stretch-isometric contraction-stretch past ROM

stretch-isometric contraction-stretch past ROM

• A. Proprioceptive Neuromuscular Facilitation (PNF)
• B. Active Stretching
• C. Ballistic Stretching
• D. Environmental Training

Answer: (A)

This pattern—stretch, then an isometric contraction, then a further stretch—is characteristic of proprioceptive neuromuscular facilitation (PNF) stretching. In a hold-relax type PNF, you first move into the end of the available range, then the target muscle is contracted isometrically against resistance. This brief contraction triggers autogenic inhibition via the Golgi tendon organs, temporarily reducing the resistance of the muscle to lengthening. When you relax, you’re able to stretch further than before, increasing the range of motion beyond the initial end point. Active stretching wouldn’t involve this isometric hold, ballistic stretching relies on momentum and bouncing, and environmental training isn’t a stretching technique. So the method described aligns with PNF.

This pattern—stretch, then an isometric contraction, then a further stretch—is characteristic of proprioceptive neuromuscular facilitation (PNF) stretching. In a hold-relax type PNF, you first move into the end of the available range, then the target muscle is contracted isometrically against resistance. This brief contraction triggers autogenic inhibition via the Golgi tendon organs, temporarily reducing the resistance of the muscle to lengthening. When you relax, you’re able to stretch further than before, increasing the range of motion beyond the initial end point.

Active stretching wouldn’t involve this isometric hold, ballistic stretching relies on momentum and bouncing, and environmental training isn’t a stretching technique. So the method described aligns with PNF.