[Cognitive impairment in long COVID: advances in pathological mechanisms and exercise rehabilitation interventions]

Since the outbreak of the novel coronavirus (COVID-19) pandemic, long-term effects of the virus, known as long-COVID, has emerged. It is a chronic syndrome following infection. It is estimated that around 20% of COVID-19 survivors worldwide experience cognitive dysfunction. This is characterized by impairments in executive function, attention, memory, and other cognitive domains, and can have a significant impact on quality of life and social functioning. This article systematically reviewed recent studies and summarized the potential pathological mechanisms underlying cognitive dysfunction in long COVID, including neuroinflammation, glial cell dysregulation, involvement of the olfactory pathway and limbic system, autoimmunity and viral reactivation, cerebrovascular and blood-brain barrier damage, as well as abnormalities in neurotrophic factors and synaptic plasticity. Additionally, it explored the effects of exercise rehabilitation and multidimensional comprehensive rehabilitation strategies. The aim was to provide theoretical and scientific foundations for optimizing intervention programs for cognitive dysfunction in long COVID and for formulating clinical guidelines and public health policies.