm up and practicing techniques.
The trainer doesn't trap him with the pads like you assumed. The task of the boxer is to hit the pads as quickly as possible.
To me this is padwork, not the slappy crap Mayweather does. Whats the point of doing the same choreographed routine over and over and over? [ame]http://www.youtube.com/watch?v=1OwnHRKkhUo[/ame]