Fig. 1

Experimental setup. Linear actuator (a) pulls on cable attached to a weight lifter’s belt at the waist (b). The subject stands on force plates (c) and mantains balance by holding onto the instrumented handles attached to the fixed support structure (d). Vicon cameras (e) capture motion through markers attached to the legs and upper body (f). Accelerometer data processing and control are performed on a realtime target computer (off image)