In trampolining, a kip is a skill in which a supporter adds or removes lift to the performer's bounce by pressing on the trampoline bed to apply weight just before or after the performer makes contact with the bed.[1] The term kipping is sometimes used only for the technique that adds additional height by applying weight before the performer lands and removing the weight when the performer has depressed the bed, with the term killing used to distinguish the technique that applies pressure after the performer lands to lessen the bounce.[2]
A kip is mostly used by coaches while helping performers develop new skills. In such circumstances, an experienced coach will either stand, or bounce, alongside the performer and by timing their actions in the bed, they will be able to either increase, decrease, or simply stabilize the level of bounce experienced by the performer.[3]
The kip action itself occurs while the coach is in contact with the trampoline bed; they will bend their knees and then depress the bed downwards either:
Although strongly discouraged in competitive trampoline clubs for safety reasons, the kipping action is used in a number of games played on trampolines such as "crack the egg."