The Role of Ethnic and Racial Disparities in Mobility and Physical Function in Older Adults

Racial-ethnic differences in the associations between functional disabilities and subsequent depression among community-dwelling midlife and older adults in the US

BACKGROUND

The intersection of race/ethnicity with disability is a critical dimension of mental health outcomes in later ages that remains under-investigated.

OBJECTIVE

We examined the role of race-ethnicity in moderating the associations between functional disabilities and subsequent depression among Americans 51 and older and stratified into the two age-groups of midlife (51-64) and older adults (≥65).

METHODS

Using a nationally representative sample of community-dwelling Americans (≥51; n = 7475) in the 2016-2018 Health and Retirement Study, we conducted bivariate and multivariable regression analyses. Racial-ethnic groups included non-Hispanic (NH) Black, Hispanic, and NH White and a binary (0/1) outcome defined subsequent depression in 2018. The total number of difficulties on the Nagi, Lawton, and Katz disability scales represented baseline (2016) functional disabilities with a secondary four-level (no/mild/severe with assistance/severe without assistance) disability indicator incorporated to examine the role of assistance with daily living.

RESULTS

Across age-groups, subsequent depression was significantly more prevalent among NH Whites with functional disabilities compared to counterparts reporting no disabilities. Compared to NH Black and Hispanic counterparts, midlife NH Whites were three times more likely to report subsequent depression with each unit increase in the functional disability score, after adjusting for covariates. However, we observed no such racial-ethnic differences among older adults. Among the 51+ severe with no assistance group, adjusted odds of subsequent depression among NH Whites was 2.5 times higher than minority counterparts.

CONCLUSION

Health programs and environmental adaptations supporting functional care needs in later ages could be beneficial for improving mental health of adults with disabilities.

Racial and ethnic differences in unmet needs among older adults receiving publicly-funded home and community-based services

BACKGROUND

Unmet need for home and community-based services (HCBS) may disparately impact older adults from racial and ethnic minoritized groups. We examined racial and ethnic differences in unmet need for HCBS among consumers ≥65 years using publicly funded HCBS.

METHODS

We analyzed the National Core Indicators-Aging and Disability survey data (2015-2019) from 21,739 community-dwelling HCBS consumers aged ≥65 years in 23 participating states. Outcome measures included self-reported unmet need in six service types (i.e., personal care, homemaker/chore, delivered meals, adult day services, transportation, and caregiver support). Racial and ethnic groups included non-Hispanic Black, Asian, non-Hispanic White, Hispanic, and multiracial groups. Logistic regression models examined associations between race and ethnicity and unmet need, adjusting for sociodemographic, health, and HCBS program (i.e., Medicaid, Older Americans Act [OAA], Program for All-Inclusive Care for the Elderly [PACE]) characteristics, and use of specific service types.

RESULTS

Among 21,739 respondents, 23.3% were Black, 3.4% were Asian, 10.8% were Hispanic, 58.8% were non-Hispanic White, and 3.7% were multiracial or identified with other races/ethnicities. Asian and Black consumers had higher odds of reporting unmet need in personal care than White consumers (adjusted odds ratio [aOR], 1.45, p value < 0.01; and aOR, 1.25, p < 0.001, respectively). Asian and Black consumers had significantly higher odds of unmet need in adult day services versus White consumers (aOR, 1.94, p < 0.001 and aOR, 1.39, p < 0.001, respectively). Black consumers had higher odds of unmet need versus non-Hispanic White consumers in meal delivery and caregiver support services (aOR, 1.29; p < 0.01; and aOR 1.26, p < 0.05, respectively). Race and ethnicity were not significantly associated with experiencing unmet need for homemaker/chore or transportation services.

CONCLUSIONS

Future research should identify driving forces in disparities in unmet need to develop culturally appropriate solutions.

Care Partners' Engagement in Preventing Falls for Community-Dwelling Older People With Dementia

BACKGROUND AND OBJECTIVES

Little is known about how to prevent falls in community-dwelling older people with dementia. Although their care partners adopt various behaviors to prevent their falls, it is unclear if these behaviors reduce falls for those with different levels of fall risk.

