NDLI: Synergic Co-activation in Forearm Pronation

Content Provider	Springer Nature Link
Author	Chang, Shyang Hsyu, Ming Chun Cheng, Hsiu Yao Hsieh, Sheng Hwu Lin, Chen Chiang
Copyright Year	2008
Abstract	Co-activations of agonist and antagonist muscles are believed to be present in voluntary limb movement. Recent studies indicate that such co-activations are either synergic or dyssynergic. The aims of this paper are to (1) develop a novel method that can extract both the intensity and frequency information from the recordings of the surface electromyograms (EMGs) of involved muscles, and (2) investigate if the involved muscles will be under synergic co-activation during voluntary forearm pronation for normal subjects and dyssynergic co-activation for patients with radial nerve palsy. We examined 11 healthy subjects and 4 patients with right-arm radial nerve palsy in this study. For the group of healthy subjects, each one of them was asked to perform 30 trials of voluntary forearm pronation and then 30 trials of passive pronation as control experiments. As to the second group of patients, each one was asked to perform only 15 trials of voluntary pronation due to the limitation and durability of their arms. The recordings of the surface EMGs included the short and long heads of the biceps brachii, the brachialis, the lateral head of the triceps brachii, brachioradialis, and pronator teres. Experimental results of the healthy group indicated that the surface EMGs of all muscles had no statistically significant changes in fractal dimensions (FDs) and spectral frequencies of the control experiments during passive pronation. Yet, during the voluntary pronation experiments, the surface EMGs of all muscle groups were temporally synchronized in frequencies with persistent intensities. Hence, all involved muscle groups were in synergic co-activation. Statistical results of the group mean values of FDs during rest vs. forearm pronation also revealed significant difference with p < 0.01 for healthy subjects. As to the group of patients, their EMGs could still have bursting activities, but the synchronized significant frequencies might be lacking or the intensities as indicated from their FDs would not be persistent. To further compare the FDs among the three different protocols, a mixed-model ANOVA and multiple comparison tests were performed. Finally, in order to illustrate the advantages of this novel method, we have compared it with the detrended fluctuation analysis (DFA). It is believed that this proposed method will have the potential to be a biomarker for evaluating dynamical disease in neuromuscular disorders.
Starting Page	2002
Ending Page	2018
Page Count	17
File Format	PDF
ISSN	00906964
Journal	Annals of Biomedical Engineering
Volume Number	36
Issue Number	12
e-ISSN	15739686
Language	English
Publisher	Springer US
Publisher Date	2008-09-19
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dynamical disease Fractional Brownian motion Synchronization of EMGs Synergic co-activation Voluntary pronation Biochemistry Mechanics Biophysics/Biomedical Physics Biomedical Engineering Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Passive Stiffness of Coupled Wrist and Forearm Rotations

Decoupling Directed and Passive Motion in Dynamic Systems: Particle Tracking Microrheology of Sputum

Hemodynamics in disease

Development and Validation of a Computational Musculoskeletal Model of the Elbow and Forearm

Cytoskeletal mechanics

Image-Based Motion Correction for Optical Mapping of Cardiac Electrical Activity

Altered Lung Motion is a Sensitive Indicator of Regional Lung Disease

Defibrillation

Neural engineering

Synergic Co-activation in Forearm Pronation

Similar Documents

Passive Stiffness of Coupled Wrist and Forearm Rotations

Decoupling Directed and Passive Motion in Dynamic Systems: Particle Tracking Microrheology of Sputum

Hemodynamics in disease

Development and Validation of a Computational Musculoskeletal Model of the Elbow and Forearm

Cytoskeletal mechanics

Image-Based Motion Correction for Optical Mapping of Cardiac Electrical Activity

Altered Lung Motion is a Sensitive Indicator of Regional Lung Disease

Defibrillation

Neural engineering

Synergic Co-activation in Forearm Pronation