Journal ArticleDOI
Analysis of Fundamental Human Movement Patterns Through the Use of In-Depth Antagonistic Muscle Models
Jack M. Winters,Lawrence Stark +1 more
TLDR
A nonlinear eighth-order agonist-antagonist muscle model is identified, based on engineering analysis and design criteria, as the desired structure for the broad-range study of a variety of fundamental human joint movements as mentioned in this paper.Abstract:
A nonlinear eighth-order agonist-antagonist muscle model is identified, based on engineering analysis and design criteria, as the desired structure for the broad-range study of a variety of fundamental human joint movements. To complement this structure, systematic protocols, that combine material and geometrical information for each muscle, are developed to obtain the model parameter values needed for the various muscle constitutive equations. The parameters describing the four basic nonlinear relations are easy to visualize, representing the peak curve values and "shape" parameters. Elbow, knee, wrist, and ankle fiexion-extension and eye, wrist, and head rotation are simulated by this same model structure.read more
Citations
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Journal ArticleDOI
Adaptive fuzzy control of electrically stimulated muscles for arm movements.
TL;DR: A modified adaptive Takagi-Sugeno fuzzy logic controller (FLC) is proposed that allows a simulated elbow-like biomechanical system to accurately track sigmoidal and sinusoidal trajectories in the sagittal plane, a first effort towards the implementation of a system to restore elbow movements in quadriplegics using functional neuromuscular stimulation.
Journal ArticleDOI
Multilevel Validation of a Male Neck Finite Element Model With Active Musculature.
Jeffrey Barker,Duane S. Cronin +1 more
TL;DR: The contributions of soft tissues, neck curvature and muscle activation were associated with higher stiffness neck response, particularly for low severity frontal impact, and this led to improved evaluation of the model over the full loading history.
Journal ArticleDOI
Hill equation and Hatze's muscle activation dynamics complement each other: enhanced pharmacological and physiological interpretability of modelled activity-pCa curves.
TL;DR: This work proves that muscular activity-pCa curves described by the Hill equation and the equilibrium state predicted by Hatze's activation dynamics are equivalent, and derives and examines the complementary relation of both model approaches, highlight the benefits of mutually viewing one approach from the perspective of the other, and address the physiology behind sigmoidal curves.
Book ChapterDOI
Equilibria and dynamics of a neural network model for opponent muscle control
TL;DR: This chapter refine the FLETE circuit variables specification and update the equilibrium analysis, and incorporate additional neuronal circuitry that ensures efficient opponent force generation and velocity regulation during movement.
Journal ArticleDOI
Effect of active muscle forces on knee injury risks for pedestrian standing posture at low-speed impacts.
TL;DR: It is concluded that active muscle forces significantly affect the knee kinematics and consequently reduce strains in knee ligaments.
References
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Journal ArticleDOI
The heat of shortening and the dynamic constants of muscle
TL;DR: In this article, a more accurate and rapid technique for muscle heat measurement was proposed, and some astonishingly simple and accurate relations have been found, which determine the effect of load on speed of shortening, allow the form of the isometric contraction to be predicted, and are the basis of the so-called "visco-elasticity" of skeletal muscle.
Journal ArticleDOI
Data on the distribution of fibre types in thirty-six human muscles: An autopsy study
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Journal ArticleDOI
Dynamic properties of mammalian skeletal muscles.
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Journal ArticleDOI
A physiologically based criterion of muscle force prediction in locomotion
TL;DR: The inversely-nonlinear relationship of muscle contraction force and the possible contraction duration is utilized in a method to mathematically predict individual muscle forces and shows substantial agreement with that activity pattern predicted when endurance is used as the optimization criterion.
Journal ArticleDOI
Elasticity of soft tissues in simple elongation
TL;DR: A theoretical framework is presented in which the elastic properties of soft tissues can be described and it is shown that the mathematical formulation works well also in reducing published data on the series element of the heart and striated muscles, and the skin.
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