Investigation of the Contraction Ratio of Transversus Abdominis and Internal Oblique Muscles during Lumbopelvic Stability Test

SUMMARY Background. The clinicians administer lumbopelvic stability test (LPST) to evaluate core stability of lumbar spine and TrA muscle function. While the reduced thickness and contraction ratio of the TrA was well documented among people with nonspecific low back pain (NSLBP), the direct morphological changes of TrA during the LPST had not been reported so … Continued