Electrical Stimulation vs. Static Stretching in the Leg Muscles

A passive static stretch of the posterior leg muscles will be performed with the subject in a supine position and knees extended, starting with the ankle at 90º and continuing until reaching the maximum tolerated dorsiflexion.

The intervention will be performed with the subject in a supine position with knees extended. Electrodes will be placed on the gastrocnemius muscles of the leg being assessed. The parameters will be selected. Static stretching will begin until resistance is felt, at which point the intensity of the electrical current will be increased to induce a visible and tolerable contraction. Simultaneously, the subject will be asked to perform an isometric contraction of the antagonist muscles, resisted by the investigator. When the subject feels the stretch again, the intensity of the current will be increased once more until a new movement barrier is reached.