PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a muscle contracts, or shortens, it is going through a ____ contraction. Example:pushing the weight up for the bench press or squat.
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Concentric
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Static
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Eccentric
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None of the above
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Explanation:
Detailed explanation-1: -Concentric contractions involve the muscle shortening under tension, and it is the most common form of muscular contraction. For example, the biceps concentrically contract during the upward phase of a bicep curl, or in the triceps during the upward phase of a push-up.
Detailed explanation-2: -An eccentric contraction refers to any contraction where the muscle lengthens under load or tension. So in the squat exercise, the quadriceps muscles will contract eccentrically (lengthen) in the downward phase of the movement (the opposite direction of the arrow), as can be seen in the adjacent picture. 3.
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