The effects of low-load motor control exercises and a high-load lifting exercise on lumbar multifidus thickness – a randomized controlled trial
(English)Manuscript (preprint) (Other academic)
Randomized controlled trial
The aim of this study was to compare the effects of low-load motor control exercises and a high-load lifting exercise on lumbar multifidus thickness among patients with nociceptive mechanical low back pain.
Summary of Background Data
There is evidence that patients with low back pain may have a decreased size of the lumbar multifidus muscles with an asymmetry between left/right sides in the lower back. It has also been shown that low-load motor control training can affect this asymmetry; essentially, it is effective in equalizing side differences in lumbar multifidus muscle size. It is, however, not known whether a high-load exercise has the same effect.
Sixty-five participants diagnosed with nociceptive mechanical low back pain were included and randomized into low-load motor control exercises or a high-load lifting exercise, the deadlift. The lumbar multifidus thickness at the fifth lumbar vertebra was measured, using rehabilitative ultrasound imaging, at baseline and after a 2-month training period.
There were no differences between interventions regarding effect on lumbar multifidus muscle thickness. However, the linear mixed model analysis showed a significant effect for asymmetry. The thickness of the lumbar multifidus muscle on the small side increased significantly compared to the large side in both intervention groups.
There was a difference in thickness of the lumbar multifidus muscles between sides. It seems that exercises focusing on spinal alignment may increase the thickness of the lumbar multifidus muscles on the small side, irrespective of exercise load.
Low Back Pain, morphology, multifidus, deadlift, motor control, resistance training
Research subject Physiotherapy
IdentifiersURN: urn:nbn:se:umu:diva-119936OAI: oai:DiVA.org:umu-119936DiVA: diva2:925692