The bidirectional relationship between brain structure and physical activity: A longitudinal analysis in the UK Biobank.
Neurobiol Aging
; 138: 1-9, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38460471
ABSTRACT
Physical activity is a protective factor against brain atrophy, while loss of brain volume could also be a determinant of physical activity. Therefore, we aimed to explore the bidirectional association of physical activity with brain structures in middle-aged and older adults from the UK Biobank. Overall, 3027 participants (62.45 ± 7.27 years old, 51.3% females) had data at two time points. Hippocampal volume was associated with total (ß=0.048, pFDR=0.016) and household (ß=0.075, pFDR<0.001) physical activity. Global fractional anisotropy (ß=0.042, pFDR=0.028) was also associated with household physical activity. In the opposite direction, walking was negatively associated with white matter volume (ß=-0.026, pFDR=0.008). All these associations were confirmed by the linear mixed models. Interestingly, sports at baseline were linked to hippocampal and frontal cortex volumes at follow-up but these associations disappeared after adjusting for multiple comparisons (pall>0.104). In conclusion, we found more consistent evidence that a healthier brain structure predicted higher physical activity levels than for the inverse, more established relationship.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Substância Branca
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Biobanco do Reino Unido
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article