The Effects of Vibration, PNF and Mixture training on flexibility of hamstring muscles

Introduction; The purpose of this study was to examine the effect of 3 Vibration, PNF(Proprioceptive Neuromuscular Facilitation) and Mixture stretching method on flexibility of hamstring muscles in non-athletics male students. Method; for this purpose 30 students were selected by goal oriented method and then were divided to 3 groups: vibration (N=10), PNF (N=10) and mixture (N=10). Firstly, the flexibility of hamstring muscles was measured by the “passive leg straight test”, then every 3 group were performed their trains for 4 weeks and After ending training passive leg straight test in 3 groups was attained. The results indicated that the flexibility in every 3 groups significantly increased after training protocol (p = 0.001). Although, in hamstring muscles flexibility was not found the significant difference between vibration and PNF groups(p > 0.05), its value in mixture group was significantly more than other groups(p = 0.000). Thus based on results of this study, although the athletics achieve relatively favorable levels by each of vibration or PNF methods, the combining these methods can be help to improvement and developing in flexibility up to most value. Hence, this stretch training method advice mostly in the sports such as gymnastic, wrestling and dancing that were needed to high flexibility.