Tight Hamstrings Associated with Low Back Pain.
In this study, researchers matched 30 individuals suffering from low back pain with 30 participants of the same height and weight without low back pain. The investigators then measured the participants’ hamstring length and found that those without low back pain had significantly longer hamstrings than the individuals with low back pain. The findings suggest that reduced hamstring length may be either a contributor or the result of low back pain.
Journal of Bodywork and Movement Therapies, June 2017