BIODYNAMIC ANALYSIS OF THE VERTICAL JUMPING

Milan Čoh, Vujica Živković, Milan Žvan

In many sports, vertical and drop jumps are an important exercise resource in an athlete’s power training. This study was aimed to establish the main dynamic and kinematic parameters that generate the efficiency of squat jump, countermovement jump and drop jump, and to establish the EMG activation of leg and back muscles. In the experimental procedures, two elite athletes, triple jumpers, took part. M. gastrocnemius medialis is one of the most important muscles in the production of mechanical energy in the kinetic chain. This is a two-joint muscle and can transfer energy between its segments. One-joint muscles generate the initial mechanical energy for vertical jumps, whereas two-joint muscles control the intermuscular coordination and the final vertical impulse. In a drop jump from 25 cm the ankle joint sustains the highest loading, followed by the knee joint and the hip joint. Based on this information, the training process can be far more accurately programmed and controlled in terms of power.

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