Cognitive training sustains mental sharpness in exhaustion disorder at 4.5-year follow-up

Participants completed cognitive assessments at baseline, immediately after the 8-week interventions, at 1 year, and at 4.5 years. The CCT group showed sustained improvements on a global cognitive score, a trained updating task (working memory), and episodic memory performance, with no decline between the 1-year and 4.5-year assessments. Notably, aerobic training did not produce lasting cognitive benefits beyond the treatment period. Both groups reported improvement in self-reported memory problems at 4.5 years, though this finding was inconsistent across measures. The study authors note that psychological improvements observed at 4.5 years (reductions in burnout and anxiety in the AT group, improved work ability) were not present at 1 year, raising the possibility these reflect selective dropout rather than true delayed treatment effects. The main limitation is the substantial loss of participants—fewer than half returned at 4.5 years—which weakens confidence in the long-term claims.

The cognitive gains in the CCT group were specific to trained abilities: the working memory task showed robust stability, while episodic memory (recall of events and information) also remained elevated. Interestingly, aerobic training, which improved cognition immediately after the programme, did not maintain those gains over time—suggesting that cognitive training may have different long-term neural staying power than exercise in this population. The authors note a critical caveat: the 42% attrition rate by 4.5 years means sicker or less-improved participants may have dropped out preferentially, potentially inflating estimates of long-term benefit. The psychological findings (reduced burnout, anxiety, and improved work return) merit caution for the same reason. This contrasts with shorter-term RCTs where CCT in depression or burnout shows more consistent psychological effects; the mechanism linking cognition-specific training to sustained cognitive (but not reliably psychological) recovery in ED remains unclear.