The effects of spinal manipulation added to exercise on pain and quality of life

Key points

1. 01This single-centre randomized controlled trial compared manipulation plus exercise against exercise alone in 100 adults with thoracic spinal pain.
2. 02Both groups improved significantly in pain and in all SF-36 quality-of-life domains over the study.
3. 03After the 8th session the manipulation-plus-exercise group had significantly better pain and quality-of-life scores than exercise alone.
4. 04At the 12-week follow-up there was no significant difference between the groups, because the manipulation group's gains faded while the exercise group's held.
5. 05Authors suggest the manipulation benefit is short-term, possibly reflecting regression to the mean.

How it was conducted

Design

Open-label parallel-group randomized controlled trial (single centre, Lahore, Pakistan), computer-generated randomization with SNOSE allocation concealment, assessors and participants blinded

Participants

100 adults with nonspecific thoracic (T1 to T12) spinal pain and mobility deficit, ages 16 to 60 (127 assessed, 27 excluded)

Groups

Experimental (n=50): high-velocity low-amplitude thoracic manipulation plus thoracic strengthening exercises. Control (n=50): thoracic exercises alone

Dose and timing

Twice weekly for 4 weeks, 8 sessions total; assessed at baseline, after 1st session, after 8th session, and at 12-week follow-up

Primary outcomes

Pain on a 10 cm visual analogue scale (VAS); quality of life on the SF-36

Analysis

Intention-to-treat with last observation carried forward; repeated-measures ANOVA (within group) and independent t-test (between group)

What they found

• Within both groups, VAS and all 8 SF-36 domains improved significantly (p<0.001).
• After the 8th session the manipulation group had significantly better pain, with a between-group mean difference of 1.14 (95% CI 0.62 to 1.65), and significantly better scores on all SF-36 domains (p<0.05).
• VAS fell from 6.50 (1.55) at baseline to 2.26 (1.08) after the 8th session in the experimental group, versus 6.58 (1.41) to 3.40 (1.48) in the control group.
• SF-36 physical functioning after the 8th session was 64.70 (16.94) experimental versus 55.46 (22.35) control.
• At the 12-week follow-up there was no significant between-group difference for pain or any quality-of-life domain (p>0.05); experimental-group VAS rose to 2.46 (1.23) while control-group VAS continued to 2.74 (1.06).
• Within the experimental group, quality of life dropped significantly from the 8th session to the 12-week follow-up (p<0.05 for all domains).

Limitations

• Data came from a single centre, limiting how widely the results apply.
• Follow-up was only 12 weeks, so longer-term effects are unknown.
• The manipulation force was not measured, so the treatment dose cannot be standardized or reproduced precisely.
• Pain chronicity (acute versus chronic) was not recorded, and acute and chronic pain may respond differently.

Why it matters

For patients

If you have mid-back pain, adding manipulation to your exercise program may speed up early pain relief, but exercise alone appears to hold its benefit better over a few months.

For clinicians

Thoracic manipulation can be a useful short-term add-on to exercise for thoracic spinal pain, but it offered no advantage over exercise alone by 12 weeks, so exercise should remain the foundation of care.

For readers

This is the first RCT testing manipulation added to exercise for thoracic spinal pain, and it shows a real but short-lived extra benefit that does not persist once treatment stops.