As a boxer you should train very explosive when you train with weights. Explosive strenght means that the body will accelerate to the greatest speed possible in the least time possible. Explosive strenght depends much on your body weight. The more you weigh, the more important is the explosive strenght in boxing. If you weigh less, you should focus a little more on speed.
It's not the maximal powerdevelopment that is the important, but the power that is produced after a very short time that increase the performance. For example, in 100 ms (milliseconds)a weightlifter will produce about 90000 pascal. A shot putter (I don't know what you call it in engelish, it's guys that trow heavy balls)produces about 100000 kp and a boxer makes about 60 000 pascal in 100 milliseconds.
This means that the maximal power/effect is achieved when both power and speed is about 1/3 of the maximal level. It's the fast fibers quality with it's ability to achieve high power in short time that is decisive for the explosive strenght.
When you train explosive you should use 70-85% of your maximum strenght with maximal velocity. 4-6 repetitions in 3-6 sets with 2-5 minutes rest in between.
Speed is also important. Then you should use about 40-70% of your maximul strenght with high velocity. 6-10 reps in 3-6 sets with 2-4 minutes rest in between.
Excuse my bad english. But the main thing is: work with speed and explosive strenght. I think that will improve your boxing.
