The contents of high-energy @entity6546 in different fibre types in skeletal muscles from XXXX , @entity840 and @entity1 .

@entity1 @entity1734 @entity27489 @entity6546 @entity840 @entity8193 @entity35 @entity857 @entity855
1. The contents of high-energy @entity6546 at rest have been measured in skeletal muscles with different fibre-type composition from @entity35 , @entity840 and @entity1 . All muscles studied biochemically have been characterized histochemically. 2. Fast-twitch muscles had a higher @entity855 / @entity857 ratio than slow-twitch muscles and, with the exception of the tongue in the @entity35 , higher contents of @entity855 and @entity1734 . 3. There was an inverse relationship between the content of @entity1734 and the stainability for @entity27489 dehydrogenase, which is a marker enzyme for oxidative capacity. 4. The biochemical and histochemical data are discussed in relation to known morphological and functional properties of the different muscle-fibre types. It is concluded that fast-twitch fibres have a high @entity855 / @entity857 ratio favouring a fast acceleration of energy production. The content of @entity1734 seems to be related to the glycolytic capacity but not to the contraction time. In addition to being an immediate energy source, @entity1734 functions as a buffer against @entity8193 .
