| Inter-limb differences in quadriceps strength and volitional activation. | |
| | |
MedLine Citation:
|
PMID: 22292430 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Abstract In this crossover study, we wished to determine if normalized inter-limb differences in strength differed from inter-limb differences in voluntary activation at 30°, 70°, and 90° of knee flexion. We also assessed the relationship between inter-limb differences in torque with the inter-limb differences in activation. Twenty-five healthy volunteers were used for final data analyses; the order of leg tested, joint angle, and measurement technique (isokinetic strength, voluntary activation) were randomly assigned. Quadriceps strength was measured isokinetically at 1.05 rad · s(-1), while quadriceps voluntary activation was assessed via the central activation ratio. Absolute values of inter-limb differences for both measures were calculated by subtracting the non-dominant leg values from those of the dominant leg. Inter-limb isokinetic strength differences were greater than inter-limb central activation ratio differences at all joint angles (P = 0.003). Interestingly, inter-limb deficits between measures were not strongly correlated, suggesting that these measurements may be evaluating completely different phenomena within the neuromuscular system. These measurement techniques may provide unique information regarding neuromuscular function, suggesting that researchers and clinicians must utilize information from both techniques to determine the true clinical nature of inter-limb deficits. |
| | |
Authors:
|
Brian G Pietrosimone; Chang M Park; Phillip A Gribble; Kate R Pfile; Michael A Tevald |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-1-31 |
Journal Detail:
|
Title: Journal of sports sciences Volume: - ISSN: 1466-447X ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
|
Created Date: 2012-2-1 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8405364 Medline TA: J Sports Sci Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
a Department of Kinesiology , University of Toledo , Toledo , Ohio , USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Reductive dechlorination of methoxychlor by bacterial species of environmental origin: Evidence for ...
Next Document: The illusion of the positive: The impact of natural and induced mood on older adults' false recall.