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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Integrated approach for in vivo evaluation of respiratory muscles mechanics
TL;DR: Analysis of EMG measurements and respiratory muscles forces revealed that muscle activity increased with increased breathing effort, and inspiratory muscles contributed to inspiration even at relatively low flow rates, while expiratory muscles are recruited at higher flow rates.
That Which Does Not Stabilize, Will Only Make Us Stronger.
H. Kazerooni,Ryan Steger +1 more
TL;DR: Clinical Gait Analysis data is used as the framework for the design of a lower extremity exoskeleton system at UC Berkeley and one of the control schemes implemented on the BLEEX is outlined.
Journal ArticleDOI
Closed-loop wrist stabilization in C4 and C5 tetraplegia
M.A. Lemay,P.E. Crago +1 more
TL;DR: This investigation investigated the feasibility of using functional neuromuscular stimulation (FNS) to stabilize wrist flexion/ extension angle in individuals with tetraplegia at C4 and C5, and showed that stimulating the finger flexors can induce a negative stiffness load at the wrist, which destabilizes wrist position.
Journal ArticleDOI
Active muscle response using feedback control of a finite element human arm model
TL;DR: It was concluded that feedback control of a nonlinear musculoskeletal model can be used to obtain posture maintenance and human-like reflexive responses in an FE HBM.
Journal ArticleDOI
Interaction between the Joints in the Shoulder Mechanism: The Function of the Costoclavicular, Conoid and Trapezoid Ligaments:
TL;DR: With the help of a biomechanical shoulder model the role of some of the extracapsular ligaments in the motion pattern of scapula and clavicle can be derived and the possible implications for the treatment of joint problems in the shoulder are discussed.
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.
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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