Mobility and aging: new directions for public health action

Clinical and physiological risk factors contributing to the restricted mobility in older adults: a longitudinal analysis

BACKGROUND

Mobility limitations (e.g., using wheelchair) have been closely linked to diminished functional independence and quality of life in older adults. The regulation of mobility is pertaining to multiple neurophysiologic and sociodemographic factors. We here aimed to characterize the relationships of these factors to the risk of restricted mobility in older adults.

METHODS

In this longitudinal study, 668 older adults with intact mobility at baseline completed the baseline assessments of clinical characteristics, cognitive function, sleep quality, activities of daily living (ADL), walking performance, beat-to-beat blood pressure, and structural MRI of the brain. Then 506 of them (mean age = 70.7 ± 7.5 years) responded to the follow-up interview on the mobility limitation (as defined by if using wheelchair, cane, or walkers, or being disabled and lying on the bed) after 18 ± 3.5 months. Logistic regression analyses were performed to examine the relationships between the baseline characteristics and the follow-up mobility restriction.

RESULTS

At baseline, compared to intact-mobility group (n = 475), restricted-mobility group (n = 31) were older, with lower score of ADL and the Montreal Cognitive Assessment (MoCA), greater score of Pittsburgh Sleep Quality Index (PSQI), poorer cardio- and cerebral vascular function, and slower walking speeds (ps < 0.05). The logistic regression analysis demonstrated that participants who were with history of falls, uncontrolled-hypertension, and/or greater Fazekas scale (odds ratios (ORs):1.3 ~ 13.9, 95% confidence intervals (CIs) = 1.1 ~ 328.2), walked slower, and/or with lower ADL score (ORs: 0.0026 ~ 0.9; 95%CI: 0.0001 ~ 0.99) at baseline, would have significantly greater risk of restricted mobility (p < 0.05; VIFs = 1.2 ~ 1.9).

CONCLUSIONS

These findings provide novel profile of potential risk factors, including vascular characteristics, psycho-cognitive and motor performance, for the development of restricted mobility in near future in older adults, ultimately helping the design of appropriate clinical and rehabilitative programs for mobility in this population.

Effects of simulated multi-sensory stimulation integration on physiological and psychological restoration in virtual urban green space environment

Virtual urban green environment images and audio stimuli had been proven to have restorative effects on subjects' physical and mental health. In this area, researchers predominantly focused on visual, auditory and olfactory aspects, while tactile and gustatory senses have been minimally explored. However, the optimal combination of sensory stimuli for promoting physical and mental recovery remains unclear. Therefore, a simulated sensory stimulation approach involving 240 participants was employed, with 30 individuals included in each of the eight experimental groups: the visual-auditory (VA), visual-auditory-olfactory (VAO), visual-auditory-tactile (VAT), visual-auditory-gustatory(VAG), visual-auditory-olfactory-tactile (VAOT), visual-auditory-olfactory-gustatory (VAOG), visual-auditory-tactile-gustatory (VATG), and visual-auditory-olfactory-tactile-gustatory (VAOTG) groups. This study aimed to explore the differences in participants' physiological and psychological health recovery after exposure to different combinations of simulated sensory stimuli in virtual UGSs. The results indicated that the following: (1) In terms of physiological recovery, the blood pressure of the 8 experimental groups decreased significantly after the experiment, indicating that the virtual urban green space environment has a certain recovery effect on physiological state. The combination of VAOTG stimuli in the multisensory group resulted in the best blood pressure recovery (p < 0.05). Tactile is an important sense to enhance the physiological recovery effect. Olfactory-tactile or tactile-gustatory stimuli interactions significantly enhance physiological recovery, emphasizing the importance of tactile stimulation in improving physiological recovery. (2) In terms of psychological recovery, the common trigger of olfactory-gustatory is the most key element to enhance psychological recovery through multi-sensory stimulation of virtual urban green space environment. VAOG stimulation had the best effect on psychological recovery (p < 0.05), followed by VAOTG stimulation (p < 0.05). Gustatory is an important sense to enhance the psychological recovery effect, and both the tactile-gustatory interaction and the olfactory-gustatory interaction significantly enhance the recovery effect. At the same time, the psychological recovery effect obtained by four or more sensory combinations was higher than that obtained by two or three sensory stimulation groups. This study confirms more possibilities for ways to restore physical and mental health through virtual natural environments. It expands the research on the benefits of virtual nature experience and provides theoretical support for the application of this method.

Validation of the Indian (Hindi) version of the life-space assessment scale among community-dwelling older adults: a multicentric cross-sectional study

BACKGROUND

The Life-Space Assessment (LSA) is an instrument that measures mobility in older adults as they reach different areas, defined as life-spaces extending from home to beyond towns or regions. The purpose of the study was to develop the Hindi version of the LSA (LSA- H) and to investigate the validity and reliability of the Hindi version as well as its cultural adaptation.

METHODS

A cross-sectional study of two hundred forty-five older adults participated in the study from four different study practice areas. Following forward backwards translation, the LSA-H was developed, and the scores were correlated with those of the Activities-Specific Balance Confidence Scale Hindi (ABC- H), the Physical Health Subscale of the WHO-BREF Questionnaire and the Geriatric Depression Scale: Short Form Hindi (GDS-SFH) to test the criterion and concurrent validity.

RESULTS

The mean score and standard deviation of the LSA-H questionnaire were 56.53 ± 35.99, those of the Physical Health Subscale of the WHO-BREF instrument were 18.54 ± 7.87, those of the GDS-SFH questionnaire were 6.95 ± 4.21 and those of the ABC- H questionnaire were 54.40 ± 28.96. The Pearson correlation coefficient (r) between the LSA-H score and ABC-H score was 0.707 (p value < 0.0001), that between the LSA-H score and the Physical Health Subscale of the WHO-BREF was 0.766 (p value < 0.0001), and that between the LSA-H score and GDS-SFG score was - 0.674 (p value < 0.0001).

CONCLUSION

This study demonstrated that the Hindi version of the LSA is a valid and reliable instrument for assessing living space among older adults in the Hindi language in an Indian population. Furthermore, the LSA-H was significantly correlated with other health assessment tools in terms of functional mobility, general health status and mental well-being.