RESEARCH DESIGN AND METHODS

Linking the 2015 and 2016 National Health and Aging Trends Study and the 2015 National Study of Caregiving (NSOC), we identified 390 community-dwelling older people with dementia with 607 care partners. We selected 26 NSOC items representing fall risk management (FRM) behaviors. We examined the prevalence and dimensionality of these behaviors and investigated associations between care partners' behaviors in 2015 (T1) and older people's falls in 2016 (T2) stratified by their fall incidence at T1, adjusting for covariates.

RESULTS

Five domains of FRM were identified: mobility and safety assistance, medical service coordination, health management, social service coordination, and accommodation. For those who did not fall at T1, mobility and safety assistance and social service coordination were each associated with an increased risk of falling at T2 (adjusted incidence rate ratio [aIRR] = 1.39, 95% confidence interval [CI] = 1.06-1.83, p = .019, aIRR = 1.25, 95% CI = 1.01-1.55, p = .043). For those who had fallen at T1, social service coordination was associated with a decreased risk of falling at T2 (aIRR = 0.83, 95% CI = 0.73-0.94, p = .004).

DISCUSSION AND IMPLICATIONS

The different impacts of dementia care partners' FRM behaviors emphasize the need to address specific behaviors when involving care partners in preventing falls for older people with dementia at varying levels of fall risk.

Racial/Ethnic Differences in Self-Reported Upper Limb Limitations Among U.S. Older Adults

BACKGROUND

The development of disability related to activities of daily living (ADL) is of great concern in the aging population, particularly for Hispanic and Non-Hispanic (NH) Black older adults, where disability prevalence is greater compared to NH Whites. ADL-disability is typically measured across many functional tasks without differentiating upper- versus lower-limb limitations, hindering our understanding of disability burden. Despite the importance of the upper limbs for completing ADL and known age-related declines in function, racial/ethnic differences in upper limb function remain largely unknown.

METHODS

We identified 4 292 NH White, NH Black, and Mexican American older adults (≥65) from the 2011-2018 waves of the National Health and Nutrition Examination Survey (NHANES). We classified participants as having a limitation based on their ability to complete 5 upper-limb tasks (preparing meals, eating, dressing, reaching overhead, and grasping small objects) and compared limitation rates across racial/ethnic groups.

RESULTS

Compared to NH Whites, NH Black older adults had significantly greater odds of reporting difficulties preparing meals (odds ratio [OR]: 1.36, 95% confidence interval [95% CI]: 1.01, 1.86) and dressing (OR: 1.55, 95% CI: 1.19, 2.02), while Mexican Americans had greater difficulty preparing meals (OR: 1.70, 95% CI: 1.12, 2.58), dressing (OR: 1.63, 95% CI: 1.12, 2.36), and grasping small objects (OR: 1.48, 95% CI: 1.06, 2.07).

CONCLUSIONS

Our results demonstrate differences in self-reported upper limb ADL-disability across racial/ethnic groups, particularly for Mexican American older adults. Such findings underscore the need for routine monitoring of upper limb function throughout adulthood to identify limitations and target therapeutic interventions before independence is compromised.

"You Just Have to Keep It Movin':" Perceptions of Physical Function Limitations in an African American Health Ministry

Physical function (PF) limitations are common in aging. However, there is a dearth of interventions focused on addressing PF limitations in community-based settings, particularly in minoritized communities. To guide intervention development, we conducted focus groups to understand perceptions of PF limitations, gauge intervention interest, and identify potential intervention strategies as part of a large health partnership of African American churches in Chicago, IL. Participants were age 40+ years with self-reported PF limitations. Focus groups (N=6 focus groups; N=40 participants) were audio recorded, transcribed, and analyzed using thematic analysis methods.Six themes were identified: (1) causes of PF limitations, (2) impact of PF limitations, (3) terminology and communication, (4) adaptations and treatments, (5) faith and resilience, and (6) prior program experiences. Participants described how PF limitations affected their ability to live a full life and play an active role in their family, church, and community. Faith and prayer aided in coping with limitations and pain. Participants expressed that it is important to keep moving, both from an emotional (not giving up) and physical (to prevent further exacerbation of limitations) standpoint. Some participants shared adaptation and modification strategies, but there were overall frustrations with communicating regarding PF limitations and obtaining medical care for them. Participants expressed that they would like to have programs in their church focused on improving PF (including physical activity), particularly as their communities often lacked resources conducive to being active. Community-based programs focusing on reducing PF limitations are needed, and the church is a potentially receptive setting.

