What Does Countermovement Jump Measure

The Countermovement Jump (CMJ) is a vertical jump test performed by having an athlete quickly squat to a self-selected depth and then jump as high as possible. It is the first jump in our force plate assessment and is used to both determine lower body power via jump height and to measure lower limb asymmetries.

What is a countermovement squat jump?

A countermovement at its most simplest form is a downward action followed by a reciprocal upward action. In this case, it would be the lengthening of certain muscles as the athlete begins to lower down pre-jump.

What is a countermovement jump vs squat jump?

Although a larger difference may reflect the utilization of elastic energy in a small amplitude countermovement jump as a result of a well-developed capability to co-activate muscles and quickly buildup stimulation, a larger difference may also reflect a poor capability to reduce the degree of muscle slack and buildup …