Long-lasting active lifestyle and successful cognitive aging in a healthy elderly population: The PROOF cohort - 25/11/17
on behalf of the
PROOF group study
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Abstract |
Objectives |
The aim of this study was to determine whether cognitive reserve in the elderly affects the evolution of cognitive performance and what its relationship is with active lifestyles in later life.
Methods |
Cognitive performance was evaluated at baseline and 8 years later in 543 participants of the PROOF cohort, initially aged 67 years. Subjects were categorized as Cognitively Elite (CE), Cognitively Normal (CN) or Cognitively Impaired (CI) at each evaluation. At follow-up, demographic data and lifestyle, including social, intellectual and physical behaviors, were collected by questionnaires.
Results |
As much as 69% (n=375) remained unchanged, while 25.5% (n=138) decreased and 5.5% (n=30) improved. When present, the reduction in cognitive status was most often limited to one level, but was dependent on the initial level, affecting up to 73% of the initially CN, but only 58% of the initially CE. Cognitive stability was significantly associated with the degree of social engagement at follow-up (CE: P=0.009; CN: P=0.025).
Conclusion |
In the healthy elderly, high cognitive ability predicts both cognitive ability and social involvement in later life. Cognitive decline by only one level may also extend the time to reach impairment, underlining the importance of the so-called cognitive reserve.
Le texte complet de cet article est disponible en PDF.Keywords : Successful cognitive aging, Cognitive reserve, Lifestyle activities, Longitudinal study, Healthy elderly
Abbreviations : CE, CN, CI, HCI, IAI, MMSE, PAI, PROOF, QoL, SAI
Plan
☆ | Clinical trial registration: NCT00759304 and NCT00766584. |
Vol 173 - N° 10
P. 637-644 - décembre 2017 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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