TY - GEN AU - Martinez-Villalpando,Ernesto C AU - Herr,Hugh TI - Agonist-antagonist active knee prosthesis: a preliminary study in level-ground walking SN - 1938-1352 PY - 2009///1116 KW - Biomechanical Phenomena KW - Electrophysiological Phenomena KW - Humans KW - Knee Prosthesis KW - Prosthesis Design KW - Walking N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S ER -