Stone et al.,  ). The importance of the force is well reflected  Zyflex  the previous editions of the Musical School, Haikairainen and Rytkönen , and a brief quotation from  Zyflex

it is worth repeating: "Without the power, the long jumper does not jump to anything, the weightlifter does not catch a kilo, the marathon does not move a mile or an office worker can not get up from the bench. Without muscular power there is no life ! " Power can be divided into several categories .  Zyflex  addition to the aforementioned maximum power, they are speed and durability.

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