1. A device containing positive and negative electrodes for supplying an electric stimulus (stimulating effect) to a nerve innervating the opposite muscles of the patient’s legs to cause isometric muscle contraction； power supply connected to the electrodes； and control means for activating the electrodes, wherein the device comprises a flexible substrate on which electrodes are mounted, a power source and a control means. The device according to claim 1, wherein the positive electrode is larger than the negative electrode. The device according to claim 1, wherein the substrate is in the form of an elongated strip or lobe, with electrodes spaced along the strip. A method of attenuating peripheral vascular resistance in a patient’s leg or weakening or preventing diastolic flow reversal in an artery in a patient’s leg, comprising the step of applying one or more electrical stimuli to a plurality of leg muscles sufficient to induce isometric muscle contraction, wherein, optionally, a method intended for the treatment of diseases characterized by increased peripheral vascular resistance. 5. The method according to claim 4, in which the disease is selected from the group consisting of a disease of arterial vessels of the lower extremities (peripheral arterial disease)； disorders of lymphatic drainage of the lower extremities； heart disease restless legs syndrome (Wittmaak-Ekbom syndrome)； damage to the soft tissues of the lower limb (including damage and microcracks of the skin and muscles； and sports injuries)； and inflammation. 6. A method for the diagnosis of diseases characterized by1. Устройство, содержащее положительный и отрицательный электроды для подачи электрического стимула (стимулирующего воздействия) к нерву, иннервирующему противоположные мышцы ноги пациента, чтобы вызвать изометрическое сокращение мышц； источник питания, подключаемый к электродам； и средство управления для активизации электродов, при этом устройство содержит гибкую подложку, на которой уст
