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When executing a race at full speed with change-of-direction force components are highly involved. These components are being specifically trained through plyometric exercises, among others. Few studies evaluate on one side explosive and reactive strength (1,2) and their correlation with short change-of-direction sprints.Once analysed the evidences showed in some studies reviewed (3,4,5,6,7), our purpose is to determine the relationship between both explosive and reactive strength measures and short change-ofdirection sprints in order to find whether the countermovement jump (CMJ) force manifestation helps predicting the performance level during change-of-direction 90o acceleration sprints.

Relación entre el CMJ y cambios de dirección en deportes colectivos / Relationship between CMJ and change of direction in collective sports