Forearm muscle activity is modified bilaterally in unilateral lateral epicondylalgia: A case-control study

Heales, L.J., Vicenzino, B., Macdonald, D.A. and Hodges, P.W. (2015) Forearm muscle activity is modified bilaterally in unilateral lateral epicondylalgia: A case-control study. Scandinavian Journal of Medicine and Science in Sports, . doi:10.1111/sms.12584


Author Heales, L.J.
Vicenzino, B.
Macdonald, D.A.
Hodges, P.W.
Title Forearm muscle activity is modified bilaterally in unilateral lateral epicondylalgia: A case-control study
Journal name Scandinavian Journal of Medicine and Science in Sports   Check publisher's open access policy
ISSN 1600-0838
0905-7188
Publication date 2015-12-01
Year available 2015
Sub-type Article (original research)
DOI 10.1111/sms.12584
Open Access Status Not yet assessed
Total pages 9
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2016
Language eng
Abstract Lateral epicondylalgia (LE) is associated with a reduced wrist extensor muscle activity and altered biomechanics. This study compared the coordination between forearm muscles during gripping in individuals with LE and pain-free controls. Intramuscular electrodes recorded myoelectric activity from extensor carpi radialis brevis/longus (ECRB/ECRL), extensor digitorum communis (EDC), flexor digitorum superficialis/profundus (FDS/FDP), and flexor carpi radialis (FCR), bilaterally, in 15 participants with unilateral LE and 15 pain-free controls. Participants performed a gripping task at 20% maximum force in four arm positions. The contribution of each muscle was expressed as a proportion of the summed electromyography of all muscles. In individuals with LE, ECRB contributed less to total electromyography in the symptomatic arm but not the asymptomatic arm than pain-free controls. The contribution of EDC and FDP to total electromyography was greater in both the symptomatic and asymptomatic arm of the LE group, than pain-free controls. No other differences were observed between groups. Subtle differences in muscle activation were present with differing arm positions. These findings indicate forearm muscle activity is modified in LE. It is unknown whether this is cause or effect. Changes in the asymptomatic side may imply involvement of central mechanisms.
Keyword Motor control
Motor system
Neuromuscular control
Tendinopathy
Tennis elbow
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Health and Rehabilitation Sciences Publications
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Tue, 12 Jan 2016, 04:03:42 EST by System User on behalf of Learning and Research Services (UQ Library)