Calculate Center of Mass position from Ground Reaction Forces

Inputs

GRF - Ground reaction force (N) from single forceplate. NB: In case of multiple forceplates e.g. split-belt treadmill, combine the 2 GRFs to a single GRF, for more info see Kwon3D: http://www.kwon3d.com/theory/grf/multi.html

Cop - Center of pressure (m) from single forceplate. NB: In case of multiple forceplates e.g. split-belt treadmill, combine the 2 Cops to a single Cop, for more info see Kwon3D: http://www.kwon3d.com/theory/grf/multi.html

Time - Time array corresponding to the GRF and Cop vector.

sf - Sample frequency (Hz)

Weight - Subject weight (kg)

Output

Com - Mediolateral center of mass position

Originally written by Tom J.W. Buurke (2017)

Department of Human Movement Sciences, University Medical Center Groningen, University of Groningen, The Netherlands

Department of Movement Sciences, KU Leuven, Leuven, Belgium

Version 1.0 - Changelog (August 15 2017):

First version

Version 1.1 - Changelog (January 5 2022):

Cleaned up for publication