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Experimental setup (A) and test conditions (B) used for the studies. (A) The subject was supine with the ankle strapped in the isokinetic ergometer (1). A shear measurement was recorded by the ultrasonic transducer (2) during a passive dorsiflexion with a surface electromyographic activity (3) monitored at the same time. (B). Two test conditions were used: a knee extended (experiment 1) and a knee flexed (experiment 2).
