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Adding chiropractic treatment to ergonomic training reduces pain and biopsychosocial impact in industrial workers with nonspecific chronic neck pain, but does not improve sleep quality.

In a randomized controlled trial of 45 male industrial workers with chronic nonspecific neck pain, adding chiropractic treatment to ergonomic training significantly reduced pain (VAS) and biopsychosocial impact (BNQ) compared to sham manipulation or training alone. Disability (NDI) improved across all groups, but sleep quality (PSQI) remained unchanged.

Last updated: Aug 28, 2026•1 RCTs•📖 Read as article →

Evidence Score

Evidence Score44/100
Human RCT★★☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. The Effectiveness of Ergonomic Training and Chiropractic Treatment in Industrial Workers with Nonspecific Chronic Neck Pain: A Randomized Controlled Trial.

observational

Balikçi D, Dikmen Hoşbaş B, Şevgin Ö · Journal of occupational and environmental medicine (2026)

Participants: N/A
Duration: 4 weeks
Intervention: Chiropractic treatment (spinal manipulation) added to ergonomic training, compared to sham manipulation plus ergonomic training or ergonomic training alone, for four weeks.
Outcome: Pain (VAS), biopsychosocial impact (BNQ), disability (NDI), and sleep quality (PSQI)
Effect Size: N/A (not reported in abstract)
Population: Male industrial workers with nonspecific chronic neck pain

Result:

PubMed: 42649544DOI: 10.1097/JOM.0000000000003872

Mechanism Graph

Chiropractic spinal manipulation may reduce mechanical neck pain and associated muscle tension.
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Reduced pain may lead to decreased biopsychosocial impact, improving overall well-being.
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However, the lack of change in PSQI suggests that sleep quality may not be directly influenced by pain reduction in this population.
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Result: Pain and biopsychosocial impact improved, but sleep quality did not change.

Limitations

  • ⚠Small sample size (15 per group) limits generalizability.
  • ⚠Short intervention duration (4 weeks) may be insufficient to observe changes in sleep quality.
  • ⚠Only male industrial workers were studied, limiting applicability to other populations.
  • ⚠Sleep quality was not a primary outcome, and the study may not have been powered to detect changes in PSQI.

Frequently Asked Questions

Did chiropractic treatment improve sleep quality in this study?▼

No, sleep quality as measured by the PSQI was unchanged after four weeks of chiropractic treatment added to ergonomic training.

What were the main benefits of adding chiropractic treatment to ergonomic training?▼

The addition of chiropractic treatment significantly reduced pain (VAS) and biopsychosocial impact (BNQ) compared to sham manipulation or ergonomic training alone.

How many participants were in this trial?▼

Forty-five male industrial workers were randomized, with 15 participants in each of the three groups.

Was the study a randomized controlled trial?▼

Yes, it was a randomized controlled trial with three arms: chiropractic treatment plus ergonomic training, sham manipulation plus ergonomic training, and ergonomic training alone.

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References

  1. 1.Balikçi D, Dikmen Hoşbaş B, Şevgin Ö. "The Effectiveness of Ergonomic Training and Chiropractic Treatment in Industrial Workers with Nonspecific Chronic Neck Pain: A Randomized Controlled Trial.." Journal of occupational and environmental medicine, 2026. PMID: 42649544 DOI: 10.1097/JOM.0000000000003872
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.