Comparative Clinical Trial: Manual Therapy With and Without Radial Extracorporeal Shockwave Therapy to Treat Acute Low Back Pain

Chiropractic Care is the active comparator arm / intervention. All subjects will receive chiropractic care.

This intervention is answering the question: Does on radial ESWT have additive therapeutic effects on the recovery of acute lower back pain symptoms - better or earlier reduction in pain intensity or improvement in physical function - than chiropractic care / manual therapy alone? Subjects will be randomly assigned to receive chiropractic care and ESWT or only chiropractic care.