Ch. 1. Metabolic Energy Expenditure and Accuracy in Movement: Relation to Levels of Muscle and Cardiorespiratory Activation and the Sense of Effort / Nicholas J. O'Dwyer and Peter D. Neilson -- Ch. 2. Factors That Have Shaped Human Locomotor Structure and Behavior: The 'Joules' in the Crown / Aftab E. Patla and W. A. Sparrow -- Ch. 3. Movement Proficiency: Incorporating Task Demands and Constraints in Assessing Human Movement / Graham E. Caldwell, Richard E. A. van Emmerik and Joseph Hamill -- Ch. 4. Movement Economy, Preferred Modes, and Pacing / W. A. Sparrow, K. M. Hughes and A. P. Russell / [et al.] -- Ch. 5. Triggers for the Tansition Between Human Walking and Running / Alastair Hanna, Bruce Abernethy and Robert J. Neal / [et al.] -- Ch. 6. Learned Changes in Behavioral Efficiency: The Effects of Concurrent and Terminal Exteroceptive Feedback of Response Success / Jasper Brener and Scott Carnicom -- Ch. 7. Mechanical Power and Work in Human Movement / Vladimir M. Zatsiorsky and Robert J. Gregor -- Ch. 8. Optimisation in the Learning of Cyclical Actions / Bjorn Almasbakk, H. T. A. Whiting and Roland van den Tillaar -- Ch. 9. Dynamic and Thermodynamic Constraints and the Metabolic Cost of Locomotion / Kenneth G. Holt, Sergio T. Fonseca and John P. Obusek