Which technique involves contractions starting at about 25% of the client's strength and increasing up to 50% while counterforce is applied?

Which technique involves contractions starting at about 25% of the client's strength and increasing up to 50% while counterforce is applied?

• A. Muscle energy techniques
• B. Friction
• C. Petrissage
• D. Effleurage

Answer: (A)

Muscle Energy Techniques use the client’s voluntary, isometric contractions against a counterforce applied by the therapist. The contraction begins at a light intensity—about 25% of the client’s strength—and is progressively increased toward 50% as the therapist maintains gentle resistance at the restricted point. This controlled contraction helps activate reflexes (such as autogenic inhibition via the Golgi tendon organ), allowing the muscle to relax and lengthen further when the contraction releases. The therapist then passesively moves the limb to a new, greater range of motion. This approach is distinct from other manual techniques like friction, Petrissage, or effleurage, which do not rely on the client actively contracting against a therapist’s counterforce. Those techniques focus on tissue manipulation, kneading, or superficial gliding for relaxation and circulation rather than neuromuscular re-education through resisted contractions.

Muscle Energy Techniques use the client’s voluntary, isometric contractions against a counterforce applied by the therapist. The contraction begins at a light intensity—about 25% of the client’s strength—and is progressively increased toward 50% as the therapist maintains gentle resistance at the restricted point. This controlled contraction helps activate reflexes (such as autogenic inhibition via the Golgi tendon organ), allowing the muscle to relax and lengthen further when the contraction releases. The therapist then passesively moves the limb to a new, greater range of motion.

This approach is distinct from other manual techniques like friction, Petrissage, or effleurage, which do not rely on the client actively contracting against a therapist’s counterforce. Those techniques focus on tissue manipulation, kneading, or superficial gliding for relaxation and circulation rather than neuromuscular re-education through resisted contractions.