A method of electrostimulation of a group of one or more target muscles of a subject and its associated apparatus is disclosed. The apparatus comprises a generator for generating a plurality of electrical pulses and means for applying the electrical pulses to the subject to induce contraction of at least one muscle of the subject, such as electrodes. In a first step, the generator is operable to apply a conditioning electrical pulse 204 having a duration of at least 0.5 milliseconds and an intensity below that effective in stimulating contraction of the target muscles. In a second step, the generator is operable to apply one or more stimulating electrical pulses 206a-c at an intensity sufficient to stimulate contraction of the target muscles. Also disclosed is a method and apparatus for electro-stimulation of muscle which utilizes a preliminary step of increasing the intensity of the electrical pulse in order to determine the motor threshold of the muscle. Preferably, the electro-stimulation is applied to the feet of a user to promote blood flow through the vasculature.
