Frontal plane dynamics of the centre of mass during quadrupedal locomotion on a split-belt treadmill.

ABSTRACT: Our previous study of cat locomotion demonstrated that lateral displacements of the centre of mass (COM) were strikingly similar to those of human walking and resembled the behaviour of an inverted pendulum (Park et al. 2019 J. Exp. Biol.222, 14. (doi:10.1242/jeb.198648)). Here, we tested the hypothesis that frontal plane dynamics of quadrupedal locomotion are consistent with an inverted pendulum model. We developed a simple mathematical model of balance control in the frontal plane based on an inverted pendulum and compared model behaviour with that of four cats locomoting on a split-belt treadmill. The model accurately reproduced the lateral oscillations of cats' COM vertical projection. We inferred the effects of experimental perturbations on the limits of dynamic s

SUBMITTER: Latash EM 

PROVIDER: S-EPMC7536050 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature