... is crucial in kinetic spring–mass analyses of running, where approximation of a runner's impact angle and calculation of leg stiffness require that input. Here, a new method is presented to approximate a runner's stance velocity via measurement of contact and flight times with the runner's average speed, leg...

.... COMPETING INTERESTS No competing interests declared. 15 1 2013 8 7 2013 © 2013. Published by The Company of Biologists Ltd 2013 avian locomotion spring-mass joint control biomechanics inverse dynamics joint stiffness When birds increase speed during terrestrial...

... observation emerging from studies of steady level locomotion is that simple spring-mass dynamics, which help to economize energy expenditure, also apply to stabilization of unsteady running. Spring-mass dynamics apply to conditions that involve lateral impulsive perturbations, sudden changes in terrain height...

...Justine J. Robilliard; Alan M. Wilson SUMMARY The spring-mass model is often used to describe bouncing gaits. Although at first inspection the mechanical system appears simple, the solution to the motion cannot be derived easily. An analytical solution would provide a fast and intuitive method...