The high cost of swing leg circumduction during human walking
نویسندگان
چکیده
منابع مشابه
A determinant of the leg swing trajectory during walking
When we walk, there are infinite number of possible trajectories for leg swing. How does the brain design the trajectory? As a candidate for the strategy of the trajectory selection, we assessed the criterion of the minimization of the energy cost in this study. We computed the optimal leg trajectory that minimizes the energy cost during the swing phase under the boundary condition that enables...
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To investigate the metabolic cost and muscular actions required for the initiation and propagation of leg swing, we applied a novel combination of external forces to subjects walking on a treadmill. We applied a forward pulling force at each foot to assist leg swing, a constant forward pulling force at the waist to provide center of mass propulsion, and a combination of these foot and waist for...
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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...
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We compared two hypothesized energetic costs for swinging the human leg quickly. The first cost is to perform mechanical work on the leg, and the second is to produce muscle force cyclically at high frequencies. Substantial metabolic energy is expended to perform isolated leg swinging, especially at rates greater than the leg's natural pendular frequency. To determine whether the production of ...
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ژورنال
عنوان ژورنال: Gait & Posture
سال: 2017
ISSN: 0966-6362
DOI: 10.1016/j.gaitpost.2017.03.021