Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
|
pubmed:dateCreated |
1984-3-12
|
pubmed:abstractText |
beta R fibres (type I) constitute less than 10% of the semimembranosus and longissimus dorsi muscles and about twice as much of the gluteobiceps and flexor hallucis. Except for longissimus dorsi, 50% or more consist of alpha W (type IIB) fibres--in semimembranous, as much as 70%. Despite the comparatively large content of alpha W fibres, both the oxidative capacity and the capacity to metabolize fatty acids is high. Furthermore, unexpectedly small differences in oxidative capacity between the three fibre types beta R, alpha R and alpha W (I, IIA and IIB) are revealed by histochemical staining. These results indicate a tendency to bring the three fibre types closer together as regards metabolic activities, as an adaptation to the relatively tranquil life of this animal. However, the large content of alpha W fibres does not accord well with this way of life, as they guarantee quick movements. The comparatively high oxidative capacity of the alpha W fibres in the Svalbard reindeer and the fact that during starvation it is primarily alpha W fibres that contribute to the energy supply by protein degradation may nevertheless account for their abundant occurrence.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:issn |
0300-9629
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
77
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
75-8
|
pubmed:dateRevised |
2008-10-30
|
pubmed:meshHeading |
pubmed-meshheading:6141034-3-Hydroxyacyl CoA Dehydrogenases,
pubmed-meshheading:6141034-Animals,
pubmed-meshheading:6141034-Electron Transport Complex IV,
pubmed-meshheading:6141034-Female,
pubmed-meshheading:6141034-L-Lactate Dehydrogenase,
pubmed-meshheading:6141034-Male,
pubmed-meshheading:6141034-Muscles,
pubmed-meshheading:6141034-Reindeer
|
pubmed:year |
1984
|
pubmed:articleTitle |
Fibre composition and enzyme activities in five different muscles from the Svalbard reindeer.
|
pubmed:publicationType |
Journal Article
|