... conditions are organized into top-down and bottom-up approaches, to work towards understanding function from isolated muscle to integrated movement. Unsteady locomotion Neuromechanics Muscle force production Tendon elasticity Closed loop feedback control Perturbation Army Research Office...

..., allowing both movement frequency and amplitude (hopping height) to vary freely. By providing real-time velocity feedback and a prescribed target level, we ensured that task demand remained constant across bouncing frequency. The calculated resonant frequency, at which tendon elasticity was optimally...

... the force potential of the muscle while running and therefore the volume of active muscle at a given force generation will decrease. * Author for correspondence (e-mail: Arampatzis@dshs-koeln.de ) 18 5 2006 © The Company of Biologists Limited 2006 2006 tendon elasticity tendon...