Automated vehicles for older adults with cognitive impairment: a survey study

As the population is ageing, the number of older adults with cognitive impairment (CI) is increasing. Automated vehicles (AVs) can improve independence and enhance the mobility of these individuals. This study aimed to: (1) understand the perception of older adults (with and without CI) and stakeholders providing services and supports regarding care and transportation about AVs, and (2) suggest potential solutions to improve the perception of AVs for older adults with mild or moderate CI. A survey was conducted with 435 older adults with and without CI and 188 stakeholders (e.g. caregivers). The results were analysed using partial least square - structural equation modelling and multiple correspondence analysis. The findings suggested relationships between older adults' level of cognitive impairment, mobility, knowledge of AVs, and perception of AVs. The results provided recommendations to improve older adults' perception of AVs including education and adaptive driving simulation-based training.Practitioner summary: This study investigated the perception of older adults and other stakeholders regarding AVs. The findings suggested relationships between older adults' level of cognitive impairment, mobility, knowledge of AVs, and perception of AVs. The results provided guidelines to improve older adults' perception of AVs.

Special Report from the CDC: Evaluating the dissemination of CDC's MyMobility Plan: Findings and lessons learned

INTRODUCTION

Age-related changes (e.g., cognitive, physiologic) can affect an individual's mobility and increase risks for falls and motor-vehicle crashes, which are leading causes of injuries and injury deaths among older Americans. To address this issue, CDC developed MyMobility Plan (MMP) products to help older adults make plans to reduce injury risks and promote safe mobility. In 2019, MMP products were disseminated to older adults and partner organizations. Dissemination strategies consisted of digital and print distribution and partner outreach.

METHODS

To assess dissemination efforts, a process (or implementation) evaluation was conducted from January to June 2019. Data were collected for 17 indicators (e.g., counts of webpage visits, product downloads, social media posts). Key informant interviews were conducted with partners, and qualitative analyses of interview data were undertaken to identify key themes related to their dissemination experiences.

RESULTS

Findings showed the dissemination resulted in 13,425 product downloads and print copy orders and reached almost 155,000 individuals through email subscriber lists, websites, webinars, and presentations. It is unknown what proportion of these individuals were older adults. Social media metrics were higher than expected, and 58 partners promoted products within their networks. Partner interviews emphasized the need for guidance on dissemination, collaboration with local partners, and integration of the products within a program model to ensure broader reach to and use by older adults.

CONCLUSIONS

The evaluation of the dissemination campaign identified strategies that were successful in creating exposure to the MMP and others that could improve reach in the future. Those strategies include meaningful and early partner engagement for dissemination.

PRACTICAL APPLICATIONS

Building in evaluation from the start can facilitate development of appropriate data collection measures to assess project success. Engaging partners as active disseminators in the planning stages can help increase the reach of public health tools and resources.

Associations between walking limitations and reported activity destinations among older adults

In old age, walking difficulty may reduce opportunities to reach valued activity destinations. Walking modifications, e.g., slower pace or using a walking aid, may enable individuals to continue going where they wish, and hence postpone the consequences of the onset of walking difficulties. We studied visited activity destinations (type, distance) among older people with varying degrees of walking limitations. Community-dwelling 75-85-year-old people living in Jyväskylä (N = 901) were asked to state whether they had no difficulty walking 2 km, had modified their walking, or had difficulty walking. On a digital map, participants located physical exercise, attractive, and regular destinations they had visited during the past month. Destination counts and median distance to destinations from home were computed. Participants with intact walking reported higher counts of physical exercise (IRR = 1.45, 95% CI [1.31, 1.61]) and attractive destinations (IRR = 1.23, 95% CI [1.10, 1.40]) than those with walking difficulty and also visited these destinations further away from home than the others (b = 0.46, 95% CI [0.20, 0.71]). Those with walking modifications reported higher counts of physical exercise destinations than those with walking difficulty (IRR = 1.23, 95% CI [1.09, 1.40]). Counts of regular destinations and distance traveled were not associated with walking limitations. Walking modifications may help people with walking difficulty reach destinations further away from home, potentially contributing to their sense of autonomy. For those with walking difficulty, a low count of destinations other than regular destinations, e.g., shops or healthcare facilities, may signal their abandonment of recreational activities and a decrease in their life space, potentially leading to reduced well-being.

Enhancing public health in developing nations through smartphone-based motor assessment

Several protocols for motor assessment have been validated for use on smartphones and could be employed by public healthcare systems to monitor motor functional losses in populations, particularly those with lower income levels. In addition to being cost-effective and widely distributed across populations of varying income levels, the use of smartphones in motor assessment offers a range of advantages that could be leveraged by governments, especially in developing and poorer countries. Some topics related to potential interventions should be considered by healthcare managers before initiating the implementation of such a digital intervention.

Longitudinal changes in life-space mobility and autonomy in participation outdoors among Finnish community-dwelling older adults from pre-COVID-19 to through the pandemic

BACKGROUND

Among older people, community mobility was reduced at the beginning of the COVID-19 pandemic, but the longer-term changes are unclear.

AIMS

To study lower extremity performance and car driving as predictors of changes in older adults' life-space mobility, autonomy in participation outdoors, and the risk of developing restricted life-space mobility from 2017 to 2022.

METHODS

Life-space mobility (scoring range 0-120) and autonomy in participation outdoors (scoring range 0-20) were assessed in community-dwelling individuals (n = 657) in 2017-2018 (baseline age 75, 80, or 85 years), during the first wave of COVID-19 in 2020, and in 2021-2022. Lower extremity performance was assessed using the Short Physical Performance Battery, and car driving was self-reported at baseline. Data were analysed using generalized estimating equations and Cox regression.

RESULTS

During the first wave of COVID-19 in 2020, life-space mobility decreased on average by 10.3 (SD 21.6) points and partially recovered in 2021-2022 (+ 2.7, SD 21.8). The same pattern was observed for autonomy in participation outdoors. Non-drivers and those with impaired lower extremity performance had a 2.4-to-3.6-fold adjusted risk of developing restricted life-space mobility over the follow-up period compared to drivers with intact lower extremity performance.

CONCLUSIONS

For older people, the recovery of community mobility was incomplete after the restrictions stemming from the pandemic were lifted. Older adults with impaired lower extremity performance and who did not drive were particularly vulnerable to developing restricted life-space mobility, a situation that could lead to social isolation and reduced well-being.

