Our phrase “waving the hands in the air and jumping about unthinkingly,” is an exppression of highest delight. From the earliest days, when people prayed, they would stamp rhythmically (Ashibyōshi). Their purpose was the movement of stamping itself and not the sound they make. The most ancient records of stamping in dance are found in old religious myths. In the story of the Heavenly Stone Door, the great Sun Goddess, Amaterasu is hidden in a cave and the world has been cast into darkness. To bring her out, Ame no Uzume, carrying a sakaki branch, stamps a dance on an overturned bucket, and this was the first Ashibyōshi.
(page 137)