Isokinetic exercises are often used in rehabilitative settings because the speed of the movement and the range of motion are controlled. An athlete can also use isokinetic exercises to enhance performance by exercising at speeds that are specific to a particular sport. For example, soccer requires the rapid extension of the lower leg during the kicking motion. Isokinetic exercises that challenge the quadriceps muscle to contract maximally and at a high speed can improve the power of a kick. Can you see how the training principle of specificity is applied to this example?
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