PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is an example of an isometric contraction?
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shaking the head as to say “no”
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pushing against an immovable wall
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bending the elbow
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rotating the arm
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Explanation:
Detailed explanation-1: -The correct answer is a. Pushing against a wall involves the muscle contracting in a way that doesn’t change the muscle’s length. This is known as an isometric contraction.
Detailed explanation-2: -Isometric exercises (also known as static exercises) are performed by increasing tension in a muscle while keeping its length constant. To perform an isometric exercise, joint motion must be prevented. This can be achieved by pushing against an immovable object such as a wall (Fig.
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