Disparities in Stress Exposure and Later-Life Disability

Background and Objectives

Drawing from cumulative inequality theory and the weathering hypothesis, this study examined the relationship between life-course stress exposure (measured cumulatively and by domains) and the onset of disability in later life among White, Black, U.S.-born Hispanic, and foreign-born Hispanic older adults.

Research Design and Methods

Cross-sectional and longitudinal models were estimated using nationally representative data from the Health and Retirement Study (N = 11,483). We used logistic regression models to examine associations between stress exposure and Wave 1 disability (i.e., occurrence), and Weibull-accelerated failure-time models to examine the relationship between stress exposure and age of onset of disability 12-14 years later (i.e., incidence). We tested for moderation between stress and disability by race, ethnicity, and Hispanic nativity.

Results

At Wave 1, higher odds of disability occurrence were associated with cumulative stress burden (CSB; odds ratio [OR] = 4.93, 95% confidence interval [CI]: 2.95-8.23). In a model specifying domains of stressors, disability occurrence was associated with childhood financial strain (OR = 1.22, CI: 1.01-1.46), lifetime traumatic events (OR = 1.92, CI: 1.41-2.62), neighborhood disadvantage (OR = 1.32, CI: 1.01-1.73), and major lifetime discrimination (OR = 1.64, CI: 1.12-2.41). Over time, earlier onset of disability was associated with CSB (β = -0.39), childhood traumatic events (β = -0.16), adult financial strain (β = -0.17), everyday discrimination (β = -0.15), and major lifetime discrimination (β = -0.13). The effect of childhood traumatic events on the transition to disability was stronger for U.S.-born Hispanic adults than White adults (occurring 33% earlier).

Discussion and Implications

To reduce racial, ethnic, and nativity disparities in disability, it is important to consider the historical and structural disadvantages associated with stress exposure across the life course. It is also important to acknowledge that nativity influences stratification processes associated with disparities in racial and ethnic health trajectories.

Motivations for investigating health inequities in observational epidemiology: a content analysis of 320 studies

OBJECTIVES

To enhance equity in clinical and epidemiological research, it is crucial to understand researcher motivations for conducting equity-relevant studies. Therefore, we evaluated author motivations in a randomly selected sample of equity-relevant observational studies published during the COVID-19 pandemic.

STUDY DESIGN AND SETTING

We searched MEDLINE for studies from 2020 to 2022, resulting in 16,828 references. We randomly selected 320 studies purposefully sampled across income setting (high vs low-middle-income), COVID-19 topic (vs non-COVID-19), and focus on populations experiencing inequities. Of those, 206 explicitly mentioned motivations which we analyzed thematically. We used discourse analysis to investigate the reasons behind emerging motivations.

RESULTS

We identified the following motivations: (1) examining health disparities, (2) tackling social determinants to improve access, and (3) addressing knowledge gaps in health equity. Discourse analysis showed motivations stem from commitments to social justice and recognizing the importance of highlighting it in research. Other discourses included aspiring to improve health-care efficiency, wanting to understand cause-effect relationships, and seeking to contribute to an equitable evidence base.

CONCLUSION

Understanding researchers' motivations for assessing health equity can aid in developing guidance that tailors to their needs. We will consider these motivations in developing and sharing equity guidance to better meet researchers' needs.

Race and ethnic differences in physical activity, osteopenia, and osteoporosis: results from NHANES 2009-2010, 2013-2014, 2017-2018

This study aimed to determine current physical activity trends association with bone density in a racial and ethnically diverse sample of older adults. We found that those engaged in no and some physical activity had lower femoral BMD when compared to those that met the physical activity recommendation.

PURPOSE

Most older adults do not engage in the recommended levels of physical activity to improve health, and there are racial and ethnic differences in physical activity participation. This study aims to evaluate whether meeting the physical activity recommendation is related to osteopenia and osteoporosis in a racially and ethnically diverse sample of older adults.

METHODS

Femoral neck bone mineral density (BMD) data from the National Health and Nutrition Examination Survey (NHANES 2009-2010, 2013-2014, 2017-2018) was obtained from 5252adults 60-80 years old. Self-reported physical activity was categorized into met recommendation, some physical activity, and no physical activity. We used linear regression models to examine the association between physical activity and BMD for each race and ethnic group adjusting for sociodemographics and other selected variables.

