title: [Clinical value of studying strength-duration curves using intramuscular (needle) electrodes in patients with lumbosacral radicular syndromes].
abstract: The paper deals with the results of a force-duration curve comparative study which was accomplished-in 20 patients with the aid of usual skin and acupunctural point electrodes. The spicular needle introduced painlessly into the muscles studied, served as an active electrode connected by a fine cord to a clamp of the electric pulser. In order to determine the force-duration curve, 10 rectangular impulses of a different length at a constant frequency of 1 hz were used. The results demonstrated that the determination of the force-duration curve with the aid of acupuncture is a more sensitive and precise method of study inasmuch as it permits to receive genuine values of the current in the test area.
mesh_terms: D000328:Adult; D006801:Humans; D008159:Lumbar Vertebrae; D008875:Middle Aged; D009119:Muscle Contraction; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000209:etiology; D012447:Sacrum; D013122:Spinal Diseases / Q000150:complications; D013126:Spinal Nerve Roots; D013577:Syndrome; D013997:Time Factors
vernacular_title: Klinicheskoe znachenie issledovaniia krivoĭ sily--dlitel'nosti s pomoshch'iu vnutrimyshechnykh (igol'chatykh) élektrodov u bol'nykh s poiasnichno-krestsovymi sindromami.