Linked Life Data

14694506

Source:http://linkedlifedata.com/resource/pubmed/id/14694506

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-12-24
pubmed:abstractText
In order to test the hypothesis that suboptimal activation of synergistic muscles explains the nonlinear nature of the interpolated twitch-voluntary torque relationship, we evaluated differences between stimulating a single muscle [biceps brachii (BB)] and two synergists simultaneously [BB and brachioradialis (BR)] on variables related to the estimation of voluntary activation. Ten subjects performed maximal and submaximal voluntary contractions while electrical stimulation was applied either to the BB, or BB and BR simultaneously, to assess voluntary activation. Simultaneous stimulation of the two synergistic muscles produced significantly greater torque at rest and a significantly greater activation index (95% vs. 91.7% for stimulation of BB only). However, simultaneous stimulation of BB and BR did not consistently elicit greater additional torque during contraction, nor did it improve the linearity of the interpolated twitch-voluntary torque relationship. The greater activation index observed for the simultaneous stimulation of BB and BR compared to BB is explained by the greater torque elicited at rest. We conclude that the nonlinear relationship between interpolated and voluntary elbow flexion torque is not explained by suboptimally activated synergistic muscles.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0148-639X
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
112-9
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Assessment of voluntary activation by stimulation of one muscle or two synergistic muscles.
pubmed:affiliation
Graduate Program in Physical Therapy and Rehabilitation Science, Roy J and Lucille A Carver College of Medicine, University of Iowa, 1-252 Medical Education Building, Iowa City, Iowa 52242-1190, USA.
pubmed:publicationType
Journal Article