Lower back pain is a symptom that relates to many diseases or different causes, such as disc protrusion, hyperosteogeny of the lumbar vertebrae, lumbar muscle strain, lumbar sprain, lumbar degenerative disease, rheumatism or rheumatoid and so on.  Visceral diseases can also cause discomfort of the lower back.  However, back pain for athletes or motility back pain for normal people is often due to long-term muscle strain caused in the lumbar spine, after repeated generated force, leading to structural lesions, joint instability, and variation or degeneration of disc location.