E3 PreliminaryModerate confidencePEM unclearMethods-PaperPeer-reviewedMachine draft
Kinesiophobia and symptomatology in chronic fatigue syndrome: a psychometric study of two questionnaires.
Nijs, Jo, Thielemans, Alice · Psychology and psychotherapy · 2008 · DOI
Quick Summary
This study tested two questionnaires designed to measure fear of movement (called kinesiophobia) and symptom severity in ME/CFS patients. Researchers asked 100 Dutch speakers and 48 French speakers with ME/CFS to fill out these questionnaires twice within 24 hours. Both questionnaires worked reliably in both languages and accurately captured what patients said were their most important symptoms.
Why It Matters
Having reliable, valid questionnaires in multiple languages is essential for ME/CFS research and clinical practice. These tools help clinicians assess both the psychological component (fear of movement) and symptom severity consistently across different populations, enabling better international research collaboration and patient assessment.
Observed Findings
- Both Dutch and French versions of the TSK-CFS and CFS symptom list showed good test-retest reliability (ICC ≥0.83)
- The CFS symptom list demonstrated strong internal consistency with Cronbach's alpha ≥0.93
- 78% of French speakers and 82% of Dutch speakers' self-reported symptoms matched the content of the CFS symptom list
- The CFS symptom list showed concurrent validity with the SF-36 health status measure
Inferred Conclusions
- The TSK-CFS and CFS symptom list are psychometrically sound instruments for use in Dutch and French-speaking populations
- These questionnaires reliably measure kinesiophobia and symptom severity in ME/CFS patients
- The instruments capture clinically meaningful symptoms that patients identify as important
Remaining Questions
- Does kinesiophobia causally contribute to ME/CFS symptom progression or maintenance?
- How do kinesiophobia levels correlate with objective biomarkers or post-exertional malaise severity?
- Are there cultural or linguistic differences in how kinesiophobia manifests across different language-speaking ME/CFS populations?
What This Study Does Not Prove
This study does not establish whether fear of movement causes or maintains ME/CFS symptoms, nor does it determine optimal treatment strategies. The study is a measurement validation exercise and does not investigate the mechanisms underlying kinesiophobia in ME/CFS or its clinical impact on outcomes.
Tags
Symptom:PainFatigue
Method Flag:Weak Case DefinitionSmall SampleExploratory Only
Metadata
- DOI
- 10.1348/147608308X306888
- PMID
- 18644213
- Review status
- Machine draft
- Evidence level
- Early hypothesis, preprint, editorial, or weak support
- Last updated
- 8 April 2026
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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