Τίτλος:
The Association of Sedentary Behaviour and Cognitive Function in People
Without Dementia: A Coordinated Analysis Across Five Cohort Studies from
COSMIC
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
BackgroundBesides physical activity as a target for dementia prevention,
sedentary behaviour is hypothesized to be a potential target in its own
right. The rising number of persons with dementia and lack of any
effective treatment highlight the urgency to better understand these
modifiable risk factors. Therefore, we aimed to investigate whether
higher levels of sedentary behaviour are associated with reduced global
cognitive functioning and slower cognitive decline in older persons
without dementia.MethodsWe used five population cohorts from Greece,
Australia, USA, Japan, and Singapore (HELIAD, PATH, SALSA, SGS, and
SLAS2) from the Cohort Studies of Memory in an International Consortium.
In a coordinated analysis, we assessed the relationship between
sedentary behaviour and global cognitive function with the use of linear
mixed growth model analysis (mean follow-up range of 2.0-8.1
years).ResultsBaseline datasets combined 10,450 older adults without
dementia with a mean age range between cohorts of 66.7-75.1 years. After
adjusting for multiple covariates, no cross-sectional association
between sedentary behaviour and cognition was found in four studies. One
association was detected where more sedentary behaviour was
cross-sectionally linked to higher cognition levels (SLAS2, B=0.118
(0.075; 0.160), P<0.001). Longitudinally, there were no associations
between baseline sedentary behaviour and cognitive decline
(P>0.05).ConclusionsOverall, these results do not suggest an association
between total sedentary time and lower global cognition in older persons
without dementia at baseline or over time. We hypothesize that specific
types of sedentary behaviour may differentially influence cognition
which should be investigated further. For now, it is, however, too early
to establish undifferentiated sedentary time as a potential effective
target for minimizing cognitive decline in older adults without
dementia.
Συγγραφείς:
Maasakkers, Carlijn M.
Claassen, Jurgen A. H. R.
Gardiner, Paul
A.
Rikkert, Marcel G. M. Olde
Lipnicki, Darren M.
Scarmeas,
Nikolaos
Dardiotis, Efthimios
Yannakoulia, Mary
Anstey,
Kaarin J.
Cherbuin, Nicolas
Haan, Mary N.
Kumagai, Shuzo and
Narazaki, Kenji
Chen, Tao
Ng, Tze Pin
Gao, Qi
Nyunt, Ma
S. Z.
Crawford, John D.
Kochan, Nicole A.
Makkar, Steve R.
and Sachdev, Perminder S.
Thijssen, Dick H. J.
Melis, Rene J. F.
and COSMIC Collaborators
Περιοδικό:
Human Sport Medicine
Εκδότης:
Adis International Ltd
DOI:
10.1007/s40279-019-01186-7
