Modified hold relax proprioceptive neuromuscular Facilitation stretching versus static stretching techniques for increasing the flexibility of hamstring muscle : A review of literature.

Modified Hold-Relax Proprioceptive Neuromuscular Facilitation (PNF) Stretching and Static Stretching techniques are common practice for increasing range of motion, though a systematic literature review has been done to evaluate theories behind it. The purpose of this study is intended to review possible mechanisms, proposed theories, and physiological changes that occur due to Modified Hold Relax PNF and Static Stretching Techniques. The studies suggested that both the stretching techniques are effective in increasing the Hamstring muscle flexibility. Various studies suggested that the combination of stretching techniques with the moist pack application can enhance the effect of Stretching. The Hamstring Muscle Stretching increases range of motion with a variety of Stretching techniques, Position, and Durations. Perfectly done Hamstring muscle stretching prevent low back pathology and planar fasciitis.  On the basis of this systematic literature review, it can be concluded that both the Modified Hold Relax PNF Stretching and Static Stretching techniques  are similar effective in improving and maintaining ROM, increasing Muscular Flexibility, and increasing athletic performance, especially after exercise. However, proper protocol, duration and intensity and consistency must be followed to attain and maintain the benefits of stretching techniques.