Understanding Wheelchair Use in Older Adults From the National Health and Aging Trends Study

OBJECTIVE

To identify the trends of wheelchair use and physical characteristics among older people who used wheelchairs relative to those who did not.

DESIGN

Cohort and survey.

SETTING

General community.

PARTICIPANTS

7026 participants (N=7026) were selected from the 2011 cohort of the National Health and Aging Trends Study (NHATS), which is made up of Medicare beneficiaries over the age of 65. Repeated observations among participants in the 2011 cohort were analyzed in the 4 following rounds: 2013 (N=4454), 2015 (N=3327), 2017 (N=2623), and 2019 (N=2091). Participants were divided into 2 groups: those who used and did not use wheelchairs.

INTERVENTIONS

Not applicable.

MAIN OUTCOMES MEASURES

Physical characteristics, including pain, strength limitation, balance problems, mobility disability, as well as the frequency of going outside.

RESULTS

The number of older adults who use wheelchairs had increased significantly from 4.7 per 100 people in 2011 to 7.1 in 2019 (P<.001). The logistic regression analysis indicated that participants who reported less frequently going out were at least 4.27 times more likely to be wheelchair users than non-wheelchair users (P<.01). Participants who reported health and physical problems were at least 2.48 times more likely to be wheelchair users than non-wheelchair users from 2011 to 2017 (P<.0001). Balance or coordination problems increased (24%-38%) significantly among non-wheelchair users from 2011 to 2019 (all P<.05).

CONCLUSIONS

Current wheelchair users reported more physical difficulties and were much less likely to go outside. This lower outdoor mobility could be due to physical difficulties or potential barriers in physical and socio-cultural environments. In addition, older adults who do not use wheelchairs showed increasing physical problems over time (including balance or coordination problems). Clinicians should consider older wheelchair users' health and physical limitations when prescribing wheelchairs.

Psychosocial predictors of mobility assistive devices non-adherence among older adults

Background: Mobility assistive devices (MADs) provide support to older adults to improve their quality of life; however, research shows that as many as 75% of older adults are non-adherent to prescribed MADs. This study investigated the psychosocial factors that predict non-adherence to MADs among older adults.Methods: A sample of Canadian older adult MADs users who resided in a long-term care facility was included. The data was collected using the Psychosocial Impact of Assistive Devices Scale (PIADS), and the Medical Outcomes Study Social Support Survey (mMOS-SS). Data analysis was performed using SPSS 28. Descriptive statistics were used to describe the sample and the study variables. Pearson correlation coefficients were used to evaluate the association between the study variables. Variables that were associated with non-adherence in a univariate analysis were subsequently entered into a multiple regression analysis.Results: The sample comprised 48 residents (26 females and 22 males), with a mean age of 86.8. In the univariate analysis, scores from the three PIADS subscales, namely, Competence, Adaptability, and Self-esteem, and the Social Support scale were significantly correlated with non-adherence (p < 0.05). In the multiple regression analyses, only Self-esteem significantly predicted non-adherence (p < 0.05), and this model explained between 43.5 and 54.3% of the variance in non-adherence.Conclusion: This study revealed that the Self-esteem construct, which includes several concepts related to psychological well-being, was the only significant predictor of non-adherence among the studied sample of older adults. The clinical implications of the findings are subsequently discussed.

Prefrontal cortex activation while walking did not change but gait speed improved after a randomized physical therapy intervention

BACKGROUND

Higher prefrontal cortex (PFC) activation while walking may indicate reduced gait automaticity.

AIM

We examine whether PFC activation during walking improves after training in older adults at risk for mobility disability.

METHODS

Forty-two adults aged ≥ 65 participated in a randomized clinical trial (NCT026637780) of a 12-week timing and coordination physical therapy intervention to improve walking (n = 20 intervention, n = 22 active control). PFC activation was measured by functional near-infrared spectroscopy (fNIRS) during four walking tasks over 15 m, each repeated 4 times: even surface walking, uneven surface walking, even dual-task, uneven dual-task; dual-task was reciting every other letter of the alphabet while walking. Gait speed and rate of correct letter generation were recorded. Linear mixed models tested between arm differences in change of fNIRS, gait speed, and letter generation from baseline to follow-up (12-week, 24-week, and 36-week).

RESULTS

Intervention arms were similar in mean age (74.3 vs. 77.0) and baseline gait speed (0.96 vs. 0.93 m/s). Of 24 comparisons of between arm differences in the fNIRS signals, only two were significant which were not supported by differences at other follow-up times or on other tasks. Gait speed, particularly during dual-task conditions, and correct letter generation did improve post-intervention but improvements did not differ by arm.

DISCUSSION AND CONCLUSIONS

After training, PFC activation during walking generally did not improve and did not differ by intervention arm. Improvements in gait speed without increased PFC activation may point toward more efficient neural control of walking.

Driving Cessation and Late-Life Depressive and Anxiety Symptoms: Findings from the National Health and Aging Trends Study

OBJECTIVES

To describe the association between driving cessation and depressive and anxiety symptoms over time by assessing depression and anxiety at 1- and 4-years follow-up.

METHODS

The study examined community-dwelling adults aged 65 years and older from the National Health and Aging Trends Study who were driving at the 2015 interview and completed 1-year (N = 4,182) and 4-year (N = 3,102) follow-up interviews. Outcomes were positive screens for depressive and anxiety symptoms in 2016 or 2019, and the primary independent variable was driving cessation within one year of the baseline interview.

RESULTS

Adjusting for socio-demographic and clinical characteristics, driving cessation was associated with depressive symptoms at 1 year (OR = 2.25, 95% CI: 1.33-3.82) and 4-year follow-up (OR = 3.55, 95% CI: 1.72-7.29). Driving cessation was also associated with anxiety symptoms at 1 year (OR = 1.71, 95% CI: 1.05-2.79) and 4 year follow up (OR = 3.22, 95% CI: 1.04-9.99).

CONCLUSIONS

Driving cessation was associated with an increased risk of developing depressive and anxiety symptoms in later life. However, reasons for this association remain unclear.

CLINICAL IMPLICATIONS

Although the mechanism linking driving cessation with worse mental health symptoms is uncertain, driving facilitates many important activities. Clinicians should monitor the well-being of patients who stop or intend to stop driving.

