CanFitPro Personal Training Specialist Practice Test

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What is the stretch reflex?

  1. A method to increase flexibility

  2. An involuntary contraction of a muscle when stretched rapidly

  3. The reflex to stop stretching when pain occurs

  4. A psychological response to stretching

The correct answer is: An involuntary contraction of a muscle when stretched rapidly

The stretch reflex is an involuntary contraction of a muscle in response to a quick stretch. This reflex is designed to protect our muscles from over-stretching and potential injury. Options A and D are incorrect because the stretch reflex is not related to increasing flexibility or a psychological response. Option C is also incorrect because the stretch reflex is a quick, automatic contraction, not a conscious decision to stop stretching.

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