Abstract
INTRODUCTION
The number of cases of dementia attributable to physical inactivity remains unclear due to heterogeneity in physical inactivity definitions and statistical approaches used.
METHODS
Studies that used population-based samples to estimate the population attributable fraction (PAF) of physical inactivity for dementia were included in this review. Weighted PAFs were adjusted for communality among the risk factors (i.e., inactive persons may also share other risk factors) analyzed. Values were reported as percentage (%) of cases of dementia attributable to physical inactivity.
RESULTS
We included 22 studies. The overall impact of physical inactivity, defined by any criteria, on dementia ranged from 6.6% (95% CI: 3.6%, 9.6%; weighted) to 16.6% (95% CI: 14.4%, 18.9%; unweighted). Studies using the WHO criterion for physical inactivity estimated a higher unweighted impact (β = 7.3%; 95% CI: 2.0%, 12.6%) than studies using other criteria.
DISCUSSION
Conservatively, one in 15 cases of dementia may be attributable to physical inactivity, defined by any criteria.
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This post is Copyright: Natan Feter,
Jayne S. Leite,
Luísa Silveira da Silva,
Júlia Cassuriaga,
Danilo Paula,
Gabriela Wünsch Lopes,
Pedro Rodrigues Curi Hallal,
I‐Min Lee,
Airton José Rombaldi | August 14, 2023