The Effects of ICT-Based Interventions on Physical Mobility of Older Adults: A Systematic Literature Review and Meta-Analysis

Systematic literature review and meta-analysis were conducted to integrate and analyze intervention studies dealing with the effects of information and communications technology- (ICT-) based interventions on the physical mobility of older adults in the community. The PubMed/MEDLINE, Embase, CINAHL, and Cochrane CENTRAL databases were searched for studies published from January 2000 to December 2022. We used the Risk of Bias 2 (RoB 2) tool to evaluate the quality of the randomized controlled studies in the systematic review. The meta-analysis was performed using a random-effects model. The model was used to calculate the standardized mean difference (SMD) and 95% confidence interval (CI) for both effect measures. I2 tests were used to measure the presence of heterogeneity. Thirty-seven randomized controlled trials were included (2,419 intervention participants), of which 23 were included in the meta-analysis. ICT interventions significantly improved Timed Up and Go (TUG) as a marker of physical mobility variable in older adults (SMD = -0.33, 95% CI: -0.57 to -0.10, p=0.005, I2 = 74.7%). A sensitivity analysis was performed on subgroups, and interventions were found to be effective in improving TUG in the exergame group (SMD = -0.40, 95% CI: -0.72 to -0.08, p < 0.001, I2 = 75.0%) and in the exergame with virtual reality (VR) group (SMD = -0.33, 95% CI: -1.01 to 0.35, p < 0.001, I2 = 91.0%) but both groups showed high heterogeneity. A meta-analysis was also performed on Short Physical Performance Battery (SPPB) but statistically significant results were not found (SMD = -0.19, 95% CI: -0.61 to 0.23, p=0.375, I2 = 87.7%). For the Berg Balance Scale (BBS), the post-intervention scores were significantly better than baseline (SMD = 1.52, 95% CI: 0.48 to 2.57, p=0.004, I2 = 93.5%). However, the number of studies included in the meta-analysis was small and heterogeneity was high, so follow-up studies are needed. This study confirmed that exergames, telecommunication, e-health, information applications, and robots were used as effective ICT-based interventions for improving the physical mobility of older adults. It is necessary to develop and apply more diverse ICT-based interventions that will prevent impairments of mobility and encourage older adults to live more independently, with a higher quality of life, based on extensive research on ICT-based interventions.

Development and Validation of a Perceived Community Food Accessibility Measurement Questionnaire for Korean Older Adults

As the community food environment is known to be an important factor in healthy food choices, it needs to be measured, to increase awareness and improve healthy eating. The objective of this study was to develop a perceived community food accessibility measurement (P-CFAM) questionnaire applicable to older adults in Korea and evaluate its reliability and validity. The questionnaire was developed based on community food environment factors that were found to affect food choices in previous studies. We evaluated the internal consistency reliability, construct validity, and criterion-related validity. The subjects were 188 older adults for validity. The Cronbach's alpha value for the reliability measure was 0.9. The confirmatory factor analysis to evaluate the construct validity of the questionnaire showed values close to those of the optimal model (GFI = 0.983, AGFI = 0.948, RMR = 0.004, NFI = 0.987, CFI = 0.996). Regarding the criterion-related validity, the P-CFAM questionnaire results were significantly related to objective measurement indicators such as the number of grocery stores, the travel time to a grocery store, and the intake of vegetables and fruit. In conclusion, the developed P-CFAM questionnaire was shown to be reliable and valid, and useful for assessing older adults' perceptions of community food accessibility in Korea.

Factors influencing mobility in community-dwelling older adults during the early COVID-19 pandemic: a cross-sectional study

BACKGROUND

In older adults, mobility is important for maintaining their independence and quality of life, and it influences their physical, cognitive, and social health. This study aimed to identify the physical and psychosocial factors that affected the mobility of community-dwelling older adults, aged 65 years or older, who were socially isolated during the coronavirus disease 2019 (COVID-19) pandemic due to stay-at-home policies.

METHODS

The participants in this study were 214 community-dwelling older adults in Korea, and a cross-sectional survey was conducted from December 2020 to January 2021. Variables included participants' general characteristics, mobility, sitting time, depression, social support, and cognitive function.

RESULTS

Multiple linear regression analysis showed that the factors influencing older adults' mobility during the COVID-19 pandemic were depression (β=-0.29, p < .001), age (65-74 years old) (β = 0.19, p = .002), a lower level of education (β=-0.17, p = .006), two or more comorbidities (β=-0.18, p = .001), sitting time (β=-0.17, p = .004), and the ability to drive a vehicle (β = 0.14, p = .017).

CONCLUSIONS

Home healthcare interventions are needed to limit psychosocial issues and improve mobility for older adults who had limited mobility during the COVID-19 pandemic.

Exploring Goals and Functional Changes in Reablement for People with Fractures and People with Dizziness and Balance Problems

Background

Although older people often have challenges with fractures and dizziness/balance problems, knowledge concerning the impact of reablement of people with these conditions is limited.

Aim

To explore functional changes in reablement for older home-dwelling people with fractures and dizziness/balance problems regarding 1) occupational performance and satisfaction with performance, 2) physical function and 3) health-related quality of life, and 4) which occupations they prioritize as rehabilitation goals.

Material and Methods

The sample is derived from a nationwide clinically controlled trial in Norway consisting of 149 participants with fractures and 113 with dizziness/balance problems who participated in a four to 10-week reablement program. Data were collected at baseline and at 10-week, 6-month, and 12-month follow-up and were analyzed with paired t-tests and analysis of covariance. Occupational priorities were categorized into sub-areas of occupation.

Results

Both groups had significant short-, mid-, and long-term improvements in occupational performance and satisfaction with performance. Except for balance from baseline to 12-month follow-up, the fracture group showed significant improvements in physical function and health-related quality of life at all follow-ups. The results varied more in the group with dizziness/balance problems in physical function and health-related quality of life. Functional mobility was the highest prioritized occupational sub-area in both groups.

Conclusion

The findings of this study provide extended knowledge about goals and functional changes in people with fractures and dizziness/balance problems following a reablement program.

Significance

Tailoring and individual adjustments according to diagnosis may be important in person-centered care in reablement.

