To investigate whether aerobic exercise is associated with reduced subthreshold depressive symptoms in adolescents and to explore the mediation of these effects by EEG-based neural network features.
Approach:
Study Design: Secondary analysis of a 12-month, 2-arm cluster RCT evaluating moderate-intensity aerobic exercise effects on depression and cognition in adolescents.
Participants: Students aged 12 to 17 years with subthreshold depressive symptoms and valid EEG data were included.
Intervention: Aerobic exercise group engaged in a 12-month program with an initial 6-month supervised phase followed by a 6-month unsupervised maintenance phase.
Control Group: Control group received 6 psychoeducation sessions over 12 months.
Key Findings:
Aerobic exercise significantly reduced subthreshold depressive symptoms compared to the psychoeducation control.
Changes in EEG-derived functional connectivity and network topological features mediated the exercise effects.
Interpretation:
The study aims to investigate the relationship between aerobic exercise and depressive symptoms in adolescents, focusing on EEG-based neural mechanisms.
Limitations:
The study relies on secondary analysis of existing data, which may limit the scope of findings.
Potential confounding factors related to participant selection and adherence to the exercise program.
Conclusion:
The findings provide data on the role of aerobic exercise in managing subthreshold depression in adolescents and the underlying neural mechanisms.
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