Alterations in functional connectivity in patients with non-specific chronic low back pain after motor control exercise: a randomized trial.
Chanjuan Zhang, Zhou Zhang, Yuelong Li and 7 others
PMID 38358464WHAT IT FOUND
Motor control exercise provided better long-term pain relief than manual therapy for chronic low back pain.
While both helped immediately, only motor control exercise maintained significant improvements at six months. Brain scans showed motor control exercise changed connectivity in areas linked to pain and posture.
Key findings
01At the 6-month follow-up, the motor control exercise group showed a greater reduction in pain scores and a higher proportion of patients who were pain-free or nearly pain-free compared to the manual therapy group.
02Motor control exercise led to significant changes in brain activity and connectivity in areas responsible for motor control and pain processing, whereas manual therapy did not produce these neural changes.
03Both groups experienced similar pain relief immediately after the 6-week intervention, but the manual therapy group's pain reduction was no longer clinically significant at the 6-month follow-up.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The sample size for the final brain analysis was small (21 in the exercise group, 16 in the manual therapy group) due to MRI technical issues and dropouts, which reduces statistical power. Recruitment was via advertising, which may have introduced selection bias. The study did not track whether patients continued exercising at home or sought other treatments after the 6-week intervention, which could have influenced the 6-month results. It is unclear if the brain changes caused the pain relief or resulted from it.
Declared interests
The authors declared no conflicts of interest.
The easy way to misread this
Do not assume motor control exercise is superior for immediate pain relief. The study found that both exercise and manual therapy provided comparable pain reduction right after the 6-week treatment. The advantage of exercise was seen only at the 6-month follow-up.