Development and reliability testing of an audit toolbox for the assessment of the physical activity friendliness of urban and rural environments in Germany

Background

According to socio-ecological theories, physical activity behaviors are linked to the physical and social neighborhood environment. Reliable and contextually adapted instruments are needed to assess environmental characteristics related to physical activity. This work aims to develop an audit toolbox adapted to the German context, to urban and rural settings, for different population groups, and different types of physical activity; and to evaluate its inter-rater reliability.

Methods

We conducted a systematic literature search to collect existing audit tools and to identify the latest evidence of environmental factors influencing physical activity in general, as well as in German populations. The results guided the construction of a category system for the toolbox. Items were assigned to the categories based on their relevance to physical activity and to the German context as well as their comprehensibility. We piloted the toolbox in different urban and rural areas (100 street segments, 15 parks, and 21 playgrounds) and calculated inter-rater reliability by Cohen's Kappa.

Results

The audit toolbox comprises a basic streetscape audit with seven categories (land use and destinations, traffic safety, pedestrian infrastructure, cycling infrastructure, attractiveness, social environment, and subjective assessment), as well as supplementary tools for children and adolescents, seniors and people with impaired mobility, parks and public open spaces, playgrounds, and rural areas. 76 % of all included items had moderate, substantial, or almost perfect inter-rater reliability (κ > 0.4).

Conclusions

The audit toolbox is an innovative and reliable instrument for the assessment of the physical activity friendliness of urban and rural environments in Germany.

Simulating the effect of ankle plantarflexion and inversion-eversion exoskeleton torques on center of mass kinematics during walking

Walking balance is central to independent mobility, and falls due to loss of balance are a leading cause of death for people 65 years of age and older. Bipedal gait is typically unstable, but healthy humans use corrective torques to counteract perturbations and stabilize gait. Exoskeleton assistance could benefit people with neuromuscular deficits by providing stabilizing torques at lower-limb joints to replace lost muscle strength and sensorimotor control. However, it is unclear how applied exoskeleton torques translate to changes in walking kinematics. This study used musculoskeletal simulation to investigate how exoskeleton torques applied to the ankle and subtalar joints alter center of mass kinematics during walking. We first created muscle-driven walking simulations using OpenSim Moco by tracking experimental kinematics and ground reaction forces recorded from five healthy adults. We then used forward integration to simulate the effect of exoskeleton torques applied to the ankle and subtalar joints while keeping muscle excitations fixed based on our previous tracking simulation results. Exoskeleton torque lasted for 15% of the gait cycle and was applied between foot-flat and toe-off during the stance phase, and changes in center of mass kinematics were recorded when the torque application ended. We found that changes in center of mass kinematics were dependent on both the type and timing of exoskeleton torques. Plantarflexion torques produced upward and backward changes in velocity of the center of mass in mid-stance and upward and smaller forward velocity changes near toe-off. Eversion and inversion torques primarily produced lateral and medial changes in velocity in mid-stance, respectively. Intrinsic muscle properties reduced kinematic changes from exoskeleton torques. Our results provide mappings between ankle plantarflexion and inversion-eversion torques and changes in center of mass kinematics which can inform designers building exoskeletons aimed at stabilizing balance during walking. Our simulations and software are freely available and allow researchers to explore the effects of applied torques on balance and gait.

Association of Vascular Health Measures and Physical Function: A Prospective Analysis in the Framingham Heart Study

BACKGROUND

Dysfunction in blood vessel dynamics may contribute to changes in muscle measures. Therefore, we examined associations of vascular health measures with grip strength and gait speed in adults from the Framingham Heart Study.

METHODS

The cross-sectional study (1998-2001) included participants with 1 measure of grip strength (kg, dynamometer) or gait speed (4-m walk, m/s) and at least 1 measure of aortic stiffness (carotid-femoral pulse wave velocity, brachial pulse pressure, and brachial flow pulsatility index) or brachial artery structure and function (resting flow velocity, resting brachial artery diameter, flow-mediated dilation %, hyperemic brachial blood flow velocity, and mean arterial pressure [MAP]) assessed by tonometry and brachial artery ultrasound. The longitudinal study included participants with ≥1 follow-up measurement of gait speed or grip strength. Multivariable linear regression estimated the association of 1 standard deviation (SD) higher level of each vascular measure with annualized percent change in grip strength and gait speed, adjusting for covariates.

RESULTS

In cross-sectional analyses (n = 2 498, age 61 ± 10 years; 56% women), higher resting brachial artery diameter (β ± standard error [SE] per 1 SD: 0.59 ± 0.24, p = .01) and MAP (β ± SE: 0.39 ± 0.17, p = .02) were associated with higher grip strength. Higher brachial pulse pressure (β ± SE: -0.02 ± 0.01, p = .07) was marginally associated with slower gait speed. In longitudinal analyses (n = 2 157), higher brachial pulse pressure (β ± SE: -0.19 ± 0.07, p = .005), was associated with slowing of gait speed but not with grip strength.

CONCLUSIONS

Higher brachial artery pulse pressure (measure of aortic stiffness) was associated with loss of physical function over ~11 years, although we found no evidence that microvascular function contributed to the relation.

Promoting active aging through assistive product design innovation: a preference-based integrated design framework

Background

With the accelerating trend of global aging, over one billion people need to use one or more types of assistive products. However, the high abandonment rate of current assistive products is affecting the quality of life of the older adults, posing challenges to public health. Accurately capturing the preference factors of the older adults in the design process is an important way to improve the acceptance of assistive products. In addition, a systematic approach is needed to translate these preference factors into innovative product solutions. These two issues are less addressed in existing research.

Methods

First, the evaluation grid method was used to conduct in-depth interviews with users and extract the structure of preference factors for assistive products. Quantification theory type I was used to calculate the weight of each factor. Secondly, universal design principles, TRIZ theory's contradiction analysis techniques, and invention principles were used to translate the preference factors into design guidelines. Then, finite structure method (FSM), morphological chart, and CAD techniques were used to visualize the design guidelines as alternatives. Finally, Analytic Hierarchy Process (AHP) was used to evaluate and rank the alternatives.

Results

A Preference-based Assistive Product Design Model (PAPDM) was proposed. The model includes three stages: definition, ideation, and evaluation. A case study on walking aid demonstrated the execution of PAPDM. The results show that 28 preference factors influence the four psychological needs of the older adults: sense of security, sense of independence, self-esteem, and sense of participation. These psychological needs were reflected in the shape, color, material, universality, user-friendly, reliability, and smart functions of assistive products. The preference factors were transformed into five design guidelines, and three alternatives were generated. Finally, the evaluation concludes that solution C was the optimal solution.

