Amyloid-ß Deposition Predicts Grocery Shopping Performance in Older Adults Without Cognitive Impairment.
J Alzheimers Dis
; 100(1): 53-75, 2024.
Article
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| MEDLINE
| ID: mdl-38820016
ABSTRACT
Background:
A screening tool sensitive to Alzheimer's disease (AD) risk factors, such as amyloid-ß (Aß) deposition, and subtle cognitive changes, best elicited by complex everyday tasks, is needed.Objective:
To determine if grocery shopping performance could differentiate older adults at elevated risk of developing AD (OAer), older adults at low risk of developing AD (OAlr), and young adults (YA), and if amount of Aß deposition could predict grocery shopping performance in older adults (OA).Methods:
Twenty-one OAer (78±5 years), 33 OAlr (78±5 years), and 28 YA (31±3 years) performed four grocery shopping trials, with the best and worst performances analyzed. Measures included trial time, number of correct items, number of grocery note fixations, and number of fixations and percentage of time fixating on the correct shelving unit, correct brand, and correct shelf. Linear mixed effects models compared measures by performance rank (best, worst) and group (OAer, OAlr, YA), and estimated the effect of Aß deposition on measures in OA.Results:
Relative to their best performance, OAer and OAlr exhibited more correct shelving unit fixations and correct brand fixations during their worst performance, while YA did not. Within OA's worst performance, greater Aß deposition was associated with a smaller percentage of time fixating on the correct shelving unit, correct shelf, and correct brand. Within OA, greater Aß deposition was associated with more grocery note fixations.Conclusions:
OA with elevated Aß deposition may exhibit subtle working memory impairments and less efficient visual search strategies while performing a cognitively demanding everyday task.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Péptidos beta-Amiloides
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Alzheimers Dis
Asunto de la revista:
GERIATRIA
/
NEUROLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos