The diagram above represents the trigger points that arise from the superficial longissimus thoracis muscle. If these areas look similar to any pain you experience I would not I be surprised. The pain pattern was identified recently in a research study published in the Journal of Biomechanics as the most likely injured due to a weakness in the deep core muscles. Multifidus, quadratus lumborum, psoas, and deep fascicles of the erector spinae are considered part of the deep core for this study. Note that the "abs" were not included! Because the superficial LT was most often the muscle overcompensating for weak deep core muscles, it may be “most at risk for fatigue or injury” if deep core muscles are not functioning properly.
If you are a runner, and experience low back pain, you are in good company. Up to 14% of American runners experience it each year. "Muscular compensations may increase risk of muscular fatigue or injury and increased spinal loading over numerous gait cycles may result in damage to spinal structures. Therefore, insufficient strength of the deep core musculature may increase a runner's risk of developing LBP."
How do you know if your deep core muscles are weak? If you have a job that requires you to sit, it is very likely. The best you can do is seek the advice of a health care professional with experience in recreational runners. Call us at (616) 301-3000 and set up an appointment for a free consultation to find out for yourself.
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