Dear Anthony This is what I just wrote off-list to another sufferer:
I think they all work the same. Some have light, some have sound some even a counter, but neither light or sound affect the principle at work: a gyroscope giving the ball momentum. This makes the ball feel heavy in your hand, as if it has a life of its own. Keeping the gyroscope turning requires you to move your hand/wrist/fingers, and the pull of the ball on your hand can be quite strong. It's basicaly a wrist muscle workout, but not a static one. Mine has sound and no counter (PB-188S). I find a set of 'Chinese balls' to be a more gentle workout for the fingers (very relaxing while strengthening at the same time. It loosens up your fingers), but this leaves the wrist rather stiff. Good luck with your injury David -- ******************************* David van Ooijen [email protected] www.davidvanooijen.nl ******************************* To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
