In PNF stretching, when is contract-relax (CR) typically appropriate?

In PNF stretching, when is contract-relax (CR) typically appropriate?

• A. After the stretch is complete
• B. Only for nerve tension tests
• C. When the client has adequate strength and tolerance and the goal is to increase ROM beyond passive stretch
• D. When the client is fatigued

Answer: (C)

Contract-relax uses a brief isometric contraction of the muscle being stretched while it’s held at end range, then the limb is relaxed and taken into a deeper passive stretch. This works because the contraction activates the Golgi tendon organs, producing autogenic inhibition, which reduces resistance and lets you lengthen the muscle further than a passive stretch alone. It’s most effective when the client has enough strength and tolerance to perform that voluntary contraction safely, and when the goal is to increase range of motion beyond what passive stretching can achieve. If the client is fatigued or weak, the contraction may be unsafe or ineffective. This technique is not about stretching after the stretch is complete, and it’s not limited to nerve tension tests.

Contract-relax uses a brief isometric contraction of the muscle being stretched while it’s held at end range, then the limb is relaxed and taken into a deeper passive stretch. This works because the contraction activates the Golgi tendon organs, producing autogenic inhibition, which reduces resistance and lets you lengthen the muscle further than a passive stretch alone. It’s most effective when the client has enough strength and tolerance to perform that voluntary contraction safely, and when the goal is to increase range of motion beyond what passive stretching can achieve. If the client is fatigued or weak, the contraction may be unsafe or ineffective. This technique is not about stretching after the stretch is complete, and it’s not limited to nerve tension tests.