Physical exercise, cognition, and brain health in aging

Area of Science:

• Neuroscience
• Gerontology
• Exercise Science

Background:

• Aging is associated with cognitive and brain health decline.
• Exercise training is a recognized strategy to mitigate age-related cognitive impairment.
• Existing evidence suggests exercise benefits both unimpaired and impaired older adults, but effects are often modest.

Purpose of the Study:

• To review the impact of exercise on cognitive and brain health in healthy aging and in individuals at risk for cognitive impairment.
• To examine neuroplastic adaptations and neurobiological mechanisms underlying exercise's effects on the brain.
• To identify future research directions for optimizing exercise interventions for brain health.

Main Methods:

• Systematic reviews and meta-analyses were considered.
• Evidence synthesis on exercise interventions and cognitive/brain outcomes.
• Review of studies on neuroplasticity and neurobiological mechanisms related to exercise.

Main Results:

• Exercise training demonstrates beneficial effects on cognitive and brain health across aging populations.
• The magnitude of exercise benefits is influenced by training parameters, participant characteristics, and study design.
• Exercise induces neuroplastic adaptations with potential neurobiological underpinnings.

Conclusions:

• Exercise is a vital strategy for maintaining cognitive function and brain health during aging.
• Further research is needed to explore underlying neurobiological mechanisms and optimize exercise protocols.
• Inclusion of diverse and under-represented populations in future studies is crucial.