Exclusion criteria: The usual consumption for any reason of alpha-beta-blocking agents, or alpha-beta agonists, or directly or indirectly vasodilator-vasoconstrictor action drugs of any kind, anticoagulants, topical or systemic steroids, presence of pacemakers or implantable defibrillator, smoking, high consumption of alcohol (>20g/week), presence of tattoos in the areas of measurement, and lower limb amputation