Conclusion

The PAPDM framework provides designers with a transparent, progressive approach to designing assistive products that meet unique needs and preferences of older adults. This enhances objectivity and scientific rigor in assistive product development, avoiding blind design and production. By considering the perspective of older adults from the outset, we can avoid high abandonment rates of assistive products and contribute to promoting active aging.

Feasibility of a Smartwatch Platform to Assess Ecological Mobility: Real-Time Online Assessment and Mobility Monitor

BACKGROUND

Early detection of mobility decline is critical to prevent subsequent reductions in quality of life, disability, and mortality. However, traditional approaches to mobility assessment are limited in their ability to capture daily fluctuations that align with sporadic health events. We aim to describe findings from a pilot study of our Real-time Online Assessment and Mobility Monitor (ROAMM) smartwatch application, which uniquely captures multiple streams of data in real time in ecological settings.

METHODS

Data come from a sample of 31 participants (Mage = 74.7, 51.6% female) who used ROAMM for approximately 2 weeks. We describe the usability and feasibility of ROAMM, summarize prompt data using descriptive metrics, and compare prompt data with traditional survey-based questionnaires or other established measures.

RESULTS

Participants were satisfied with ROAMM's function (87.1%) and ranked the usability as "above average." Most were highly engaged (average adjusted compliance = 70.7%) and the majority reported being "likely" to enroll in a 2-year study (77.4%). Some smartwatch features were correlated with their respective traditional measurements (eg, certain GPS-derived life-space mobility features (r = 0.50-0.51, p < .05) and ecologically measured pain (r = 0.72, p = .01), but others were not (eg, ecologically measured fatigue).

CONCLUSIONS

ROAMM was usable, acceptable, and effective at measuring mobility and risk factors for mobility decline in our pilot sample. Additional work with a larger and more diverse sample is necessary to confirm associations between smartwatch-measured features and traditional measures. By monitoring multiple data streams simultaneously in ecological settings, this technology could uniquely contribute to the evolution of mobility measurement and risk factors for mobility loss.

What Do Older Canadians Think They Need to Walk Well?

Purpose

To identify older Canadians' perception of the importance of expert-generated elements of walking quality, and the contributors to and consequences of perceived walking quality.

Method

Cross-sectional survey of 649 adults was conducted through a commercial participant panel, Hosted in Canada Surveys.

Results

Of the 649 respondents, 75% were between 65 and 74 years old (25% ≥ 75) and 49% were women. The most important elements were foot, ankle, hip, and knee mobility with little difference in ranks across walking perception (Fr χ12 = 5.0, p > 0.05). People who were older by a decade were more likely to report poorer walking (POR: 1.4; 95% CI: 1.0, 1.7), as were women compared to men, and people who used a walking aid compared to none. Lung disease showed the highest association with a perception of not walking well (POR: 7.2; 95% CI: 3.7, 14.2). The odds of being willing to pay more for a technology to improve walking were always greater for those with a lower perception of their walking quality.

Conclusions

People who perceived their walking quality as poor were more likely to report poorer health and were willing to pay more for a technology to improve walking. This supports the opportunity of leveraging wearable technologies to improve walking.

mCrutch: A Novel m-Health Approach Supporting Continuity of Care

This paper reports the architecture of a low-cost smart crutches system for mobile health applications. The prototype is based on a set of sensorized crutches connected to a custom Android application. Crutches were instrumented with a 6-axis inertial measurement unit, a uniaxial load cell, WiFi connectivity, and a microcontroller for data collection and processing. Crutch orientation and applied force were calibrated with a motion capture system and a force platform. Data are processed and visualized in real-time on the Android smartphone and are stored on the local memory for further offline analysis. The prototype's architecture is reported along with the post-calibration accuracy for estimating crutch orientation (5° RMSE in dynamic conditions) and applied force (10 N RMSE). The system is a mobile-health platform enabling the design and development of real-time biofeedback applications and continuity of care scenarios, such as telemonitoring and telerehabilitation.

Towards a core-set of mobility measures in ageing research: The need to define mobility and its constructs

BACKGROUND

Mobility is a key determinant and outcome of healthy ageing but its definition, conceptual framework and underlying constructs within the physical domain may need clarification for data comparison and sharing in ageing research. This study aimed to (1) review definitions and conceptual frameworks of mobility, (2) explore agreement on the definition of mobility, conceptual frameworks, constructs and measures of mobility, and (3) define, classify and identify constructs.

METHODS

A three-step approach was adopted: a literature review and two rounds of expert questionnaires (n = 64, n = 31, respectively). Agreement on statements was assessed using a five-point Likert scale; the answer options 'strongly agree' or 'agree' were combined. The percentage of respondents was subsequently used to classify agreements for each statement as: strong (≥ 80%), moderate (≥ 70% and < 80%) and low (< 70%).

RESULTS

A variety of definitions of mobility, conceptual frameworks and constructs were found in the literature and among respondents. Strong agreement was found on defining mobility as the ability to move, including the use of assistive devices. Multiple constructs and measures were identified, but low agreements and variability were found on definitions, classifications and identification of constructs. Strong agreements were found on defining physical capacity (what a person is maximally capable of, 'can do') and performance (what a person actually does in their daily life, 'do') as key constructs of mobility.

CONCLUSION

Agreements on definitions of mobility, physical capacity and performance were found, but constructs of mobility need to be further identified, defined and classified appropriately. Clear terminology and definitions are essential to facilitate communication and interpretation in operationalising the physical domain of mobility as a prerequisite for standardisation of mobility measures.

