Self-efficacy is independently associated with brain volume in older women

Jennifer C. Davis, Lindsay S. Nagamatsu, Chun Liang Hsu, B. Lynn Beattie, Teresa Liu-Ambrose

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Background: ageing is highly associated with neurodegeneration and atrophy of the brain. Evidence suggests that personality variables are risk factors for reduced brain volume. We examine whether falls-related self-efficacy is independently associated with brain volume.Method: a cross-sectional analysis of whether falls-related self-efficacy is independently associated with brain volumes (total, grey and white matter). Three multivariate regression models were constructed. Covariates included in the models were age, global cognition, systolic blood pressure, functional comorbidity index and current physical activity level. MRI scans were acquired from 79 community-dwelling senior women aged 65-75 years old. Falls-related self-efficacy was assessed by the activities-specific balance confidence (ABC) scale. Results: after accounting for covariates, falls-related self-efficacy was independently associated with both total brain volume and total grey matter volume. The final model for total brain volume accounted for 17% of the variance, with the ABC score accounting for 8%. For total grey matter volume, the final model accounted for 24% of the variance, with the ABC score accounting for 10%.Conclusion: we provide novel evidence that falls-related self-efficacy, a modifiable risk factor for healthy ageing, is positively associated with total brain volume and total grey matter volume.

Original languageEnglish
Article numberafs029
Pages (from-to)495-501
Number of pages7
JournalAge and Ageing
Volume41
Issue number4
DOIs
Publication statusPublished - Jul 2012
Externally publishedYes

Keywords

  • Brain volume
  • Elderly
  • Older women
  • Self-efficacy

ASJC Scopus subject areas

  • Ageing
  • Geriatrics and Gerontology

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