Kip-up
A kip-up (also called a rising handspring, kick-up, Chinese get up, kick-to-stand, nip-up, flip-up, or carp skip-up) is an acrobatic move in which a person transitions from a supine, and less commonly, a prone position, to a standing position. It is used in activities such as breakdancing, gymnastics, martial arts, professional wrestling, and freerunning, and in action film fight sequences.
Not only does the kip-up require muscle activation and strength, but it also requires proper technique for successful completion. A practitioner must perform the preparation phase (initiation of movement until directly before flight), aerial phase (time spent in flight), and landing phase (time from touchdown of the meet to maintenance of balanced standing) using specific accelerations, angular velocities, and joint positions of the extremities in order to land on their feet.
Execution and physics
From a supine position
The performer draws both legs (which may be either in extension or flexion) anterior to the chest, rotates back onto the shoulders, and optionally places hands on the floor proximal to the ears. The performer then moves from hip and knee flexion to hip and knee extension while elevating the body away from the floor. The performer creates force against the ground by pushing off with the hands and simultaneously moving the elbows from flexion to extension.