Synergistic Structure in the Speed Dependent Modulation of Muscle Activity in Human Walking.

ABSTRACT: Recently, a modular organisation has been proposed to simplify control of the large number of muscles involved in human walking. Although previous research indicates that a single set of modular activation patterns can account for muscle activity at different speeds, these studies only provide indirect evidence for the idea that speed regulation in human walking is under modular control. Here, a more direct approach was taken to assess the synergistic structure that underlies speed regulation, by isolating speed effects through the construction of gain functions that represent the linear relation between speed and amplitude for each point in the time-normalized gait cycle. The activity of 13 muscles in 13 participants was measured at 4 speeds (0.69, 1.00, 1.31, and 1.61 ms(-1)) during trea

SUBMITTER: Buurke TJ 

PROVIDER: S-EPMC4818091 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature