Lower Back Pain most commonly comes from a muscle strain or lumbar strain. When the muscles of the back are stretched too far a muscle strain is likely to occur. Nearly everyone experiences low back pain at a point in their life. An injury to muscle or ligament is the cause of almost all sorts of low back injuries. .
Force applied by muscles produces stress on them. A stress is a force or load that is applied to a body, segment, or muscle. Stress may occur as compression, distraction, shear, torsional, bending, twisting, or any combination. When a muscle get stressed, its connective tissue resist. The muscle and their connective tissue resist these stresses in similar fashion. If .