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Joint developmental trajectories and temporal precedence of physical function decline and cognitive deterioration: A
Frontiers in Psychology
|October 31, 2022
Summary
Physical function and cognition decline with age. Early intervention in physical decline can prevent cognitive impairment, promoting healthy aging and functional independence in older adults.
Area of Science:
- Gerontology
- Neuroscience
- Public Health
Background:
- Previous research focused on cognition's impact on physical function.
- The bidirectional relationship and temporal dynamics between physical function and cognition remain underexplored.
Purpose of the Study:
- To investigate the bidirectional interplay between physical function and cognition.
- To determine the temporal precedence in their predictive relationships using longitudinal data.
Main Methods:
- Utilized data from 1,365 participants in the Chinese Longitudinal Healthy Longevity Survey (2011-2018).
- Assessed physical function (Katz scale) and cognition (MMSE) at three time points.
- Employed latent growth models and autoregressive cross-lagged (ARCL) models to analyze trajectories and reciprocal relationships.
Main Results:
- Both physical function and cognition showed an annual decline.
- Baseline physical function positively predicted cognitive function from T1 to T2.
- Cognitive function at T2 predicted physical function from T2 to T3, indicating a temporal shift in the predictive relationship.
Conclusions:
- Physical function and cognitive function naturally decline over time in older adults.
- Intervening in physical dysfunction is crucial for preventing cognitive decline and maintaining independence.
- Regular assessments and personalized care are essential for promoting healthy aging.
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