RESULTS

Non-Latino Blacks (NLB) and Latinos reported the lowest prevalence of meeting the physical activity recommendation, compared with Non-Latino Whites (NLW) (40.0%, 44.0%, and 51.4%, respectively; p < 0.0001). Further, NLB and Latinos had a lower prevalence of osteoporosis when compared to NLW (5.4%, 7.3%, and 9.1% respectively; p < 0.0001). There was a 0.03 g/cm2 difference in BMD between those who met the physical activity recommendation when compared to the no physical activity group; however, this decreased after adjusting for selected covariates.

CONCLUSION

Considering the prevalence and burden of osteopenia and osteoporosis, and projected increases in the racial and ethnic diversity of the older population, more research is needed to further understand the association between meeting the physical activity recommendation and bone health among racial and ethnic diverse older adults.

Epigenetic age and socioeconomic status contribute to racial disparities in cognitive and functional aging between Black and White older Americans

Epigenetic age, a biological aging marker measured by DNA methylation, is a potential mechanism by which social factors drive disparities in age-related health. Epigenetic age gap is the residual between epigenetic age measures and chronological age. Previous studies showed associations between epigenetic age gap and age-related outcomes including cognitive capacity and performance on some functional measures, but whether epigenetic age gap contributes to disparities in these outcomes is unknown. We use data from the Health and Retirement Study to examine the role of epigenetic age gap in racial disparities in cognitive and functional outcomes and consider the role of socioeconomic status (SES). Epigenetic age measures are GrimAge or Dunedin Pace of Aging methylation (DPoAm). Cognitive outcomes are cross-sectional score and two-year change in Telephone Interview for Cognitive Status (TICS). Functional outcomes are prevalence and incidence of limitations performing Instrumental Activities of Daily Living (IADLs). We find, relative to White participants, Black participants have lower scores and greater decline in TICS, higher prevalence and incidence rates of IADL limitations, and higher epigenetic age gap. Age- and gender-adjusted analyses reveal that higher GrimAge and DPoAm gap are both associated with worse cognitive and functional outcomes and mediate 6-11% of racial disparities in cognitive outcomes and 19-39% of disparities in functional outcomes. Adjusting for SES attenuates most DPoAm associations and most mediation effects. These results support that epigenetic age gap contributes to racial disparities in cognition and functioning and may be an important mechanism linking social factors to disparities in health outcomes.

A descriptive study of physical function and performance in older black men with low back pain

The purpose of this paper is to describe physical function and performance scores and examine the relationships between measures of physical performance in older Black men with low back pain. The Mobility, Aging, Pain, and Disparities study used a cross-sectional, observational design to objectively measure physical performance on the Short Physical Performance Battery (SPPB), the Back Performance Scale (BPS), and the 400-meter Walk Test along with subjective ratings of pain intensity in the past 24 hours. Sixty community-based Black men aged 61-87 (x̄= 70 ± 6) years had an average BPS score of 7.0 ± 4 and total score on the SPPB 8.5 ± 2.1. Average 400-meter Walk time was 6.3 ± 3.1 minutes. Men's average pain intensity in the past 24 hours was 5.7 ± 2, indicating moderate pain. In conclusion, older Black men with low back pain demonstrated low physical function scores and a higher level of disability.

Racial Differences in the Relationship Between Pain and Suicide Desire in Older Adults

Older adults are reported to die by suicide at higher rates than the general population. Suicide desire among older adults is associated with pain, and pain experiences have been found to differ based on race. To investigate the relationship between pain and suicidal desire, 437 racially diverse older adults who receive home-based services (home-delivered meals) in the Southeastern region of the United States completed standardized measures of psychological pain, chronic physical pain, and suicidal desire. Results identified race moderated the relationship between pain and suicidal desire, indicating a stronger relationship between pain and suicidal desire among Black older adults than White older adults. Chronic physical pain (i.e., emotional burden) interacted with race to predict Perceived Burdensomeness ( p = .011) and Thwarted Belongingness ( p = .032). Greater attention to pain experiences among Black older adults is warranted, considering the impact of COVID-19 on racial/ethnic minorities’ mental health.

The epidemiology of preexisting geriatric and palliative conditions in older adults with poor prognosis cancers

BACKGROUND

Older patients with poor prognosis cancers have complex needs that can benefit from geriatrics and palliative care principles. Because they are not routinely assessed, the prevalence of preexisting geriatric and palliative conditions in this population is unknown.

