Linked Life Data

6538128

Source:http://linkedlifedata.com/resource/pubmed/id/6538128

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1984-4-17
pubmed:abstractText
In isometric contractions, the type II fibres of animal muscle may have a greater specific strength than the type I fibres. This paper reports two retrospective analyses of the influence of fibre-type composition on the ratio of the voluntary isometric strength of the quadriceps to its cross-sectional area at mid-thigh. In 15 normal quadriceps, the ratio of the muscle's strength to its cross-sectional area was weakly correlated with the percentage contribution of type II fibres to a biopsy from the lateral mass of the muscle (r = 0.55, P less than 0.05). Linear regression suggested that type II fibres might have about three times the specific strength of type I fibres. Measurements of the atrophied quadriceps of 11 patients with unilateral knee injury/immobilization were standardized by comparison with the contralateral muscles. Strength/cross-sectional area was again correlated with the percentage area as type II fibres (r = 0.62, P less than 0.05). The data suggested that type II fibres might have about twice the specific strength of type I fibres. Despite the wide confidence limits of each of the analyses, they agree that, in isometric contractions, the type II fibres of the human quadriceps seem stronger, for their cross-sectional area, than the type I fibers.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0144-5979
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
23-32
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
The relative isometric strength of type I and type II muscle fibres in the human quadriceps.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't