Mediators during a Multimodal intervention for stress-induced exhaustion disorder

Area of Science:

• Psychology
• Clinical Psychology
• Behavioral Medicine

Background:

• Understanding psychological mechanisms in exhaustion disorder (ED) treatment is limited.
• Cognitive behavioral therapy (CBT) principles form the basis of multimodal interventions for ED.
• Exploratory analysis is needed to understand treatment processes.

Purpose of the Study:

• To explore if sleep concerns, pathological worry, perfectionistic concerns, and psychological flexibility mediate changes in exhaustion symptoms during ED treatment.
• To investigate the directionality of change between these psychological factors and exhaustion symptoms.

Main Methods:

• A multimodal intervention based on CBT principles was used for participants with ED (N=913).
• Data were collected at three time points.
• Mediation was analyzed using a two-criteria model: linear mixed-effects models and random intercepts cross-lagged panel modeling.

Main Results:

• Criterion one for mediation was met, showing significant associations between treatment time, mediators, and exhaustion symptoms.
• Criterion two was not met; changes in mediators did not precede changes in exhaustion symptoms.
• Changes in mediators appeared to be a consequence of changes in exhaustion symptoms.

Conclusions:

• Mediation by sleep concerns, pathological worry, perfectionistic concerns, and psychological flexibility was not established in ED treatment.
• Improvements in these psychological factors seem to occur alongside, rather than drive, the reduction in exhaustion symptoms.
• Exhaustion symptom improvement may be the primary driver of positive changes in associated psychological factors during treatment.