%0 Journal Article
%T An Experimental Study of Muscle Coordination and Function during Human Locomotion
%A Inoue Keita
%A Iimura Taiki
%A Oku Takanori
%A Pham Hang T.T.
%J BIO Web of Conferences
%D 2011
%I 
%R 10.1051/bioconf/20110100040
%X How humans solve the ill-posed problem of motor control is still a mystery. In this paper, we attempt to decompose human walking and running as the main movements of a leg into units of motor function. We introduce the key concept of ¡°A-A ratio,¡± de ned as the ratio of an extensor muscle¡¯s electromyography (EMG) signal to the sum of agonist and antagonist muscles¡¯ EMG signals. Human walking and running are then decomposed into two units of motor function by applying Principal Component Analysis (PCA) to the A-A ratio dataset. The kinematic meanings of these units are also experimentally shown by using a human-like musculoskeletal leg robot.
%U http://dx.doi.org/10.1051/bioconf/20110100040