Bodybuilders try to isolate each muscle when they work out. This is important if your trying to build a symetrical body and have to fix lagging bodyparts. Unfortunetly this also tends to make it harder to use your entire body when striking.If you work out using whole body lifts ie, deadlifts, cleans, squats etc. You will gain quite a bit of functional strength. Another problem is the speed at which bodybuilding exercises are done. Btw Mark Kerr and others are huge because they have a pharmacy running through there veins, even though they are tested some drugs can be taken up to the day before a test and you will still pass it. They test the mr.olympia winners and they pass aswell but who are they fooling