What type of muscle contraction occurs without changing the length of the muscle?

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Prepare for the VTCT Sports Massage Level 3 Exam. Test your knowledge with flashcards and multiple choice questions, each with hints and explanations. Get ready to excel in your exam!

Multiple Choice

What type of muscle contraction occurs without changing the length of the muscle?

Explanation:
The concept being tested is how muscle contractions are classified by whether the muscle changes length. An isometric contraction is when the muscle tenses and produces force but does not shorten or lengthen, so the joint angle remains the same. This occurs, for example, when you hold a position or push against something that doesn’t move. In contrast, isotonic contractions involve a change in length as movement occurs, with concentric shortening and eccentric lengthening. Since the question specifies no change in length, isometric is the correct choice.

The concept being tested is how muscle contractions are classified by whether the muscle changes length. An isometric contraction is when the muscle tenses and produces force but does not shorten or lengthen, so the joint angle remains the same. This occurs, for example, when you hold a position or push against something that doesn’t move. In contrast, isotonic contractions involve a change in length as movement occurs, with concentric shortening and eccentric lengthening. Since the question specifies no change in length, isometric is the correct choice.

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