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Dynamic stability of spine using stability-based optimization and muscle spindle reflex

Title
Dynamic stability of spine using stability-based optimization and muscle spindle reflex
Author
Parnianpour, Mohammad
Keywords
dynamic simulation; muscle spindle; spine; stability; stretch reflex; LOW-BACK-PAIN; LUMBAR SPINE; LIFTING TASKS; MOTOR CONTROL; IN-VIVO; STIFFNESS INCREASES; EXTENSOR MUSCLES; TRUNK STIFFNESS; MODEL; LOADS
Issue Date
2008-02
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, v. 16, No. 1, Page. 106-118
Abstract
A computational method for simulation of 3-D movement of the trunk under the control of 48 anatomically oriented muscle actions was developed. Neural excitation of muscles was set based on inverse dynamics approach along with the stability-based optimization. The effect of muscle spindle reflex response on the trunk movement stability was evaluated upon the application of a perturbation moment. The method was used to simulate the trunk movement from the upright standing to 60 degrees of flexion. Incorporation of the stability condition as an additional constraint in the optimization resulted in an increase in antagonistic activities demonstrating that the antagonistic co-activation acts to increase the trunk stability in response to self-induced postural internal perturbation. In presence of a 30 Nm flexion perturbation moment, muscle spindles decreased the induced deviation of the position and velocity profiles from the desired ones. The stability-generated co-activation decreased the reflexive response of muscle spindles to the perturbation demonstrating that the rise in muscle co-activation can ameliorate the corruption of afferent neural sensory system at the expense of higher loading of the spine.
URI
https://ieeexplore.ieee.org/abstract/document/4451155http://repository.hanyang.ac.kr/handle/20.500.11754/76860
ISSN
1558-0210; 1534-4320
DOI
10.1109/TNSRE.2007.906963
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > INDUSTRIAL AND MANAGEMENT ENGINEERING(산업경영공학과) > Articles
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