Let's have a discussion about stability ball training:
"Today's training tip comes from Christian Thibaudeau:
Functional vs. "Functional"
With functional training we want to improve the capacity of the nervous system to solve motor tasks, so we need to use strength training exercises that are complex. Multi-joint exercises such as squats, deadlifts, presses, cleans, snatches, and chins are all prime choices. Some stability ball lovers will argue that unstable exercises are good for functional improvements. It's true that they're complex, however, since the potential of these exercises for strength, strength-speed and speed-strength improvement is very low, I don't consider them to be functional training in its truest sense."
I'm not a fan of the stability ball and think it is a highly overrated piece of equipment. But, there are others who think that it's a very useful training device.
What says the T-Nation elect on the subject?