E0 ConsensusModerate confidencePEM unclearSystematic-ReviewPeer-reviewedMachine draft
Fear of movement and avoidance behaviour toward physical activity in chronic-fatigue syndrome and fibromyalgia: state of the art and implications for clinical practice.
Nijs, Jo, Roussel, Nathalie, Van Oosterwijck, Jessica et al. · Clinical rheumatology · 2013 · DOI
Quick Summary
Many people with ME/CFS and fibromyalgia avoid physical activity because they fear it will make their symptoms worse—a concern that is often justified by their experience. This review looked at how common this fear and avoidance are, how they affect people's lives, and what treatments work best. The research found that fear of movement is very prevalent in both conditions and is linked to worse symptoms and lower quality of life.
Why It Matters
Understanding fear of movement and avoidance behavior is critical for ME/CFS care because these responses significantly impact disability and quality of life, yet are potentially modifiable through targeted psychological and physical interventions. Identifying which patients exhibit these patterns may help clinicians personalize treatment strategies and improve clinical outcomes.
Observed Findings
- Fear of movement and avoidance behavior toward physical activity are highly prevalent in both CFS and fibromyalgia populations.
- Fear of movement and avoidance are significantly associated with symptom severity, self-reported disability, and reduced quality of life.
- Multiple measurement instruments exist for assessing fear of movement and avoidance behavior in these populations.
- Patients can be classified into phenotypes (avoiders vs. persisters) based on behavioral responses to symptoms.
Inferred Conclusions
- Identifying patients with ME/CFS and fibromyalgia who display fear of movement and avoidance behavior is essential for treatment planning and predicting outcomes.
- Individually tailored cognitive-behavioral therapy combined with exercise training, adapted to patient phenotype, is the most promising treatment strategy for addressing kinesiophobia and activity avoidance.
- Fear of movement represents a modifiable therapeutic target that may improve overall clinical outcomes when addressed alongside symptom management.
Remaining Questions
- What are the optimal components and sequencing of cognitive-behavioral therapy and exercise training for different patient phenotypes?
- How do measurement instruments for fear of movement perform in terms of sensitivity, specificity, and predictive validity in ME/CFS populations?
What This Study Does Not Prove
This review does not establish causality between fear of movement and symptom exacerbation, nor does it prove that graded exercise is universally safe or effective for all ME/CFS patients. The synthesis relies on existing literature quality, which may vary in rigor, and does not provide new primary evidence of treatment efficacy.
Tags
Symptom:Post-Exertional MalaisePainFatigue
Method Flag:Weak Case DefinitionMixed Cohort
Metadata
- DOI
- 10.1007/s10067-013-2277-4
- PMID
- 23639990
- Review status
- Machine draft
- Evidence level
- Established evidence from major reviews, guidelines, or evidence maps
- Last updated
- 10 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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