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.
Previous research indicates that the transversus abdominis (TrA) activation is lower in individuals with chronic low back pain (cLBP) compared to healthy individuals, especially in less functional positions.
This pilot study compared TrA activation in healthy vs. cLBP subjects during different upright movements: double leg standing (DLS), single leg standing (SLS), and a quarter squat on one leg (QSLS).
The results showed no significant differences in TrA activation between the two groups during the tested movements, suggesting that evaluating TrA activation in these upright functions may not be beneficial for managing cLBP.