The Role of Community Health Workers in the Health and Well-Being of Vulnerable Older Adults during the COVID Pandemic

The COVID-19 pandemic disrupted social support networks as well as resource access for participants. The purpose of this study was to: analyze the experiences of older adults enrolled in a geriatric-focused community health worker (CHW) support program, to gain a better understanding of how CHWs might enhance care delivery, and to further understand how COVID-19 affected the social and emotional needs and well-being of older adults during the first 18 months of the pandemic. Qualitative analysis was performed on notes entered by CHWs based on 793 telephone encounters with 358 participants between March 2020 and August 2021. Analysis was performed by two reviewers independently coding the data. Weighing the benefits of seeing family against the risks of COVID exposure was a source of emotional distress for participants. Our qualitative analysis suggests that CHWs were effective in providing emotional support and connecting participants to resources. CHWs are capable of bolstering the support networks of older adults and carrying out some of the responsibilities conventionally fulfilled by family supports. CHWs addressed participant needs that are frequently unmet by healthcare team members and provided emotional support to participants contributing to health and well-being. CHW assistance can fill gaps in support left by the healthcare system and family support structures.

Does Personality Moderate the Efficacy of Physical and Cognitive Training Interventions? A 12-month Randomized Controlled Trial in Older Adults

This study investigated whether personality traits moderate the effects of a 12-month physical or combined physical and cognitive training interventions on physical and cognitive functioning. Participants were community-dwelling 70-85-year-old adults (n=314). They were randomly assigned to physical training (weekly supervised walking/balance and strength/balance training, home exercises 2-3x/wk and moderate aerobic activity) or to a physical and cognitive training group (the same physical training and computer training on executive functions 3-4x/wk). The outcomes assessed at baseline and post-intervention were physical (maximum gait speed, six-minute walking distance, dual-task cost on gait speed) and cognitive functioning (Stroop, Trail-Making Test-B, verbal fluency, CERAD total score). Personality traits (NEO-PI-3, n=239) were assessed post-intervention. Personality traits did not moderate intervention effects on physical functioning. Higher openness was associated with greater improvement in CERAD scores, especially in the physical and cognitive training group (group×time×trait B=-.08, p=.038). Lower neuroticism (time×trait B=-.04, p=.021) and higher conscientiousness (time×trait B=.04, p=.027) were associated with greater improvement in CERAD scores in both groups. Personality traits had mostly null moderating effects across physical and cognitive outcomes, with the possible exception of CERAD score. Individuals with more adaptive personality traits gained more on global cognitive scores during a 12-month training intervention.

Effects of immersion in a simulated natural environment on stress reduction and emotional arousal: A systematic review and meta-analysis

Background

Although the mental health benefits of exposure to simulated natural environments are well established by researchers from environmental psychology, landscape architecture, and public health, it is unclear whether and to what extent technological immersion affects these benefits.

Methods

Systematical literature searches were conducted in May 2022 from six databases. The risk of bias was evaluated using the Cochrane's Risk of Bias tool 2.0 and the Risk of Bias in Non-randomized Studies of Interventions tool. We performed a random-effects meta-regression to investigate the heterogeneity. The immersion levels of included studies were classified by projection devices and motion capture, and then subgroup analysis was conducted.

Results

Twenty-six publications were included. Exposure to simulated nature was confirmed to be associated with increased positive affect 0.40 [95% confidence interval (CI): 0.22, 0.58], vigor 0.58 (95% CI: 0.30, 0.86), calmness 0.54 (95% CI: 0.17, 0.92) and decreased perceived stress -0.38 (95% CI: -0.71, -0.06), total mood disturbance -0.87 (95% CI: -1.17, -0.57), tension -0.70 (95% CI: -0.99, -0.41), fatigue -0.60 (95% CI: -0.91, -0.28), anxiety -0.72 (95% CI: -1.43, -0.02), depression -0.33 (95% CI: -0.52, -0.14), confusion -0.79 (95% CI: -1.19, -0.40), and anger -0.54 (95% CI: -0.76, -0.31). Gender, health status, study design, mean age, and single exposure duration were not significant when entered in a meta-regression. For positive affect, medium immersion was observed to produce a larger effect than low and high immersion. All included studies had a moderate to high risk of bias.

Conclusion

Audio-visual exposure to simulated nature contributes to stress relief and emotional arousal. The immersion level explains the heterogeneity of positive affect triggered by simulated nature. Focusing on the technical features will open up new possibilities for combining actual and simulated nature's mental health benefits.

Factors Influencing Mobility During the COVID-19 Pandemic in Community-Dwelling Older Adults

OBJECTIVE

To describe and identify factors influencing mobility among older adults during the first 5 months of the COVID-19 pandemic.

DESIGN

A cross-sectional telesurvey.

SETTING

Community dwelling older adults, situated within the first 5 months of the COVID-19 pandemic, in Hamilton, Canada.

PARTICIPANTS

A random sample of 2343 older adults were approached to be in the study, of which 247 completed the survey (N=247). Eligible participants were aged ≥65 years.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Mobility was measured using global rating of change items and the Late Life Function Instrument (LLFI). Multivariate linear regression models were used to examine the association between mobility and related factors based on Webber's model.

RESULTS

247 older adults (29% male, mean age 78±7.3 years) completed surveys between May and August 2020. Respectively, 26%, 10%, and 9%, rated their ability to engage in physical activity, housework, and move around their home as worse compared with the start of the pandemic. The mean LLFI score was 60.9±13.4. In the model, walking volume (β=0.03 95% confidence interval 0.013, 0.047), fall history (β=-0.04, 95% confidence interval -0.08, -0.04), male sex (β=0.06, 95% confidence interval 0.02, 0.09), unpleasant neighborhood (β=-0.06, 95% confidence interval -0.11, -0.02), musculoskeletal pain (β=-0.07, 95% confidence interval -0.11, -0.03), and self-reported health (β=0.08, 95% confidence interval 0.03, 0.13) had the strongest associations with LLFI scores and explained 64% of the variance in the LLFI score.

CONCLUSIONS

Physical and environmental factors may help explain poorer mobility during lockdowns. Future research should examine these associations longitudinally to see if factors remain consistent over time and could be targeted for rehabilitation.

Changes in Older Adults' Frequency of Going Outside between 2020 and 2021: Associations with Health Status and Environmental Factors

OBJECTIVES

To examine the changes in the frequency of going outside among U.S. older adults between 2020 and 2021 (post-COVID vaccine) and correlates of those changes.

METHODS

We used the 2019-2021 National Health and Aging Trend Study (NHATS) (N = 3,063, age 70+) and multinomial logistic regression to analyze associations of increased and decreased frequencies in going outside with physical, psychosocial, and cognitive health, environmental (COVID concerns and transportation) factors, and social media use as the independent variables.

