Vilikus, Z, Marecková, H, Janatková, I et al. · Sbornik lekarsky · 1998
This study compared heart disease risk factors between people with ME/CFS and healthy controls. Researchers found that despite ME/CFS patients exercising less overall, they had no higher risk for heart disease than the control group. This suggests that reduced exercise activity in ME/CFS does not appear to increase cardiovascular risk in the way it might in other conditions.
This study addresses an important clinical concern: whether the profound reduction in physical activity characteristic of ME/CFS increases cardiovascular disease risk. The finding that reduced exercise in ME/CFS does not translate to elevated CAD risk factors is reassuring for patients and suggests that the pathophysiology of ME/CFS differs from typical sedentary-lifestyle-related cardiovascular disease.
This study does not establish causation or long-term cardiovascular outcomes—it only examined risk factors at a single timepoint. It does not explain why ME/CFS patients have lower exercise capacity, nor does it address whether longer-term follow-up might reveal delayed cardiovascular effects. The small sample size and lack of detailed ME/CFS severity characterization limit generalizability.
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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