Exploration of different classes of metrics to characterize motor variability during repetitive symmetric and asymmetric lifting tasks.

ABSTRACT: The substantial kinematic degrees-of-freedom available in human movement lead to inherent variations in a repetitive movement, or motor variability (MV). Growing evidence suggests that characterizing MV permits a better understanding of potential injury mechanisms. Several diverse methods, though, have been used to quantify MV, but limited evidence exists regarding the merits of these methods in the occupational context. In this work, we explored different classes of methods for characterizing MV during symmetric and asymmetric box lifting tasks. Kinematic MV of both the whole-body center-of-mass (COM) and the box were quantified, using metrics derived from a linear method (Standard Deviation), a non-linear method (Sample Entropy; an index of movement regularity), and a novel application o

SUBMITTER: Sedighi A 

PROVIDER: S-EPMC6614496 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature