ציטוט:
פורסם במקור על ידי Recoba
את הטרפזים מפתחים כי הם זוג שרירים מהיפים שיש בגוף.
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A man or woman with large, well-developed traps causes people to think, "Wow, that guy looks powerful," or, "That is one thick, rugged dude," or even, "Hmm? I wonder who wears the pants in her family?!"
Trap development is a sign of strength. It's uncommon to see a man or woman with developed traps that hasn't proportionately developed the rest of his or her body. More important than the aesthetics of big, well-developed traps is the injury prevention and performance enhancement they provide to an athlete or manual laborer. The trapezius group is critical to stabilization of the shoulder in any activity requiring use of the arm.
Trap development is also critical for performance and injury prevention in numerous sports. The trapezius group (upper, middle and lower) are key contributors to the force generating sequence during most pulling exercises and are critical to most power lifts, particularly the Olympic lifts.
Explosive efforts in contact sports, especially where tackling or checking is involved, rely on the synergistic action of the legs, trunk and traps. The shoulder is often the weapon of choice in tackling sports, but alone, it's not strong enough and does not have adequate amplitude of movement to inflict the intended punishment on an opponent.
Therefore, to compensate for the lack of strength, the force and amplitude of movement by the legs and trunk are transferred upward through the kinetic chain to the shoulder. Here, the massive leg and trunk forces must be carefully sequenced, such that they summate with those of the muscles above. The result of well-timed force summation at the shoulder, when appropriately delivered to an opponent's body, is well understood by anyone who has played contact sports or has watched them on TV!
It was demonstrated long ago that "for every action, there is an equal and opposite reaction." When the traps are used to lift heavy loads or when they are the end product of forces from below, there's always a risk that they may not be strong enough to do their job, or that they may fatigue prior to the muscles producing force below them. Unfortunately, because of our anatomical design, failure of the traps to do their job can result in injury to the neck, shoulder and the brachial plexus (the nerve bundle leaving the neck to feed the arm and shoulder).
