Relationship Between Cognitive Performance, Physical Activity, and Socio-Demographic/Individual Characteristics Among Aging Americans.
J Alzheimers Dis
; 92(3): 975-987, 2023.
Article
in En
| MEDLINE
| ID: mdl-36847008
ABSTRACT
BACKGROUND:
Physical activity (PA) has emerged as a promising approach to delay Alzheimer's disease and related dementias, but the optimal intensity of PA to improve cognitive health remains unknown.OBJECTIVE:
To evaluate the association between duration and intensity of PA and cognitive domains (executive function, processing speed, and memory) in aging Americans.METHODS:
Linear regressions in hierarchical blocks for variable adjustment and the size of effect (η2) were analyzed by using the data of 2,377 adults (ageâ=â69.3±6.7 years) from the NHANES 2011-2014.RESULTS:
Participants with 3-6âh/week of vigorous- andâ>â1âh/week of moderate-intensity PA scored significantly higher in executive function and processing speed domains of cognition compared to inactive peers (η2â=â0.005 & 0.007 respectively, pâ<â0.05). After adjustment, the beneficial effects of 1-3âh /week of vigorous-intensity PA became trivial for delayed recall memory domain test scores (ß=â0.33; 95% CI -0.01,0.67; η2â=â0.002; pâ=â0.56). There was no linear dose-response relationship between the cognitive test scores and weekly moderate-intensity of PA. Interestingly, higher handgrip strength and higher late-life body mass index were associated with a higher performance across all cognitive domains.CONCLUSION:
Our study supports habitual PA with superior cognition health in some but not all domains among older adults. Furthermore, increased muscle strength and higher late-life adiposity may also impact cognition.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Aging
/
Hand Strength
Type of study:
Risk_factors_studies
Limits:
Aged
/
Humans
Language:
En
Journal:
J Alzheimers Dis
Journal subject:
GERIATRIA
/
NEUROLOGIA
Year:
2023
Document type:
Article
Affiliation country:
United States