Physical Activity Decreases Somatic Symptom Distress in the Affect and Symptom Paradigm

Area of Science:

• Psychopathology
• Psychophysiology
• Behavioral Medicine

Background:

• Somatic symptom distress is a transdiagnostic factor in psychopathology.
• The Affect and Symptom Paradigm (ASP) experimentally provokes somatic symptoms via negative affect induction.
• Cardiorespiratory activation and body-focused attention may moderate somatic symptom responses.

Purpose of the Study:

• To investigate whether cardiorespiratory activation and body-focused attention modulate somatic symptoms within the ASP.
• To examine the effects of exercise (cycling) and rest on somatic symptom reports.
• To determine if baseline somatic symptom levels influence the response to physical activity.

Main Methods:

• A preregistered, cross-sectional study involving participants completing three ASPs.
• Interlaced conditions of cardiorespiratory activation (cycling) and rest.
• Random assignment to either a body-attention or distraction condition; measurement of heart rate, respiratory rate, and end-tidal CO2.

Main Results:

• Exercise significantly increased immediate somatic symptoms, while rest significantly decreased them.
• Individuals with higher baseline somatic symptoms showed a greater sustained decrease in symptoms after cycling compared to rest.
• The body-attention manipulation did not yield significant effects on somatic symptom reports.

Conclusions:

• Rest and exercise exert temporary modulatory effects on self-reported somatic symptoms.
• Physical activity demonstrates a particularly beneficial impact on symptom reduction for individuals with higher baseline somatic symptom distress.
• Findings align with predictive processing and active inference models in understanding symptom modulation.