The difference between the counter movement and non counter movement jump

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Nick Winkelman

It is well established in literature, that the use of a countermovement jump (CMJ) will result in a higher vertical jump, when compared to a non-countermovement jump (NCMJ), (often referred to as a squat jump or static jump).While this point is not disputed by researchers, there is much debate on the neuromuscular and mechanical mechanism(s). At the centre of this argument lies the understanding of the Stretch-Shortening Cycle (SSC). The SSC can be defined as a rapid eccentric (stretch) muscle action, followed immediately by a concentric (shortening) muscle action.

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