Adaptive control of center of mass (global) motion and its joint (local) origin in gait.

ABSTRACT: Dynamic gait stability can be quantified by the relationship of the motion state (i.e. the position and velocity) between the body center of mass (COM) and its base of support (BOS). Humans learn how to adaptively control stability by regulating the absolute COM motion state (i.e. its position and velocity) and/or by controlling the BOS (through stepping) in a predictable manner, or by doing both simultaneously following an external perturbation that disrupts their regular relationship. Post repeated-slip perturbation training, for instance, older adults learned to forward shift their COM position while walking with a reduced step length, hence reduced their likelihood of slip-induced falls. How and to what extent each individual joint influences such adaptive alterations is mostly unknown

SUBMITTER: Yang F 

PROVIDER: S-EPMC4184911 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature