Flexibility is a vital component of a physical conditioning programme that allows the tissue to accommodate easily to stress, to dissipate shock impact, and to improve efficiency of movement, thus minimizing or preventing injury. A previous study reported that flexibility is important to general health and physical fitness, and hamstring flexibility exercise has been successfully prescribed for relief of low back pain. The prevalence of low back pain was found to be increased in subjects having tight musculature in the lower spine as well as the hamstring muscles