Deuce,

one more thing I should add. The weight training has helped strengthen my arm a lot, but it's also a function of muscle memory... ie, developing the coordination to throw a good left hook or body shot or jab. This is another reason that some very strong people can't box, simply because they don't have the boxing coordination because they don't practise it.

Evender holyfield used a machine similar to mine but the movements were shorter and the loads actually the same if not even lighter. It's about the central nervous system just as much as it is the raw power.