Well, if you have the solidity of the ground in your hands, while letting another's force pass through you back into the ground, that could be considered an application of "ki" and "grounding". And it could also be considered a conditioned response. But I don't want to send this off into a "Non-Aikido" topic . . . .
. . . . and not implying that I can do any of this . . . (why am I here?)
*throws smoke bomb and vanishes*