I have incorporated some sets with X-reps in shock week. Example is squats - I go all the way down, rise about half way up, go back down and then a full ROM rep. So you in effect do 1-1/2 reps - stopping so there is no bounce at the bottom. I use this technique for curls, OH DB press, BB bench press, etc. It is a variation of 21's that I used in high school.