Walking stabilizes cognitive functioning in Alzheimer's disease (AD) across one year

Area of Science:

• Neuroscience
• Gerontology
• Public Health

Background:

• Alzheimer's disease (AD) poses a significant public health challenge, impacting cognition, mood, and daily functioning.
• Exercise is recognized for its potential to positively influence cognitive and emotional states.
• Early-stage AD patients often experience declines in physical activity, cognition, and mood over time.

Purpose of the Study:

• To investigate the relationship between physical activity levels and mood in early-stage Alzheimer's disease patients.
• To examine how exercise, specifically walking, affects cognitive decline and mood over a one-year period in AD patients.

Main Methods:

• A longitudinal study involving 104 early-stage AD patients and their caregivers.
• Cognitive function assessed using the Mini-Mental State Examination (MMSE).
• Physical activity, mood, and functional abilities measured using the Yale Physical Activity Survey (YALE), Profile of Mood States (POMS), and other validated scales.

Main Results:

• Overall physical activity levels decreased over the year, correlating with declines in global cognition and mood.
• Patients categorized as 'Active' (engaged in weekly walking) showed attenuated cognitive decline compared to 'Sedentary' patients.
• Active AD patients walking over 2 hours per week demonstrated significant improvements in MMSE scores.

Conclusions:

• Physical activity, especially regular walking, may be a viable strategy to mitigate cognitive decline in early-stage AD.
• Further structured clinical trials are needed to explore the neurobiological mechanisms and optimal exercise parameters for AD patients.