Which technique is a method of enhancing flexibility that uses a combination of stretching and isometric contractions?

Which technique is a method of enhancing flexibility that uses a combination of stretching and isometric contractions?

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

Answer: (A)

Proprioceptive neuromuscular facilitation uses a mix of stretching and a short isometric contraction to improve flexibility. In this method, you stretch a muscle to its end range, then perform a held isometric contraction against resistance for a few seconds, relax, and then passively stretch again to a greater range. The isometric phase helps activate inhibitory reflexes in the muscle (autogenic and reciprocal inhibition), allowing the muscle to relax more deeply and be stretched further. Because it combines both stretching and muscle contraction, it’s distinct from purely active, passive, or ballistic stretching, and from approaches that don’t use an isometric component.

Proprioceptive neuromuscular facilitation uses a mix of stretching and a short isometric contraction to improve flexibility. In this method, you stretch a muscle to its end range, then perform a held isometric contraction against resistance for a few seconds, relax, and then passively stretch again to a greater range. The isometric phase helps activate inhibitory reflexes in the muscle (autogenic and reciprocal inhibition), allowing the muscle to relax more deeply and be stretched further. Because it combines both stretching and muscle contraction, it’s distinct from purely active, passive, or ballistic stretching, and from approaches that don’t use an isometric component.