Repository includes the GaitSym (version 2017) model files and associated bone geometry (.obj) files for the MDA models of Australopithecus afarensis and a human, as described in the above publication. Data is organised in the following publication: Bates, K.T., McCormack, S., Donald, E., Coatham, S., Brassey, C.A., Charles, J., O'Mahoney, T., van Bijlert, P.A. & Sellers, W.I. Running performance in Australopithecus afarensis.