B.Sc. (Honours), University of Waterloo, 1978; M.Sc., University of Waterloo, 1980; Ph.D., Simon Fraser University, 1987
Area(s) of Specialization:
Biomechanics, Muscle Mechanics, Musculoskeletal Modeling
My research investigates the kinematics and kinetics of human movement, using experimental data techniques such as 3D motion capture, force measurement and electromyography in conjunction with computer muscle models. A main focus of my research is to examine how muscular properties influence movement patterns. To that end I use musculoskeletal and forward dynamics models to study optimal movement patterns and task-specific muscle synergism. Current projects include the effect of age-related changes in muscular properties on balance, coordination changes while learning to direct external forces, and limitations on maximal sprinting speed.
Miller, R.M., Umberger, B.R. and G.E. Caldwell (2012). Sensitivity of maximum sprinting speed to characteristic parameters of the muscle force-velocity relationship. Journal of Biomechanics, 45, 1406–1413. doi: 10.1016/j.jbiomech.2012.02.024.
Miller, R.M., Umberger, B.R., Hamill, J. and G.E. Caldwell (2012). Evaluation of the minimum energy hypothesis and other potential optimality criteria for human running. Proceedings of the Royal Society of London B, 279 (1733): 1498-1505. doi: 10.1098/rspb.2011.2015.
Miller, R.M., Umberger, B.R. and G.E. Caldwell (2012). Limitations to maximum sprinting speed imposed by muscle mechanical properties. Journal of Biomechanics, 45(6):1092-1097. doi:10.1016/j.jbiomech.2011.04.040.
Hasson, C.J., Caldwell, G.E. and R.E.A. van Emmerik. (2009). Scaling of plantarflexor muscle activity and postural time-to-contact in response to upper-body perturbations in young and older adults. Experimental Brain Research, 196 (3): 413-427.
Hasson, C.J., Caldwell, G.E. and R.E.A. van Emmerik (2008). Changes in muscle and joint coordination in learning to direct forces. Human Movement Science, 27: 590-609. doi:10.1016/j.humov.2008.02.015.