Executive function, memory, and gait speed decline in well-functioning older adults.
J Gerontol A Biol Sci Med Sci
; 65(10): 1093-100, 2010 Oct.
Article
en En
| MEDLINE
| ID: mdl-20581339
ABSTRACT
BACKGROUND:
In community-dwelling older adults, global cognitive function predicts longitudinal gait speed decline. Few prospective studies have evaluated whether specific executive cognitive deficits in aging may account for gait slowing over time.METHODS:
Multiple cognitive tasks were administered at baseline in 909 participants in the Health, Aging, and Body Composition Study Cognitive Vitality Substudy (mean age 75.2 ± 2.8 years, 50.6% women, 48.4% black). Usual gait speed (m/s) over 20 minutes was assessed at baseline and over a 5-year follow-up.RESULTS:
Poorer performance in each cognitive task was cross-sectionally associated with slower gait independent of demographic and health characteristics. In longitudinal analyses, each 1 SD poorer performance in global function, verbal memory, and executive function was associated with 0.003-0.004 m/s greater gait speed decline per year (p =.03-.05) after adjustment for baseline gait speed, demographic, and health characteristics.CONCLUSIONS:
In this well-functioning cohort, several cognitive tasks were associated with gait speed cross-sectionally and predicted longitudinal gait speed decline. These data are consistent with a shared pathology underlying cognitive and motor declines but do not suggest that specific executive cognitive deficits account for slowing of usual gait in aging.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Envejecimiento
/
Función Ejecutiva
/
Marcha
/
Memoria
Tipo de estudio:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Aspecto:
Patient_preference
Límite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Gerontol A Biol Sci Med Sci
Asunto de la revista:
GERIATRIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Estados Unidos