Prakampitā (shaken) is to be used in the movement of hunchbacks, dwarfs, and persons of inferior stature. It is also applied in the movement of corpulent persons and women in playful gestures.
कम्पनं वलनं चैव स्तम्भनोद्वर्तने तथा । निवर्तनं च पञ्चैतान्यूरुकर्माणि कारयेत् ॥ २५२॥
Shaking (kampana), turning (valana), motionlessness (stambhana), springing up (udvartana), and turning round (nivartana)—these five are the movements (karmāṇi) of the thighs (ūru) to be employed [in dramatic performance].
Raising and lowering the heels again and again constitutes Kampana (shaking) of the thighs. When the knee moves inward during walking, it is called Valana (turning).
Stambhana (motionlessness) is to be understood as the act of suspending or halting movement. Udvartana (springing up) of the thighs is said to result from forceful turning or twisting (Valita and Āviddha actions).
When the heel moves inward, that is called Nivartana (turning back). Vibration (Kampana) is used in the movements of lowly persons and in situations of fear.