Personality and reduced incidence of walking limitation in late life: findings from the Health, Aging, and Body Composition Study

Adherence to the Mediterranean Diet and Physical Resilience in Older Adults: The Seniors-ENRICA Cohort

BACKGROUND

No prior studies have studied the association between diet and physical resilience, thus our aim was to assess the association between the adherence to the Mediterranean diet and other healthy dietary patterns and physical resilience, assessed empirically as a trajectory through exposure to chronic and acute stressors, in older adults participating in the Seniors-ENRICA (The Study on Nutrition and Cardiovascular Risk in Spain) cohort.

METHODS

Data were assessed from 1301 individuals aged 60 and older, participating in the ENRICA prospective cohort study and recruited in 2008-2010 and followed up to 2012 (trial registration: NCT02804672). A Mediterranean Diet Adherence Screener score and the Alternate Healthy Eating Index 2010 were derived at baseline from a validated diet history. Health status was assessed at baseline and at the end of follow-up with a 52-item health Deficit Accumulation Index (DAI) including 4 domains (physical and cognitive function, mental health, self-rated health/vitality, and morbidity); higher DAI values indicate worse health. Physical resilience was defined as accumulating fewer health deficits than the expected age-related increase in DAI over follow-up, despite exposure to chronic and acute stressors.

RESULTS

Over a 3.2-year follow-up, 610 individuals showed physical resilience. In multivariate analyses, the odds ratio (95% confidence interval) of physical resilience for the highest versus lowest tertile (lowest adherence) of the Mediterranean Diet Adherence Screener score was 1.47 (1.10-1.98). The association held for those maintaining or improving the DAI over follow-up (over-resilience): 1.58 (1.10-2.26). Results were consistent in those with unintentional weight loss (2.21 [1.10-4.88]) or hospitalization (2.32 [1.18, 4.57]) as acute stressors.

CONCLUSION

In older adults, a higher adherence to the Mediterranean diet is associated with a greater likelihood of physical resilience.

Domain-specific self-perceptions of aging are associated with different gait patterns in older adults: a cross-sectional latent profile analysis

Background

Previous studies have pointed to the impact of self-perceptions of aging (SPA) on self-reported physical function in later life. However, less is known about associations of SPA with objectively measured physical function, especially gait. Research that examined other psychological variables and objectively measured gait has focused on single gait parameters such as gait speed, which seems to fall short for the complexity of this movement. Some approaches have proposed ways to identify gait patterns in specific patient groups, but not in community samples. Our goal was (a) to identify gait patterns based on a combination of important gait parameters in a community sample, and (b) to investigate differential associations of gain- and loss-related SPA with these gait patterns.

Methods

The study used an electronic walkway to assess gait parameters of 150 community dwelling adults aged 71–93 years (61.0% women) at their usual and maximum gait speed. SPA were assessed with a questionnaire. We used latent profile analysis (LPA) to identify groups exhibiting distinct gait patterns and binary logistic regression to investigate associations of SPA with these groups, controlling for personality traits, number of illnesses, age, gender, and education. To compare overall function between groups, a t-test for scores in the Short Physical Performance Battery was used.

Results

LPA revealed two distinct groups in both gait speed conditions. The fit group exhibited a stable, well-coordinated and faster gait pattern, while the functionally limited group’s gait pattern was less stable, less coordinated and slower. The odds of belonging to the functionally limited group were increased by loss-related SPA at usual gait speed, while the odds of belonging to the fit group were increased by gain-related SPA at individual maximum speed.

Conclusions

The findings (a) suggest LPA as a useful approach to investigate complex gait patterns considering several gait parameters simultaneously, and (b) provide first evidence for differential associations of gain- and loss-related SPA with gait patterns at usual and maximum gait speed. Intervention studies addressing gait in older adults should additionally address gain-related views on aging.

Development of a person-centered conceptual model of perceived fatigability

PURPOSE

Perceived fatigability, reflective of changes in fatigue intensity in the context of activity, has emerged as a potentially important clinical outcome and quality of life indicator. Unfortunately, the nature of perceived fatigability is not well characterized. The aim of this study is to define the characteristics of fatigability through the development of a conceptual model informed by input from key stakeholders who experience fatigability, including the general population, individuals with multiple sclerosis (MS), and individuals with fibromyalgia (FM).

