An exercising method and apparatus for use in the treatment of paralyzed muscles. The method and apparatus make use of a set of transcutaneous electrodes which are placed upon the skin of the subject over muscles which are to be stimulated. A computer controlled stimulator generates a pair of alternately...http://www.google.es/patents/US4556214?utm_source=gb-gplus-sharePatente US4556214 - Method and apparatus for exercising