METHODS

We used the nationally representative Health and Retirement Study (HRS) linked with Medicare claims (1998-2016) to identify adults aged ≥65 years diagnosed with poor prognosis cancers (cancers with a median survival ≤1 year). Using the HRS interview before the first Medicare cancer claim, we used survey-weighted descriptive statistics and modified Poisson regression analysis to examine the prevalence of the following clinically significant conditions: functional impairment, difficulty with mobility, falls and injurious falls, social support, cognition, advance care planning, use of pain or sleep medications, and presence of pain or breathlessness.

RESULTS

Of 2105 participants (mean age 76, 53% women, 34% lung cancer, 21% gastrointestinal cancer), the median survival was 9.6 months. Approximately 65% had difficulty climbing stairs (95% CI 63%-67%), 49% had no advance directive (95% CI 45%-54%), 35% lived alone (95% CI 33%-37%), 36% fell in the last 2 years (95% CI 34%-38%), and 32% rated their memory as poor (95% CI 29%-34%). After adjusting for gender, cancer type, and HRS survey time before the first Medicare claim for a poor prognosis cancer, functional impairment and falls were highest among adults aged 85+. Adults aged 65-74 years were less likely to have an advance directive. After adjusting for age, cancer type, and HRS survey time, women had a higher rate of pain and physical impairment. In exploratory analyses, race and socioeconomic status predicted difficulty with mobility and instrumental activities of daily living, living alone, and advance directive completion.

CONCLUSIONS

Due to a high prevalence across multiple domains, all older adults with poor prognosis cancers should be assessed for geriatric and palliative care conditions.

Racial Differences in the Effect of HIV Status on Motor and Pulmonary Function and Mobility Disability in Older Adults

BACKGROUND

Older Black adults face a disproportionate burden of HIV prevalence, but less is known about racial disparities in age-related outcomes in HIV. We assessed the effect of HIV status and race on motor and pulmonary function, as well as how they contribute to mobility disability.

SETTING

Community-based study; Chicago, IL METHODS: Participants were 363 community-dwelling adults age ≥ 50 years, 48% living with HIV, and 68% Black. Participants with HIV were recruited from a specialty HIV clinic, and participants without HIV (comparable on key demographic, lifestyle, and behavioral characteristics) were recruited from the community. Measures included motor function summarized by 10 motor performance measures, pulmonary function summarized by 3 measures assessed using handheld spirometry, and self-reported mobility disability.

RESULTS

In fully adjusted linear models, HIV was associated with better motor (β = 9.35, p < 0.001) and pulmonary function (β = 16.34, p < 0.001). For pulmonary function, the effect of HIV status was moderated by race (interaction between Black race and HIV status: β =  - 11.66, p = 0.02), indicating that better pulmonary function among participants with HIV was less evident among Black participants. In fully adjusted models, odds of mobility disability did not differ by race, HIV status, or pulmonary function; better motor function was associated with lower odds of mobility disability (OR = 0.91 per 1-point higher, 95% CI 0.88-0.93).

CONCLUSION

Better motor and pulmonary function exhibited by participants with HIV could reflect access to medical care. Racial differences in lung function among participants with HIV indicate potential disparities in prevention or treatment of pulmonary disease or underlying risk factors.

Gradient and Acceleration of Decline in Physical and Cognitive Functions in Older Adults: A Disparity Analysis

BACKGROUND

Substantive previous work has shown that both gait speed and global cognition decline as people age. Rates of their decline, as opposed to cross-sectional measurements, could be more informative of future functional status and other clinical outcomes because they more accurately represent deteriorating systems. Additionally, understanding the sex and racial disparity in the speed of deterioration, if any, is also important as ethnic minorities are at an increased risk of mobility disability and dementia.

METHOD

Data from 2 large longitudinal intervention studies were integrated. Rates of decline were derived from individual-level measures of gait speed of 400-m walk and scores on the Modified Mini Mental State Examination (3MSE). We also assessed age-associated declines and accelerations in changes across the ages represented in the studies (age range 53-90).

RESULTS

The mean rate of decline in 400-m gait speed across individuals was 0.03 m/s per year, and multivariable analysis showed a significant acceleration in decline of -0.0013 m/s/y2 (p < .001). Both race and sex moderated the rate of decline. For global cognition, the mean rate of decline was 0.05 of a point per year on the 3MSE scale, and acceleration in the rate of decline was significant (-0.017 point/y2, p < .001), but neither sex nor race moderated the decline.

