![]() The amount of stored elastic energy (sometimes referred to as ‘strain’ or ‘potential’ energy) is potentially equal to the applied force and induced deformation (5). When the band is stretched there is a build-up of stored energy, which when released causes the band to rapidly contract back to its original shape. The concept of elastic energy is similar to that of a stretched rubber band. Despite this large list, it is commonly agreed that there are three primary mechanics responsible for the performance enhancing effects of the SSC (2). There are numerous neurophysiological mechanisms thought to contribute to the SSC, some of which include: storage of elastic energy (18, 19, 20, 21), involuntary nervous processes (22, 23), active state (1, 24), length-tension characteristics (25, 26), pre-activity tension (27, 28) and enhanced motor coordination (1, 24). Mechanisms of the Stretch-Shortening Cycle (SSC) Whereas race walking, which has a ground contact time of 270-300 milliseconds is commonly classified as a slow-SSC movement (10). ![]() As displayed in Table 1, a long jump is typically classified as a fast-SSC movement as it has a ground contact time of 140-170 milliseconds (9). Table 1 provides some examples of common exercises and their potential SSC classification. Consequently, the SSC has been separated into two categories based upon the duration of the SSC: walking), there are great differences in the speed of the SSC. As some movements are much faster than others (e.g. As the limbs are continuously changing direction there is a constant use of the SSC in order to change the direction the limb is moving. For example, during walking, jumping, running, twisting or even lowering and then raising your arm. The SSC does not only occur during single-bout jumping or rebounding movements but also during any form of human movement when a limb changes direction.
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