Individual limb work does not explain the greater metabolic cost of walking in elderly adults
Elderly adults consume more metabolic energy during walking than young adults. Our study tested the hypothesis that elderly adults cons...
Independent metabolic costs of supporting body weight and accelerating body mass during walking
The metabolic cost of walking is determined by many mechanical tasks, but the individual contribution of each task remains unclear. We ...
Human hopping on very soft elastic surfaces: implications for muscle pre-stretch and elastic energy storage in locomotion
During hopping in place and running, humans maintain similar center of mass dynamics by precisely adjusting leg mechanics to compensate...
Human hopping on damped surfaces: strategies for adjusting leg mechanics
Fast-moving legged animals bounce along the ground with spring-like legs and agilely traverse variable terrain. Previous research has s...
Human hoppers compensate for simultaneous changes in surface compression and damping
On a range of elastic and damped surfaces, human hoppers and runners adjust leg mechanics to maintain similar spring-like mechanics of ...
How animals move: an integrative view
Recent advances in integrative studies of locomotion have revealed several general principles. Energy storage and exchange mechanisms d...
Regulation of stiffness by skeletomotor reflexes
Since the early 1950s when Merton introduced his 'follow-up serco hypothesis' of movement control, the dominant optinion has held that ...
Determinants of the center of mass trajectory in human walking and running
Walking is often modeled as an inverted pendulum system in which the center of mass vaults over the rigid stance limb. Running is model...
Hopping frequency in humans: a test of how springs set stride frequency in bouncing gaits
The storage and recovery of elastic energy in muscle-tendon springs is important in running, hopping, trotting, and galloping. We hypot...
Energetics of walking and running: insights from simulated reduced-gravity experiments
On Earth, a person uses about one-half as much energy to walk a mile as to run a mile. On another planet with lower gravity, would walk...