We are interested in discovering how humans and other animals move, and why they move the way they do. We have three primary research foci: 1) in vivo muscle function; 2) the biomechanical determinants of locomotor energy cost; 3) locomotor optimization. We undertake basic research, both in humans and using a comparative approach. Our basic research informs clinical- and health-focused studies. We are particularly open to the possibilities that arise at the intersection of disciplines (e.g. in vivo muscle experiments and computational modelling).