Negative self-perceptions of aging (SPA) have been linked to poor physical health and functioning outcomes in late life, yet the direction of this relationship remain unclear. Using data from the Australian Longitudinal Study of Aging, we investigated the directionality of the dynamic relationship between self-perceptions of aging and physical functioning in 1,212 adults 65 years and above (mean age = 76.89, SD = 6.12) over 5 waves (up to 16 years). Bivariate Dual Change Score Models (BDCSM) revealed that the best fitting model for the data was that which allowed SPA to predict change in physical functioning over time lags of 1 year. The direction of the relationship remained after controlling for age, gender, partner status, residential care, number of medical conditions, self-rated health, and psychological well-being. Findings suggest that more positive SPA may be protective of decline in physical functioning in late life.
These findings can be used to develop effective and personalized interventions that increase motivators and reduce barriers by tailoring interventions to individual's dementia risk reduction literacy and motivations to change behaviours. Greater public-health promotion and education about risk and protective factors for dementia are also necessary to increase dementia health literacy and to reduce overall dementia prevalence.
Background and Aims: It is not yet understood how attitudes concerning dementia risk may affect motivation to change health behaviours and lifestyle. This study was designed to develop a reliable and valid theory-based measure to understand beliefs underpinning the lifestyle and health behavioural changes needed for dementia risk reduction. Methods: 617 participants aged ≥50 years completed a theory-based questionnaire, namely, the Motivation to Change Lifestyle and Health Behaviours for Dementia Risk Reduction (MCLHB-DRR) scale. The MCLHB-DRR consists of 53 items, reflecting seven subscales of the Health Belief Model. Results: Confirmatory factor analysis was performed and revealed that a seven-factor solution with 27 items fitted the data (comparative fit index = 0.920, root-mean-square error of approximation = 0.047) better than the original 53 items. Internal reliability (α = 0.608-0.864) and test-retest reliability (α = 0.552-0.776) were moderate to high. Measurement of invariance across gender and age was also demonstrated. Conclusions: These results propose that the MCLHB-DRR is a useful tool in assessing the beliefs and attitudes of males and females aged ≥50 years towards dementia risk reduction. This measure can be used in the development and evaluation of interventions aimed at dementia prevention.
These results show the three SRH items are not equivalent measures of health and cannot be used interchangeably. The reference point of the SRH item has a considerable influence on health perceptions of older adults as it encapsulates unique health information.
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