Human movement has bcen the object of observation from prehistoric times, Evidence for that interest is illustrated by the number of monuments rock paintings and objects in places like Central Sahara, Egypt, Syria, Latin America, Ancient Hellas and Rome, Information about that can be found in the works of many scientists, cspecially in the report of E. Asmunsen. The author draws the bounds of this first stage of knowledge of motor activity from the invention of photography, realized by Meybridge, lRR7. The application of photography, chrono-photography and subsequen­ tly of the stroboscopic effect allows to objectify the research, and on that ground to reveal number of regularities in the kinematics of movement. A reliable knowledge of the nature of movements, i.e. of their dynamic structure was obtained at the end of the nineteenth century, with the experiments of Maray, 1886, who applied for the first time a method for direct registration of movcment during walking and running. This fact marks a new stage in the knowledge of movement, a transition from analysis of the visible form of the movements to the knowledge of its hidden nature. This view stage is also characterized by numerous attempts of physiologists, kinesiologists, anatomists and biomechanists, to reveal the processes and the phenomena occuring in the locomotory system, allowing the realization of movement. Independently of the fact that at the cnd of thc sixteenth century Galvany made his first experiments with muscles. according to Asmunsen. the first systematic investigation in vivo was done by Duchenne (1885). That was the beginning of the application of electromyography (EMG).