Impulsive ankle push-off powers leg swing in human walking
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چکیده
منابع مشابه
Impulsive ankle push-off powers leg swing in human walking.
Rapid unloading and a peak in power output of the ankle joint have been widely observed during push-off in human walking. Model-based studies hypothesize that this push-off causes redirection of the body center of mass just before touch-down of the leading leg. Other research suggests that work done by the ankle extensors provides kinetic energy for the initiation of swing. Also, muscle work is...
متن کاملA unified perspective on ankle push-off in human walking.
Muscle-tendon units about the ankle joint generate a burst of positive power during the step-to-step transition in human walking, termed ankle push-off, but there is no scientific consensus on its functional role. A central question embodied in the biomechanics literature is: does ankle push-off primarily contribute to leg swing, or to center of mass (COM) acceleration? This question has been d...
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In biomechanics, explanatory template models are used to identify the basic mechanisms of human locomotion. However, model predictions often lack verification in a realistic environment. We present a method that uses template model mechanics as a blueprint for a bipedal robot and a corresponding computer simulation. The hypotheses derived from template model studies concerning the function of h...
متن کاملD:/My Work/Documentary/Paper/LS_POW/POW_20131111/POW.dvi
© 2013. Published by The Company of Biologists Ltd Impulsive ankle push-off powers leg swing in human walking Susanne W. Lipfert, Michael Günther, Daniel Renjewski, Andre Seyfarth Human Motion Engineering, 5021 SW Philomath Blvd, Corvallis, OR, 97333 USA Institut für Sportund Bewegungswissenschaft, Universität Stuttgart, Allmandring 28, D-70569 Stuttgart, Deutschland Institut für Sportwissensch...
متن کاملProsthetic ankle push-off work reduces metabolic rate but not collision work in non-amputee walking
Individuals with unilateral below-knee amputation expend more energy than non-amputees during walking and exhibit reduced push-off work and increased hip work in the affected limb. Simple dynamic models of walking suggest a possible solution, predicting that increasing prosthetic ankle push-off should decrease leading limb collision, thereby reducing overall energy requirements. We conducted a ...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2014
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.107391