Associations between physical activity trajectories and cognitive function in women 50 years and older: A nationally representative cohort study from the China Health and Retirement Longitudinal Study
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View abstract on PubMed
Summary
This summary is machine-generated.Maintaining moderate physical activity that increases over time is linked to better cognitive function in women aged 50-59. This association weakens in older age groups, highlighting the importance of early and consistent activity for brain health.
Area Of Science
- Gerontology
- Neuroscience
- Public Health
Background
- Cognitive decline is a significant concern in aging populations.
- Understanding the role of physical activity in maintaining cognitive function is crucial.
Purpose Of The Study
- To investigate the longitudinal relationship between changes in physical activity patterns and cognitive function in older women.
- To identify specific physical activity trajectories associated with cognitive health outcomes.
Main Methods
- Utilized data from the China Health and Retirement Longitudinal Study (2011-2020) with 2,760 women aged 50+.
- Employed group-based trajectory modeling to define physical activity patterns.
- Applied linear mixed-effects models to analyze cognitive function (episodic memory, mental intactness) in relation to these trajectories.
Main Results
- A 'Moderate-Increasing' physical activity trajectory was associated with higher global cognitive function and episodic memory in women aged 50-59.
- Conversely, 'High-Fluctuation' and 'Low-Fluctuation' groups showed cognitive decline.
- The positive association for the 'Moderate-Increasing' group was not significant in women aged 60 and older.
Conclusions
- A moderate, increasing physical activity level is beneficial for cognitive function and episodic memory in younger-older women (50-59).
- The protective effect of this activity pattern diminishes with advanced age.
- Interventions should consider age-specific physical activity recommendations for cognitive health maintenance.
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