Muscle Synergies for Turning During Human Walking.
Muscle synergy describes reduced set of functional muscle co-activation patterns. We aimed to identify muscle synergies of turning compared with straight walking. Twelve healthy adults (men: 7, women: 5) performed straight walking (SW), left turning (LT), and right turning (RT) at self-selected speeds. By using non-negative matrix factorization (NMF), we extracted muscle synergies from sixteen electromyography (EMG) signals on the right side and assigned similar muscle synergies among SW, LT, and RT into the same cluster by combining k-means clustering and intraclass correlation coefficient (ICC) analysis. We obtained task-specific clusters of muscle synergies extracted from SW, LT, or RT condition and identified the clusters that share synergies among the conditions. The central nervous system produces specific synergies involving turning behaviors and fundamental synergies for walking.
['Choi|Yoonjin|Y|', 'Kim|Yushin|Y|', 'Kim|Minhee|M|', 'Yoon|BumChul|B|']
D000328:Adult D001696:Biomechanical Phenomena D004576:Electromyography D005260:Female D006801:Humans D008297:Male D018482:Muscle, Skeletal D016138:Walking
synergy non-negative matrix factorization electromyography curvilinear walking