Comparison of Module Quality and Walking Performance of Hemiparetic Subjects Pre and Post Locomotor Rehabilitation Therapy

In healthy subjects, electromyography (EMG) reveals that well-coordinated walking can be produced by exciting four co-activation modules: Module 1 (hip and knee extensors) in early stance, Module 2 (ankle plantarflexors) in late stance, Module 3 (tibialis anterior and rectus femoris) during swing, and Module 4 (hamstrings) in late swing and early stance [1]. These modules, comprised of timing and composition matrices that define muscle activity (Fig. 1), may reflect a neural strategy of co-activation through a reduced set of patterns.