Isometric contraction of muscles _____________________.
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involves the shortening of intrafusal fibers; |
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involves the shortening of extrafusal fibers; |
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increases the tension within extrafusal fibers; |
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increases the tension within intrafusal fibers; |
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none of the alternatives provided is correct; |
CORRECT - Yes, isometric contraction involves an increase in tension within extrafusal muscle fibers.
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