The Effectiveness of Static and Dynamic Stretching on Hamstring Flexibility after 4-Weeks Training to Prevent the Risk of Injuries

This study was conducted to investigate the effect of static and dynamic stretching on hamstring muscle flexibility and risk of injury. A total of 20 female students who are in their final year of various departments at the Sultan Idris of Educational University (UPSI) were involved in this study. Subjects were selected based on the body mass index and never active in sports. The will divided into two groups. Group A (n =10) will perform five types of static stretching exercise while the second group B (n = 10) will perform five types of dynamic stretching exercise. They will perform 5-minutes warming up exercise that is jogging before start the stretching. The stretching exercise will handle in three days alternately fo four weeks. The flexibility of the hamstring muscles was measured using a test range protrudes. The instrument that used to measure the flexibility of the hamstring muscles sit reach box, and it is measure before and after the intervention. Pre-test shows no differences between both types of stretching exercise. For the post-test score, static stretching exercise shows the better hamstring flexibility scores than dynamic stretching exercise, t (9) = 23.60, p < 0.005. The results indicated that static stretching exercise is more effective in increasing the hamstring flexibility compared to dynamic stretching exercise and also have results on it in reducing the risk of injury.