A system for training and sports competitions comprises: one or more delimiting elements (2) suitable for being positioned, according to a desired settable spatial distribution, in a training or sports competition area (A) in which one or more sports users (S) have to move during a training session or sports competition, the delimiting elements (2) are each provided with a signalling unit (3) configured for emitting a signal (L), indicating a command or information, which is perceivable by a sports user (S) during a training session/sports competition, a remote management and control unit (U) configured for activating/deactivating and varying, during the training session/sports competition, the signal of each signalling unit (3) selectively and independently of the other signalling units, on the basis of certain training sessions/sports competitions that are preset and selectable by a coach (M).
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