Joe DeFranco Quote

These implements do have their time and place; I just don’t feel they should become the focus of an athlete’s training. The reason I say this is because in all of sports, it is the athlete that moves while the playing surface remains still. (The playing surface doesn’t move as the athlete tries to remain still!) True “functional” training should consist of applying resistance to an athlete while his/her feet are in contact with the ground. The athlete must then adapt to these forces. Also, if you’re always performing exercises on “unstable” devices, you will be limited in the amount of weight you can use. This will prevent you from overloading the prime movers of the exercise, which will limit how strong you can get.

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