Arndt, A., Wolf, P., Nester, C., Liu, A., Jones, R., Howard, D., …Lundberg, A. (2006). Intrinsic foot motion measured in vivo during barefoot running. Journal of Biomechanics, 39(Supp.1), S182. https://doi.org/10.1016/S0021-9290%2806%2983644-4