Economy, Movement Dynamics, and Muscle Activity of Human Walking at Different Speeds.

ABSTRACT: The complex behaviour of human walking with respect to movement variability, economy and muscle activity is speed dependent. It is well known that a U-shaped relationship between walking speed and economy exists. However, it is an open question if the movement dynamics of joint angles and centre of mass and muscle activation strategy also exhibit a U-shaped relationship with walking speed. We investigated the dynamics of joint angle trajectories and the centre of mass accelerations at five different speeds ranging from 20 to 180% of the predicted preferred speed (based on Froude speed) in twelve healthy males. The muscle activation strategy and walking economy were also assessed. The movement dynamics was investigated using a combination of the largest Lyapunov exponent and correlation dim

SUBMITTER: Raffalt PC 

PROVIDER: S-EPMC5341064 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature