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That is very good question! You do not have any thing like partially contracted muscle fibres, most probably. What you have got is partially contracted muscles. The muscle is more or less contracted as per the number of muscle fibres that are contracted at any given time.

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8y ago
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8y ago

Yes. As well as producing movement, some muscles remain partially contracted for long periods to maintain the body's posture. We sometimes call this muscle tone.

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Q: Are there such things as partially contracted muscle fibers?
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