Specific contributions of various muscle fibre types to human muscle performance: an in vitro study.

@article{Bottinelli1999SpecificCO,
  title={Specific contributions of various muscle fibre types to human muscle performance: an in vitro study.},
  author={Roberto Bottinelli and Maria Antonietta Pellegrino and Monica Canepari and Rosetta Rossi and Carlo Reggiani},
  journal={Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology},
  year={1999},
  volume={9 2},
  pages={87-95}
}
Human skeletal muscle fibres can be divided in five groups: 1, 1-2A, 2A, 2A-2B and 2B, by using myosin heavy chain (MHC) isoforms as molecular markers. This study aimed to define the contribution of each fibre type to the contractile performance of human muscles. Single fibre segments were dissected from bioptic samples of vastus lateralis and chemically skinned. Force-velocity properties, including isometric tension (P0), maximal shortening velocity (Vmax), maximum power output (Wmax) and the… CONTINUE READING
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