Larun, Lillebeth, Odgaard-Jensen, Jan, Price, Jonathan R et al. · European journal of physical and rehabilitation medicine · 2016
This review looked at 8 studies involving over 1,500 people with ME/CFS to see if exercise therapy helps. The findings suggest that graded exercise (like walking, swimming, or cycling done gradually) may reduce fatigue and improve daily functioning and sleep better than doing nothing or standard care. The therapy did not appear to make symptoms worse, though researchers need more information about its effects on pain and mood.
This systematic review provides the strongest available evidence synthesis on exercise therapy for ME/CFS, directly informing clinical decision-making and patient counseling. For patients, it offers clarity on whether graded exercise is safe and potentially beneficial; for researchers, it highlights evidence gaps requiring higher-quality investigation.
This review does not establish optimal exercise intensity, duration, or type for individual patients, nor does it clarify mechanisms of benefit or predict which patient subgroups may experience harm. The study cannot determine whether observed improvements persist long-term or whether specific exercise protocols prevent post-exertional malaise in all patients.
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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