Graded exercise therapy for myalgic encephalomyelitis/chronic fatigue syndrome is not effective and unsafe. Re-analysis of a Cochrane review. — CFSMEATLAS
Graded exercise therapy for myalgic encephalomyelitis/chronic fatigue syndrome is not effective and unsafe. Re-analysis of a Cochrane review.
Vink, Mark, Vink-Niese, Alexandra · Health psychology open · 2018 · DOI
Quick Summary
This study re-examined a major 2017 review that had concluded graded exercise therapy (GET) was helpful for ME/CFS. The researchers found serious problems with that review's methods and conclusions. They concluded there is no reliable evidence that GET works for ME/CFS, and safety concerns were not properly reported in the original trials.
Why It Matters
This analysis challenges a widely-cited recommendation for ME/CFS treatment and raises concerns about how trials are evaluated and reported. For patients, it supports concerns about GET safety and effectiveness, potentially influencing clinical guidelines and treatment decisions.
Observed Findings
Flaws were identified in the 2017 Cochrane review's methodology and interpretation
Adverse events and harms were inadequately reported in the original GET trials
Objective outcome measures in the trials did not support GET effectiveness
The original review's conclusions were not supported by the underlying trial data
Safety concerns could not be adequately assessed due to incomplete harm reporting
Inferred Conclusions
Graded exercise therapy lacks evidence of effectiveness for ME/CFS based on objective outcome data
The safety profile of GET cannot be established due to inadequate adverse event reporting in trials
Systematic reviews must be critically re-evaluated when methodological concerns are identified
Treatment recommendations for ME/CFS should not rely on flawed evidence synthesis
Remaining Questions
What are the most appropriate exercise and rehabilitation approaches, if any, for ME/CFS patients?
What objective measures would best capture treatment response and safety in ME/CFS trials?
What This Study Does Not Prove
This study does not establish what effective treatments for ME/CFS might be, nor does it prove GET causes harm in all patients. It also does not evaluate other exercise-based or rehabilitation approaches that might differ from GET. The re-analysis is limited to critiquing existing trial data rather than conducting new patient assessments.