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Answer :
The correct answer is option B.The pronator muscle undergoes eccentric contraction during arm wrestling and losing, as it works to control the extension of the arm when resisting the opponent's force.
When discussing muscle contractions in the context of arm wrestling, it's important to differentiate between the various types. In arm wrestling, muscles like the pronator teres and pronator quadratus play a crucial role. When a muscle contracts and shortens against a resistance this is known as a concentric contraction.
Given that arm wrestling involves resisting force from an opponent, if the pronator muscle is active and fighting against the losing motion, it would be undergoing an eccentric contraction to control the arm's movement as it extends.
Thus, the correct answer is:b) No, the pronator muscle is eccentric during arm wrestling and losing.
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It depends on the specific movement and position is the pronator muscle concentric during arm wrestling and losing. The correct answer is (D).
During arm wrestling, the pronator muscles, located in the forearm, play a role in rotating the forearm inward. The specific muscle activation and contraction type (concentric, eccentric, or isometric) might vary based on the movement and location of the arm throughout the arm wrestling battle.
In specific scenarios, such as while trying to spin the opponent's arm inside to gain an edge, the pronator muscles may contract concentrically. This indicates that when producing force, the muscle contracts.
On the other hand, the pronator muscles may contract eccentrically when opposing the opponent's rotational force and attempting to stop the forearm from turning inward. This indicates that when producing force, the muscle lengthens.
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