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
Thorax Dynamic Modeling and Biomechanical Analysis of Chest Breathing in Supine Lying Position.
TL;DR: A finite element (FE) model of chest breathing based on the HUMOS2 human body model was developed, and the mechanism of the coupled motion of the chest and abdomen were analyzed, revealing that the movement of the rib cage may cause the abdominal wall muscles to be stretched in both horizontal and vertical in a supine position.
A Study of Muscle Activation in a Mathematical Model of the Human Head and Neck
Janet Brelin-Fornari,A. Arabyan +1 more
Proceedings ArticleDOI
Does passive bi-articular coupling of joint moments in the lower extremity of paraplegics differ from normal persons?
TL;DR: This study investigated the bi-articular coupling in two representative paraplegic patients and showed characteristic differences for which pathophysiologically based explanations are offered.
Proceedings ArticleDOI
Simplifying Hill-based muscle models through generalized extensible fuzzy heuristic implementation
TL;DR: The Fuzzy Logic Implemented HIll-based (FLIHI) muscle model is developed, which is tantamount to a fuzzy EMG-to-muscle force estimator that captures dynamic muscle properties while providing robustness to partial or noisy data.
Proceedings ArticleDOI
Muscle activation profiles based on the proportionality hypothesis of the Kinematic Theory of Human Movements
TL;DR: This work presents an original and innovative approach to produce muscle activation profiles from the proportionality hypothesis of the Kinematic Theory of Human Movement, and demonstrates that the cumulative time delay derived from polygonal distributions of muscle fibers will always converge.
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
TL;DR: In this paper, the mean fibre type proportions of each muscle were examined and the spatial distribution of the fibre types was examined in order to determine whether this was random or not, and the number of closed fibers observed in the actual samples was compared statistically with the number expected to occur in a hexagonal lattice model, assuming a random distribution.
Journal ArticleDOI
Dynamic properties of mammalian skeletal muscles.
TL;DR: The author examines the relationship between ATPase activity of myosin and intrinsic speed of shortening, and the effects of nerve cross-union on properties of myOSin.
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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