Cognitive Reserve Attenuates 6-Year Decline in Executive Functioning after Stroke.

Area of Science:

• Neuroscience
• Gerontology
• Cognitive Psychology

Background:

• Stroke is a major cause of long-term disability, often leading to cognitive impairment.
• Executive functioning is crucial for daily life and is particularly vulnerable to age-related decline and cerebrovascular events.
• Cognitive reserve, built through lifelong activities, may influence resilience to brain damage.

Purpose of the Study:

• To examine how cognitive reserve modifies the longitudinal association between stroke history and executive function decline.
• To determine if factors like education, occupation, and leisure activities impact the relationship between stroke and cognitive aging.

Main Methods:

• Longitudinal analysis of 897 older adults (mean age 74.33 years) over a 6-year period.
• Assessment of executive functioning using the Trail Making Test (TMT) at two time points.
• Collection of self-reported data on education, occupation, leisure engagement, and stroke history.

Main Results:

• A significant interaction was observed between stroke history and leisure activity engagement on executive function changes.
• Individuals with low leisure activity engagement showed a significant decline in executive functioning (increased TMT time) following a stroke.
• Those with high leisure activity engagement did not exhibit this accelerated decline, suggesting a protective effect.

Conclusions:

• Lifelong engagement in leisure activities may serve as a protective factor against the cognitive consequences of stroke.
• Accumulated cognitive reserve through leisure pursuits can attenuate the detrimental effects of stroke on executive functioning.
• Interventions promoting leisure activities could be beneficial for stroke survivors to maintain cognitive health.