Data on muscle fibre conversion and fibre splitting in man.
A high proportion of the "intermediate" muscle fibres, which are semi-dark after both acidic and alkaline preincubation in ATP-ase staining, was found in the thigh with heart failure. Characteristic patterns of fibre splitting were found mostly in jumpers' muscles. Possibilities of fibre subgroup transformation and fibre hyperplasia due to training are discussed.
D000251:Adenosine Triphosphatases / Q000378:metabolism; D000328:Adult; D002648:Child; D006651:Histocytochemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D009132:Muscles / Q000033:anatomy & histology / Q000502:physiology*; D010809:Physical Fitness; D013771:Tetralogy of Fallot / Q000503:physiopathology*
D000251:Adenosine Triphosphatases