A system for the acquisition and analysis of an individuals muscle activity is disclosed, comprising at least an electromyographic acquisition section (A) apt to acquire through respective sensors at least first electric signals of an individuals muscle group, a garment (1) belonging to said acquisition section (A), being provided with electrodes (2), a computer processor (6) furthermore having analysis and processing means (9) for the analysis and processing of the acquired signals, a user interface (12) through which to supply an output processed by said computer processor (6), a communication interface and at least one detection sensor of the individuals skin impedance. The computer processor further comprises a database (11) of deductive rules, while processing and analysis means (9) are provided with an expert system (10) in the shape of a computer system capable of reproducing the performances of one or more people experienced in a certain field of activity, comprising an inferential motor by which, to the data coming from the analysis and processing means (9), said deductive rules suitably stored in said database (11) are applied. The system also provides to use such a impedance value as correction parameter of the gain of said sensors of the electromyographic acquisition section (A).
