Muscle coactivation: a generalized or localized motor control strategy?

Laura A Frey-Law; Keith G Avin

doi:10.1002/mus.23801

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Muscle coactivation: a generalized or localized motor control strategy?

Journal article

Open access

Peer reviewed

Muscle coactivation: a generalized or localized motor control strategy?

Laura A Frey-Law and Keith G Avin

Muscle & nerve, Vol.48(4), pp.578-585

10/2013

DOI: 10.1002/mus.23801

PMCID: PMC4180747

PMID: 24037745

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http://doi.org/10.1002/mus.23801View

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Abstract

We examined generalized versus joint-specific influences on muscle coactivation. Muscle coactivation was assessed during maximal isometric and isokinetic knee and elbow joint extension moments in 48 healthy subjects (27 men). Local (joint-specific) and generalized (person-specific) contributions were examined using a combination of statistical tests, including regression with generalized estimating equations (GEEs), exploratory factor analysis, and cluster analysis. GEEs produced similar significant coefficients for gender and joint; contraction type and test condition (angle or velocity) were not significant. Factor analysis indicated 2 joint-based factors, and cluster analysis indicated 2 groups of individuals, those with and without elevated coactivation at the knee and elbow. Women exhibited greater coactivation at both joints, but no consistent influences of angle or velocity were observed at either joint. Muscle coactivation is a neuromuscular control response determined by local, joint-specific, and generalized, individual-specific influences.

Knee - physiology

Humans

Muscle Stretching Exercises - methods

Male

Muscle, Skeletal - physiology

Young Adult

Muscle Stretching Exercises - instrumentation

Muscle Contraction - physiology

Range of Motion, Articular - physiology

Sex Factors

Adult

Elbow - physiology

Female

Electromyography - instrumentation

Electromyography - methods

Details

Title: Subtitle: Muscle coactivation: a generalized or localized motor control strategy?
Creators: Laura A Frey-Law - Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, 1-252 Medical Education Building, University of Iowa, Iowa City, Iowa, 52242, USA; Virtual Soldier Research, Center for Computer-Aided Design, College of Engineering, University of Iowa, Iowa City, Iowa
Keith G Avin
Resource Type: Journal article
Publication Details: Muscle & nerve, Vol.48(4), pp.578-585
DOI: 10.1002/mus.23801
PMID: 24037745
PMCID: PMC4180747
NLM abbreviation: Muscle Nerve
ISSN: 0148-639X
eISSN: 1097-4598
Publisher: United States
Grant note: K12 HD055931 / NICHD NIH HHS K01AR056134 / NIAMS NIH HHS K01 AR056134 / NIAMS NIH HHS F31 AR056175 / NIAMS NIH HHS
Language: English
Date published: 10/2013
Academic Unit: Nursing; Physical Therapy and Rehabilitation Science
Record Identifier: 9984046926302771

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