CONCLUSION

Rate of decline in physical but not cognitive function appears moderated by sex and race. This finding, as well as rates and accelerations of decline estimated herein, could inform future intervention studies.

CLINICAL TRIALS REGISTRATION NUMBER

NCT00017953 (Look AHEAD); NCT01410097 (Look AHEAD ancillary); NCT00116194 (LIFE).

Exploring the association between handgrip, lower limb muscle strength, and physical function in older adults: A narrative review

Widely used in daily practice, handgrip strength (HGS) is a low cost, easy-to-use, and portable test to assess overall muscle and physical function. It can be used as a stand-alone or a first-line tool for evaluating muscle weakness, though controversy surrounds its use for assessing global or lower limb muscle function. Lower limb mobility and physical activity are reduced with advancing age. This decline is difficult to quantify with isokinetic or isometric devices in routine settings (hospital and nursing home). For this narrative review we explored and summarized the findings of studies that investigated the association between HGS, lower limb muscle strength, and physical performance in older adults. The review also provides directions for future research. We noted contrasting findings for an association between HGS, lower limb strength, and physical performance. We found insufficient evidence for endorsing the handgrip dynamometer as a definitive tool for measuring overall muscle strength and physical function. More evidence is needed from comparable studies involving larger samples of men and women and investigating other areas such as lifestyle, daily physical activity levels, and health-related disorders.

The Influence of Race and Gender on Receiving Assistance with Daily Activities among Older Americans

Background and Objectives

Nearly 8.2 million community-dwelling, older Medicare beneficiaries receive support from long-term services and supports (LTSS) with routine daily activities. Prior work demonstrates disability-related disparities; however, it is unclear whether these patterns persist among LTSS recipients and across specific sets of activities. We examine race and gender differences in receiving help with self-care (e.g., eating), mobility (e.g., getting around the house), and household (e.g., shopping) activities in a nationally representative sample of community-dwelling Medicare beneficiaries receiving LTSS.

Research Design and Methods

Cross-sectional analysis of 1,808 White and Black older adults receiving assistance with routine daily activities in the 2015 National Health and Aging Trends Study. Bivariate statistics were used to describe the sample and provide comparisons of characteristics by race and gender. Logistic regression models examined race and gender differences in receiving assistance with self-care, mobility, and household activities after adjusting for sociodemographic and health characteristics.

Results

Race and gender differences were observed across all sociodemographic and health characteristics, as well as for all forms of assistance. Relative to White men, Black men had lower odds of receiving help with self-care activities. White and black women had higher odds and Black men had lower odds of getting help with mobility activities than White men. Black men and White and Black women all had higher odds of receiving assistance with household tasks compared to White men.

Discussion and Implications

Our findings indicate that, despite prior evidence of disability-related disparities, the receipt of help with self-care, mobility, and household activities varies by race and gender. Findings reveal several target areas for future research. Future work should examine the role of cultural and social preferences for care, as well as the appropriateness of help, as evidenced by health service use and changes in quality of life.

Heterogeneity in Association Between Cognitive Function and Gait Speed Among Older Adults: An Integrative Data Analysis Study

BACKGROUND

Increasing evidence shows that cognition and gait speed are associated and are important measures of health among older adults. However, previous studies have used different methods to assess these 2 outcomes and lack sufficient sample size to examine heterogeneity among subgroups. This study examined how the relationship between global cognitive function and gait speed are influenced by age, gender, and race utilizing an integrated data analysis approach.

METHOD

Data on cognition (Montreal Cognitive Assessment [MoCA], Mini-Mental Status Examination [MMSE], and Modified Mini-Mental State Examination [3MSE]) and gait speed (range: 4-400 m) were acquired and harmonized from 25 research studies (n = 2802) of adults aged 50+ from the Wake Forest Older American Independence Center. Multilevel regression models examined the relationship between predicted values of global cognitive function (MoCA) and gait speed (4-m walk), including heterogeneity by age, race, and gender.

RESULTS

Global cognitive function and gait speed exhibited a consistent positive relationship among whites with increasing age, while this was less consistent for African Americans. That is, there was a low correlation between global cognitive function and gait speed among African Americans aged 50-59, a positive correlation in their 60s and 70s, then a negative correlation thereafter.

