Proteins involved in muscle action

Data from Helge et al. Type I Type Type [Pg.279]

Type I is also known as slow twitch fibre. Type llAis also known as fast twitch, and fibre type IIB is also known as fast twitch. Data are from world-class athletes and from fibres in the quadriceps muscle. [Pg.279]

Noakes — did not separate type 11 fibres into A and B. Thus the muscles of sprinter comprise 74% type 11 fibres, probably primarily type IIB. [Pg.279]

Myofibrils contain four major proteins myosin, actin, tropomyosin and troponin. [Pg.279]

Myosin proteins are motor proteins and generate the force for movement. Myosin II is present in skeletal muscle where it forms filaments, binds to actin and hydrolyses ATP. [Pg.279]

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