Often once you buy your gloves you are getting serious about training
and doing well. Building strength along with your boxing program is
very important.
MMA Workout Error #1 - Strictly Training The Mirror Muscles.
To build strength you need to diversify and not just work opposing muscles when you are weight training.
You
may get strong, but can you do chin ups? You need to diversity and do
quality pulling exercise. You also need very strong glutes for
extending and rolling those hips over for kicks.
There is a
program geared toward MMA Strength and Conditioning that focusing on
the underdeveloped muscles and works on MMA strength. It is called Shamrock Conditioning...
Just by reading their site you can pick up some more tips.