METHODS

Thirteen focus groups were conducted with 101 participants; five groups with n = 44 individuals representing the general population, four groups with n = 26 individuals with MS, and four groups with n = 31 individuals with FM. Focus group data were qualitatively analyzed to identify major themes in the participants' characterizations of perceived fatigability.

RESULTS

Seven major themes were identified: general fatigability, physical fatigability, mental fatigability, emotional fatigability, moderators of fatigability, proactive and reactive behaviors, and temporal aspects of fatigability. Relative to those in the general sample, FM or MS groups more often described experiencing fatigue as a result of cognitive activity, use of proactive behaviors to manage fatigability, and sensory stimulation as exacerbating fatigability.

CONCLUSIONS

Fatigability is the complex and dynamic process of the development of physical, mental, and/or emotional fatigue. Trait- and state-like biological, psychological, social, and environmental moderators contribute to tremendous variability in fatigability (both between and within-person variability). Future research to further characterize fatigability across populations, test treatments for fatigability, and develop new measures of this construct are greatly needed.

Curiosity in old age: A possible key to achieving adaptive aging

Curiosity is a fundamental part of human motivation that supports a variety of human intellectual behaviors ranging from early learning in children to scientific discovery. However, there has been little attention paid to the role of curiosity in aging populations. By bringing together broad but sparse neuroscientific and psychological literature on curiosity and related concepts (e.g., novelty seeking in older adults), we propose that curiosity, although it declines with age, plays an important role in maintaining cognitive function, mental health, and physical health in older adults. We identify the dopaminergic reward system and the noradrenergic system as the key brain systems implicated in curiosity processing and discuss how these brain systems contribute to the relationship between curiosity and adaptive aging.

12-Year Associations of Health with Personality in the Second Half of Life

Abstract. We examined longitudinal associations between personality, objective (physician-rated) and self-rated health over 12 years in two German cohorts (midlife cohort, born 1950/52, nT0 = 502; late-life cohort, born 1930/32, nT0 = 500) from the Interdisciplinary Longitudinal Study of Adult Development (ILSE). Based on cross-lagged panel design analyses controlling for sex, education, depression, and cognitive abilities, we found that after 12 years better baseline objective health predicted lower Neuroticism and higher Agreeableness, whereas baseline Extraversion and Conscientiousness were positive predictors of later self-rated health. Our findings thus illustrate that the direction of longitudinal personality-health associations is dependent on whether objective or self-rated health is considered, whereas relations do not seem to be considerably different in midlife vs. in old age.

Personality and Frailty: Evidence From Four Samples

Frailty is a prevalent geriatric syndrome. Little is known about the psychological factors associated with this syndrome. Based on four large samples of older adults aged from 65 to 104 years old, the present study examined whether personality traits are related to frailty. High neuroticism, low conscientiousness, low extraversion, low openness and low agreeableness were related to higher frailty across samples. Longitudinal analysis conducted in one sample revealed that high neuroticism was associated with worsening frailty over an 8-year period. Higher frailty at baseline and over time was related to maladaptive personality changes. This study extends existing knowledge on the link between personality and health in older adults, by identifying the personality traits associated with frailty, a complex geriatric syndrome.

A cross-sectional study of the association between mobility test performance and personality among older adults

Background

Falls among the elderly are a major public health challenge. The Timed-Up and Go (TUG) test is commonly used to identify older adults with mobility limitations. This study explored the association between TUG test results and personality among community-dwelling older adults.

Methods

This cross-sectional study included 85 older adults. Personality was evaluated with the Five Factor Model. Times to complete the TUG as a single task (TUGST) alone and also with an additional cognitive task i.e., dual-task (DT), were recorded. Ordinary least squares OLS regression models were used to examine the associations between personality factors and both single DT TUG.

Results

Extraversion was found to be inversely associated with time to complete the TUGST (β = -.26, p < .05). Conscientiousness was inversely associated with TUGDT (β = -.24, p < .01).

Conclusions

Findings from this study highlight the relationship between personality and the TUG test. Specifically, older adults with high Extraversion completed the TUGST test more quickly than those who had lower measures of this trait and, people with high Conscientiousness completed the TUGDT tests more quickly. These findings may contribute to early identification of older adults at higher risk from mobility limitations and falls, and to developing personality-tailored interventions for fall prevention.

