All those currents capable of causing a muscle or certain muscle fibers to contract take this name:
The first is almost never used in physiotherapy because of the distinct sensory effect that limits its tolerability, while the other two are quite successful in stimulating normally innervated muscles.
To represent an effective stimulus, the current must be sufficiently intense, the change in intensity must be rapid, and finally it must act for a certain time according to well-defined ratios.
For stimulation, an electrode connected to the positive pole (indifferent electrode) and a smaller electrode connected to the negative pole (active electrode) are usually used and placed on the motor point of the muscle to be treated. The duration of the pulse is chosen according to the patient’s tolerance, but for effective stimulation to be achieved there needs to be a clearly visible contraction.
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