[Comparison of effectiveness and durability of two stretching methods [Hold-Relax, Static Stretching] for treatment of hamstring muscle tightness]

It is quite obvious that stretching techniques enhance the joint range of motion. However the permanency of these techniques after the treatment period remains questionable. So this randomized clinical trial was done to determine and compare the permanency of Hold-Relax and static Stretching techniques on extensibility of short hamstring during 4 weeks. Twenty non-athlete girls with 18-26 years old with bilateral hamstring muscles shortness [SLR /= 0.05]. These findings revealed that there is no clear difference in terms of effects and permanency between the two techniques, so the results of our study enable clinicians to provide the more simple technique in their stretching activities that is [static stretch]