As introduced in the preliminary study previously carried out, the spread of technology in sports provides a monitoring of objective activity, accurate and not invasive. This led to the creation of a technological instrument, Power Glove, which investigates specific aspects of sport performance. The aim of this study is to evaluate the difference of serve performances through a test, to establish its feasibility and to obtain information that will allow to determine the calibration of the final instrument, taking into account the metrological characteristics of a measuring instrument. The carried out test, considers the serve, one of the fundamentals of volleyball, which starts ay every action of the game. The study was conducted on a sample divided into two groups: group A composed of 12 female volleyball players aged 12-16 years; and group B composed of 10 female volleyball players aged 18-25 years. It is a controlled and designed clinical study method in which subjects are exposed to various tests of strength, speed and precision in an alternated or simultaneous and supervised manner.
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