منابع مشابه
Non-crossbridge stiffness in active muscle fibres.
Stretching of an activated skeletal muscle induces a transient tension increase followed by a period during which the tension remains elevated well above the isometric level at an almost constant value. This excess of tension in response to stretching has been called 'static tension' and attributed to an increase in fibre stiffness above the resting value, named 'static stiffness'. This observa...
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A stiffness control model for the stabilization of sway has been proposed recently. This paper discusses two inadequacies of the model: modeling and empiric consistency. First, we show that the in-phase relation between the trajectories of the center of pressure and the center of mass is determined by physics, not by control patterns. Second, we show that physiological values of stiffness of th...
متن کاملStiffness-distortion sarcomere model for muscle simulation.
A relatively simple method is presented for incorporating cross-bridge mechanisms into a muscle model. The method is based on representing force in a half sarcomere as the product of the stiffness of all parallel cross bridges and their average distortion. Differential equations for sarcomeric stiffness are derived from a three-state kinetic scheme for the cross-bridge cycle. Differential equat...
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Quantifying orofacial muscle stiffness using damped oscillation
Muscle stiffness can reflect muscle tone, often presumed to be aberrant in persons with dysarthria. This exploratory study used the Myoton-3 to assess stiffness of the lateral tongue and mid-cheek in 10 participants with various neurologic disorders--primarily lower motor neuron (n = 6), primarily upper motor neuron (n = 4), and neurolsgically normal adults (n = 4). The Myoton delivered a 25-ms...
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ژورنال
عنوان ژورنال: Theoretical and Applied Mechanics Letters
سال: 2012
ISSN: 2095-0349
DOI: 10.1063/2.1205301