Physical Resilience in Older Adults: Systematic Review and Development of an Emerging Construct

BACKGROUND

Resilience has been described in the psychosocial literature as the capacity to maintain or regain well-being during or after adversity. Physical resilience is a newer concept that is highly relevant to successful aging. Our objective was to characterize the emerging construct of resilience as it pertains to physical health in older adults, and to identify gaps and opportunities to advance research in this area.

METHODS

We conducted a systematic review to identify English language papers published through January 2015 that apply the term "resilience" in relation to physical health in older adults. We applied a modified framework analysis to characterize themes in implicit or explicit definitions of physical resilience.

RESULTS

Of 1,078 abstracts identified, 49 articles met criteria for inclusion. Sixteen were letters or concept papers, and only one was an intervention study. Definitions of physical resilience spanned cellular to whole-person levels, incorporated many outcome measures, and represented three conceptual themes: resilience as a trait, trajectory, or characteristic/capacity.

CONCLUSIONS

Current biomedical literature lacks consensus on how to define and measure physical resilience. We propose a working definition of physical resilience at the whole person level: a characteristic which determines one's ability to resist or recover from functional decline following health stressor(s). We present a conceptual framework that encompasses the related construct of physiologic reserve. We discuss gaps and opportunities in measurement, interactions across contributors to physical resilience, and points of intervention.

The Role of Personality in Sport and Physical Activity

There is now good evidence that athletic success and participation in physical activity can be predicted by personality traits. In this article, we review new studies that have contributed to our understanding of these relationships and outline potential avenues of inquiry to support the development of personality-trait research in exercise and sport. Our review identified a number of novel findings from contemporary studies. In the context of sport performance, new studies have demonstrated that personality traits relate to long-term athletic success, interpersonal relationships, and athletes’ psychological states before, during, and after competitions. In the context of health-related exercise, new studies have demonstrated that personality traits relate to leisure-time sitting time, strength and mobility in old age, and unhealthy (addictive) exercise behaviors. There is also evidence that physical activity contributes to personality change. Our recommendations include a more targeted focus on adolescence (as this is the age of greatest change in personality and sport participation) and a greater consideration of consultant personality traits in applied research and professional practice (given their role in intervention effectiveness).

Association of personality with physical, social, and mental activities across the lifespan: Findings from US and French samples

Despite evidence for its health-related benefits, little is known on the psychological predictors of the participation in leisure activities across the lifespan. Therefore, this study aimed to identify whether personality is associated with a variety of different types of activities, involving physical, cognitive, and social components. The samples included individuals from the second wave of the National Study of Midlife in the United States (N = 3,396) and community-dwelling French individuals (N = 2,917) aged between 30 and 84. Both samples completed measures of the five-factor model of personality. To create an activity index, we combined the physical, social, and cognitive (games and developmental) activities performed at least once a month. In both samples, individuals who scored higher on extraversion and openness were more likely to engage in a variety of activity types. The findings were consistent across two samples from different western societies and suggest that extraversion and openness contribute to social, cognitive, and physical functioning across the lifespan.

Personality factors in the Long Life Family Study

OBJECTIVES

To evaluate personality profiles of Long Life Family Study participants relative to population norms and offspring of centenarians from the New England Centenarian Study. METHOD Personality domains of agreeableness, conscientiousness, extraversion, neuroticism, and openness were assessed with the NEO Five-Factor Inventory in 4,937 participants from the Long Life Family Study (mean age 70 years). A linear mixed model of age and gender was implemented adjusting for other covariates.

RESULTS

A significant age trend was found in all five personality domains. On average, the offspring generation of long-lived families scored low in neuroticism, high in extraversion, and within average values for the other three domains. Older participants tended to score higher in neuroticism and lower in the other domains compared with younger participants, but the estimated scores generally remained within average population values. No significant differences were found between long-lived family members and their spouses.

DISCUSSION

Personality factors and more specifically low neuroticism and high extraversion may be important for achieving extreme old age. In addition, personality scores of family members were not significantly different from those of their spouses, suggesting that environmental factors may play a significant role in addition to genetic factors.