Nearly every sport requires strength, but what each sport really calls for is sport – specific – strength. Mxs plays an important, if not the determinant, role in creating sport – specific strength. An athletes ability to generate MxS depends to a great extend on the diameter or cross-sectional area of the muscle involved, more specifically, the diameter of the myosin filaments, including their cross bridges; the capacity to recruit FT muscle fibers; and the ability to synchronize all the muscles involved in an action.
Muscles size depends greatly on the duration of the hypertrophy phase, where the diameter of myosin/actin and the increase in protein content in the form of cross bridges depends on the volume and duration of the Mx S phase.
STRUCTURE OF THE MUSCLE Celle
A muscle consist of special fibers of a few inches long to more then 3feet that extend the entire length of the muscle. This fibers are grouped in bundles called FASCICULI, held together by a sheath called the PERIMYSIUM. Each fiber contains many threadlike protein strands called MYOFIBRILS, which hold the contractile units, the SARCOMERES. Each sarcomere contains a specific arrangement of the contractile protein’s myosin(thick filaments) and actin(thin filaments), whose actions are important in muscle contraction. The ability of a muscle to contract and exert force is determined by its design, the cross-sectional area, the fibers length, and the number of fibers within the muscle. The number of fibers is genetically determined and is not affected by training; however, the other variables can be. Dedicated training increases the thickness of muscle filaments, increasing both muscle size and force of contraction.
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6 comments
Hoorricky says:
December 11, 2009 at 9:38 pm (UTC -7 )
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cst says:
January 13, 2011 at 11:11 pm (UTC -7 )
Thank you I will do
cst says:
February 7, 2011 at 1:31 pm (UTC -7 )
Will do more
Umbilical Cord says:
January 28, 2011 at 11:31 am (UTC -7 )
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Peotr says:
February 14, 2011 at 8:43 pm (UTC -7 )
Thank you. Peotr
penislänge says:
October 7, 2011 at 9:40 am (UTC -7 )
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