Originally Posted by Perseus
I disagree, as long as you are weight lifting for explosiveness it will work. Everytime you start a rep, you start from zero not as a recoil from the previous rep.
Pin presses are an amazing example of training your fast twitch reflex muscles. You place a bench inside a squat rack with the safety bars set right above your chest. The bar rests on the safety bar. I would start @ 25% of max weight just to get used to it, then move up as necessary. Lay on the bench and do a bench press but explode up with it and lower it back to the rack slowly. Repeat. This works the starting point of a punch which is where the explosive part comes from. You can do these for other lifting exercises to build explosiveness.
Sorry I did not make myself clear on the point. Weightlifting in general is about lifting very heavy objects in order to condition muscles to be much stronger. My bad since I did not mention the heavy lifting thing you noted. But yes, I meant the same about weightlifting, if you do specific excercises with little amounts of weight that can work out ok. Lying on a rack and lifting 250lbs wont help with it.