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Bottom line
Workplace interventions to prevent back pain in office workers show mostly small, statistically uncertain effects; physical activity and ergonomics look the most promising, but their practical importance is questionable and the evidence is low-certainty.
Moderate evidencePublished
Evidence hierarchy
Study participants
Office workers in employment settings (administration, engineering, healthcare and similar), mostly mixed samples with and without back pain at baseline
Study Summary
This systematic review with network meta-analysis pooled 24 randomized and cluster-randomized trials (7080 office workers) to compare workplace interventions—ergonomics, physical activity, education, behavioral, and multicomponent programs—for preventing back pain (defined as pain anywhere in the spine) and work absence. Most effects were small and not statistically significant, with low to very low certainty of evidence. Physical activity probably reduced days of work absence slightly (about one day), and combining physical activity with ergonomics may modestly reduce back pain intensity, both compared with no/minimal intervention. The authors conclude that the practical relevance of these effects is questionable and that better-designed trials are needed.
Key Findings
| Finding | Detail | Impact |
|---|---|---|
| Physical activity probably reduces days of work absence slightly | Compared with no/minimal intervention, physical activity reduced days of work absence by a mean difference of -1.10 days (95% CI -2.07 to -0.13; moderate certainty of evidence), though this was based on only one study and the authors call the effect small. | Medium |
| Physical activity combined with ergonomics may reduce back pain intensity | In the component network meta-analysis, the combination of ergonomics and physical activity showed a reduction in back pain intensity versus no/minimal intervention (SMD -0.41, 95% CI -0.80 to -0.02); no other component combination reached statistical significance. | Medium |
| Most interventions showed no statistically significant effect | For the number of participants with back pain and for back pain intensity, active interventions (multicomponent, physical activity, ergonomics, behavioral, education) may not reduce outcomes versus no/minimal intervention; nearly all confidence intervals crossed the null. | High |
| Certainty of evidence was low to very low and all studies had risk of bias | Risk of bias was rated 'some concerns' or 'high' for all 24 studies, driven mainly by high loss to follow-up and lack of blinding; GRADE certainty was low or very low for most comparisons. Findings must be interpreted with caution. | High |
| Interventions were generally well received with rarely reported adverse events | Across eight studies assessing satisfaction, a large proportion of participants were satisfied; adverse events were monitored in only four studies and were minor or rare where reported. | Low |
Compared with no/minimal intervention, physical activity reduced days of work absence by a mean difference of -1.10 days (95% CI -2.07 to -0.13; moderate certainty of evidence), though this was based on only one study and the authors call the effect small.
In the component network meta-analysis, the combination of ergonomics and physical activity showed a reduction in back pain intensity versus no/minimal intervention (SMD -0.41, 95% CI -0.80 to -0.02); no other component combination reached statistical significance.
For the number of participants with back pain and for back pain intensity, active interventions (multicomponent, physical activity, ergonomics, behavioral, education) may not reduce outcomes versus no/minimal intervention; nearly all confidence intervals crossed the null.
Risk of bias was rated 'some concerns' or 'high' for all 24 studies, driven mainly by high loss to follow-up and lack of blinding; GRADE certainty was low or very low for most comparisons. Findings must be interpreted with caution.
Across eight studies assessing satisfaction, a large proportion of participants were satisfied; adverse events were monitored in only four studies and were minor or rare where reported.
Strengths
- Pre-registered, published protocol (PROSPERO) and PRISMA 2020-compliant reporting
- First systematic review to apply network and component network meta-analysis to office-worker back pain prevention, combining direct and indirect evidence
- Comprehensive search across eight databases plus trial registries, with study selection, extraction, risk-of-bias and GRADE done independently in duplicate
- Involvement of an experienced information specialist and a statistician with NMA expertise
- Transparent appraisal using RoB 2 and GRADE, with sensitivity analyses for risk of bias, follow-up duration, intervention duration, and pain localization
Limitations
- Certainty of evidence was low to very low for most comparisons, and all 24 included studies were at 'some concerns' or 'high' risk of bias
- High loss to follow-up and lack of blinding of participants and providers across studies
- Several pooled effects rested on few studies and/or indirect evidence; the physical-activity work-absence finding came from a single study
- All but one study used mixed samples of people with and without back pain at baseline, so results cannot be cleanly attributed to primary prevention
- Heterogeneous and incompletely reported outcomes and intervention descriptions required subjective intervention classification and limited quantitative synthesis (e.g., satisfaction and adverse events could not be pooled)
Key Takeaways for Patients
What This Means for You
- 01If you have a desk job, staying physically active may help you take slightly fewer sick days due to back pain, though the benefit appears small.
- 02Pairing regular physical activity with good workplace ergonomics may help ease back pain intensity a little more than doing neither.
- 03No single workplace program was a clear winner, and the overall evidence is weak, so manage your expectations about how much any one intervention will help.
- 04Workplace back-pain programs were generally well tolerated and well liked by participants, with few side effects reported.
Read the Full Paper
Access the complete peer-reviewed study from Scandinavian Journal of Work, Environment & Health
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