The study investigates how the psoas major (PM) muscle activates during standing movements in individuals with chronic low back pain (cLBP) compared to healthy individuals.
Researchers used ultrasound to measure PM thickness in 12 cLBP and 12 healthy participants during hip flexion.
Results indicated greater PM thickness changes on the non-dominant side in the cLBP group, suggesting potential overactivation, which could inform future rehabilitation programs.