Myofibrillar ATPase activity in skinned human skeletal muscle fibres: fibre type and temperature dependence.

@article{Stienen1996MyofibrillarAA,
  title={Myofibrillar ATPase activity in skinned human skeletal muscle fibres: fibre type and temperature dependence.},
  author={Ger J M Stienen and Jeroen L Kiers and Roberto Bottinelli and Carlo Reggiani},
  journal={The Journal of physiology},
  year={1996},
  volume={493 ( Pt 2)},
  pages={299-307}
}
1. Myofibrillar ATP consumption and isometric tension (P0) were determined in chemically skinned skeletal muscle fibres from human rectus abdominis and vastus lateralis muscle. Fibres were classified in four groups (I, IIA, IIB, IIA/B or mixed) based on myosin heavy chain composition. 2. ATP consumption (+/- S.E.M.) at 20 degrees C varied from 0.41 +/- 0.06 mmol l-1 s-1 in type IIB fibres (n = 5) to 0.10 +/- 0.01 mmol l-1 s-1 in type I fibres (n = 13). 3. The ratio between ATPase activity and… CONTINUE READING
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