CONCLUSION

Global cognition and gait speed exhibited a curvilinear U-shaped relationship among whites; however, the association becomes inverse in African Americans. More research is needed to understand this racial divergence and could aid in identifying interventions to maintain cognitive and gait abilities across subgroups.

Perceptions of Physical Activity in African American Older Adults on Hemodialysis: Themes From Key Informant Interviews

OBJECTIVE

To determine key themes underlying the perceptions of older (≥65y) adults on hemodialysis regarding physical activity using qualitative methodology.

DESIGN

Semistructured key informant interviews.

SETTING

Academic medical center.

PARTICIPANTS

Convenience sample of older adults on hemodialysis (N=10).

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Interview transcripts were coded and analyzed using the framework method to extract themes and subthemes. Participants also answered Likert statements regarding their perceptions of physical activity, and the responses were tallied.

RESULTS

Ten older adults on hemodialysis participated (mean age 73±5y; 60% women); all were African American. All participants stated physical activity would make them feel better. The major themes that emerged were barriers and facilitators. Facilitators included internal motivators, family and friend support, and feasibility of incorporating physical activity into routine activities. Barriers were lack of motivation, health issues, and environmental restrictions.

CONCLUSIONS

Physical activity potentially could prevent the physical decline commonly seen in older adults on hemodialysis. Yet information regarding the perceptions of this population toward physical activity is sparse. Although the study is limited by selection bias, our study presents qualitative evidence that black older adults on hemodialysis desire physical activity for their health. Future interventions to increase physical activity in this population should consider leveraging existing facilitators, such as the support of family and friends, and use strategies to address barriers like minimal motivation.

Older Adults' Attitudes About Future Mobility Changes and the Usefulness of Mobility Assessment Materials

OBJECTIVES

To understand older adults' attitudes about future mobility and usefulness of mobility assessment materials.

METHODS

Data came from a telephone survey of 1,000 older adults aged 60-74 years. After answering baseline questions, respondents received mobility assessment materials, then completed follow-up interviews. Respondents were asked about future mobility challenges. During baseline and follow-up, subjects were asked four questions about their mobility as they aged which measured thinking about mobility, thinking about protecting mobility, confidence in protecting mobility, and motivation to protect mobility. Differences in percent of respondents' attitudes between baseline and follow-up and 95% confidence intervals were calculated.

RESULTS

Driving (42%) was the most commonly reported challenge. Significant increases from baseline to follow-up in thinking about mobility (25%), thinking about protecting mobility (39%), and confidence in protecting mobility (29%) were reported.

DISCUSSION

Brief mobility assessment materials can encourage older adults to consider future mobility. Planning for changes can prolong safe mobility.

Barriers and Facilitators to Exercise Participation Among Frail Older African American Assisted Living Residents

Despite the well-known health benefits of physical activity, older adults are more sedentary than any other age group. This issue is particularly true for assisted living (AL) residents, which also represents an important and often overlooked aspect of palliative care. Here, we analyze ethnographic and interview data from a longitudinal study aimed at identifying best practices for palliative care in one African American AL community. The aim was to identify the factors that facilitate and constrain resident participation in instructor-led group exercise. Thematic analysis identified several main themes including the quality and location of the exercise program, AL staffing limitations, residents' health and function, values about exercise, and residents' interest in recreation and social engagement. We identified facilitators and barriers that shaped residents' opportunity, desire, and commitment related to attending group exercise. Findings have implications for interventions aimed at increasing resident participation in group exercise, leading to multiple health benefits.

Exploring Racial and Ethnic Differences in Recovery Maintenance From Mobility Limitation

Objective: This research examines whether racial and ethnic minorities experience less recovery maintenance (i.e., maintaining their recovery status 2 years later). Method: Using Waves 4-12 (1998-2014) of Health and Retirement Study (HRS), this research examines recovery maintenance among a group of older adults who have previously recovered from mobility limitation. Outcomes included newly acquired mobility limitation (reference), recovery maintenance, and death/attrition. Additional analyses examined whether recovery maintenance predicted disability onset. Results: Analyses used multinomial logistic regression to estimate the odds of recovery maintenance 2 years later. After adjusting for socioeconomic status, there were no significant differences in recovery maintenance among older White and minority adults. Recovery maintenance was a robust predictor of subsequent disability onset; there was suggestive evidence that the effect of recovery maintenance on disability onset varied by race. Discussion: This research provides evidence that the higher rates of recovery among minorities is a form of physical resilience.