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73 Muscular center: The muscular center is located visually, requesting the patient, for example, to perform an isometric contraction, the central area and the area felt as the larger felt area corresponds to the muscular center which is intended to be stimulated using Russian current. Contraindications in the use of the resource - patients suffering from muscular pain of unknown etiology. - patients suffering from severe muscular injuries. - patients with muscular dystrophia of any kind. - patients with significant cognitive alterations and incapable of providing feedback of intensity of current prescribed during the treatment. - patients with severe conduct cardiopathies. Selkowitz (1989) revised experimental evidence that suggest the effectiveness of the use of Russian current in the increase of muscular strength. The author concluded that there was sound evidence that showed the increase in muscular strength after training with Russian current, however, it is important to emphasize that according to the author, the increase in muscular strength achieved through training with the current was not higher than the increase through training using voluntary exercises or a combination of the two techniques, namely voluntary exercise and Russian current. Some therapeutic conditions do not allow for the use of kinesiotherapy using restricted movement. Thus, a therapeutic strategy to be used would be the use of the muscular contraction induced by Russian Stimulation. Patients in post surgical cases of lesions of the osteomioarticular system, central and peripheral neurological lesions, after esthetic surgical procedures such as lipoaspiration are possible candidates to be subject to traninig sessions using Russian current. Delitto et al. (1989), compare the increase in muscular strength caused by electrical stimulation using Russian current with the gains produced by voluntary exercise in patients subject to reconstruction surgery of the anterior crossed ligament. According to the authors, the group subject to training with Russian current presented greater muscular strength gains when compared with the group trained voluntarily. SNYDER-MACKLER et al. (1989), compared the maximum torque values electrically induced through the 3 currents: Russian, interferential at 4kHz and a pulsed biphasic and low frequency current. The highest torque produces was attributed to Russian current, however, the difference was not statistically significant when compared with low frequency current. Já Ward & Robertson, (1998), compared the maximum torques generated electrically by modulated currents at 50Hz with frequency ranges varying between 1 and 15kHz. The maximum generated torque was obtained when the frequency at 1kHz in this experiment was useby the authors without pulsed monophasic and low frequency currents for comparison. The limitation of the study occurred when direct comparisons with Russian current were not made. Manual de Operação - NEURODYN V2.0 5 a edição (07/2009)