Ignacio Jaramillo (Nacho_mx) wrote:
Atemi is important because when we first start learning the techniques both uke and nage usually begin in a static position (katatetori, katatori) and with proper atemi you can "jumpstart" and set things in motion so you can induce kuzushi.
I generally agree with Ignacio, except for the above point.
There are ways to generate movement from a static position - we develop it while practicing a balance breaking exercise called nanahon no kuzushi. It works basically from katatetori (aigamae and gyakugamae) and kouhou ryote dori, but the principle can be applied to any sort of grasping attack. If I find some web links on it I'll place it here.