Exercise for Mental Well-Being: Exploring Neurobiological Advances and Intervention Effects in Depression

Area of Science:

• Neuroscience
• Molecular Biology
• Exercise Physiology

Background:

• Depression is a prevalent mental disorder characterized by persistent sadness and anhedonia.
• Exercise is a recognized intervention for depression, yet its precise molecular mechanisms remain incompletely understood.

Purpose of the Study:

• To synthesize current knowledge on the molecular, neural, and physiological mechanisms of exercise's antidepressant effects.
• To review exercise interventions for depression management.

Main Methods:

• A narrative review of existing literature on exercise and depression was conducted.

Main Results:

• Exercise influences peripheral tryptophan metabolism, central inflammation, and brain-derived neurotrophic factors via PGC-1α in skeletal muscle.
• Uncarboxylated osteocalcin mediates bone-brain crosstalk; exercise modulates brain-gut peptides, cytokines, neurotransmitters, and inflammatory pathways.
• Aerobic exercise, 3-5 times weekly at medium-high intensity, is recommended.

Conclusions:

• Exercise therapy shows significant potential for managing depression, supported by elucidated molecular and neural mechanisms.
• Understanding these pathways may lead to novel therapeutic strategies for depression.