Id say that if your in competitive martial arts such as taekwondo or brazilian jujitsu or judo where the levels are differentiated by competitor weights, you should ideally devise a routine characterized by basic powerlifts and olympic lifts. I guess a lot of judo movements require rapid changing of center of gravity like the olympic lifts and speed strength. I guess it really varies.
If you do something like taekwondo or kickboxing you would be better served by doing plyometrics. But for somethign like BJJ or Judo a combination of powerlifts and olympic lifts would do you the most good. But for both categories your goal should be to have the lowest body fat percentage possible so you could get the maximum possible efficiency out of your given weight.