RESULTS

In 2021 compared to 2020, 13% and 16% of those age 70+ reported increased and decreased frequencies, respectively. Increased frequency was associated with social media use. Decreased frequency was associated with poor physical health, depression/anxiety, and perceived memory decline. COVID concerns and transportation problems, as well as female gender, age 90+, and being non-Hispanic Black, were also significant correlates of decreased frequency.

CONCLUSIONS

Most U.S. adults age 70+ appear to have resumed their 2019 level of frequency of going outside in 2021 after the COVID vaccines became available; however, 16% reported decreased frequency of going outside in 2021 compared to 2020.

CLINICAL IMPLICATIONS

Older adults with physical, mental, and cognitive health challenges need help to increase their frequency of going outside.

Association of falls and fear of falling with objectively-measured driving habits among older drivers: LongROAD study

OBJECTIVE

Falls in older adults are associated with increased motor vehicle crash risk, possibly mediated by driving behavior. We examined the relationship of falls and fear of falling (FOF) with subsequent objectively measured driving habits.

METHODS

This multi-site, prospective cohort study enrolled 2990 active drivers aged 65-79 (53% female). At enrollment, we assessed falls in the past year and FOF (Short Falls Efficacy Scale-International). Driving outcomes included exposure, avoidance of difficult conditions, and unsafe driving during one-year follow-up, using in-vehicle Global Positioning System devices.

RESULTS

Past-year falls were associated with more hard braking events (HBE). High FOF was associated with driving fewer days, miles, and trips, driving nearer home and more HBE. Differences were attenuated and not significant after accounting for health, function, medications and sociodemographics.

DISCUSSION

Differences in objectively measured driving habits according to past-year fall history and FOF were largely accounted for by differences in health and medications. Rather than directly affecting driving, falls and FOF may serve as markers for crash risk and reduced community mobility due to age-related changes and poor health.

Contextual factors influencing the urban mobility infrastructure interventions and policies for older adults in low- and middle-income countries: a realist review

Transportation is among the key aspects that influence active ageing. This realist review intends to understand the mechanisms of urban mobility infrastructure interventions and policies in low- and middle-income countries for older adults and to identify factors, which influenced the success or failure of interventions. We followed the steps suggested by Pawson and colleagues for a realist review. Electronic databases were searched from inception until August 2020. Studies were screened based on titles, abstracts and full text. The quality of included studies was assessed based on rigour and relevance. The evidence was obtained from 36 articles with diverse study designs conducted in 36 low- and middle-income countries. Findings were validated through stakeholder consultations from three low- and middle-income countries. Of the various individual factors identified, behaviour change communication interventions were low-cost, had a long-term impact and were efficient in increasing awareness among users to improve safety, social inclusion and about transport schemes for older adults. Improved transport infrastructure resulted in a shift from private to public transportation. For a sustainable urban transport infrastructure, good governance and involvement of stakeholders for planning and implementing transport interventions were considered necessary. Lack of evaluation, experience of transport planners, and inter-sectoral coordination were key challenges to successful interventions. The review highlighted a lack of older adult-specific transportation policies, and gender-targeted interventions for older women, suggesting a need for interventions and policies based on the contextual factors existing in a region.

The potential of assessment based on the WHO framework of intrinsic capacity in fragility fracture prevention

The risk of falls associated with population ageing and the burden of chronic diseases increase the risk of fragility fractures. Globally, a large increase in the numbers of people sustaining fragility fractures is predicted. The management of highly vulnerable older persons who present and/or are at risk of fragility fractures is challenging given their clinical complexity and the fragmentation of the healthcare services. Fragility fractures frequently result in reduced functional ability and quality of life. Therefore, it is essential to implement person-centered models of care to address the individual's priorities and needs. In this context, the multidimensional construct of intrinsic capacity, composed of the critical functions on which the individual's functional ability rely, becomes of particular interest.In this article, the potential of current models to meet the global challenge is considered, particularly where healthcare systems are less integrated and poorly structured. It then describes how assessment of intrinsic capacity might provide the clinician with a holistic picture of an older individual's reserves before and after a fragility fracture and the implications of implementing this approach based on the construct of intrinsic capacity in healthcare systems, in both well-developed and low-resourced settings. It suggests that optimization of intrinsic capacity and functional ability is a credible conceptual model and might support a generally feasible approach to primary and secondary fracture prevention in older people.

"Well in in this neighborhood I have walked, not at all": Stroke survivors lived experience in the outdoor environment

Stroke survivors face unique challenges in the outdoor environment when returning to their home community following a stroke. Challenges include navigating uneven terrain, social stigma, and adapting to changes in functioning. Outdoor environments may serve as potential points of intervention to promote independence and participation post stroke. This study aimed to understand lived post-stroke experience in the outdoor environment as it pertains to independent mobility.

METHODS

Qualitative semi-structured interviews were conducted with 20 stroke survivors (8 males, 12 females; mean age 64.2 years: range 45 years-90 years). Participants were eligible if they were over the age of 45, could communicate in English, lived outside a nursing home, able to walk safely outdoors, were a minimum of six-months post stroke, and had no severe cognitive impairment. Interviews with participants were tape recorded, audio files were transcribed verbatim, codes were created and applied to transcripts, and themes were generated using interpretative phenomenological analysis.

RESULTS

Post-stroke experiences in the outdoor environment were multidimensional. Three themes emerged from the stroke survivors' description of personal experiences in the outdoor environment. These themes included feelings of vigilance, employing adaptation strategies, and management of dynamic relations between the self and context.

DISCUSSION

The findings highlight the post-stroke experience traversing the outdoor environment. Investing in the public outdoor environment to remove barriers and install facilitators could reduce feelings of apprehension and hypervigilance while walking in the outdoor environment. Future research is needed to evaluate the role of environmental interventions on hypervigilance in the outdoor environment post stroke.

Potential role of passively increased muscle temperature on contractile function

Declines in muscle force, power, and contractile function can be observed in older adults, clinical populations, inactive individuals, and injured athletes. Passive heating exposure (e.g., hot baths, sauna, or heated garments) has been used for health purposes, including skeletal muscle treatment. An acute increase in muscle temperature by passive heating can increase the voluntary rate of force development and electrically evoked contraction properties (i.e., time to peak twitch torque, half-relation time, and electromechanical delay). The improvements in the rate of force development and evoked contraction assessments with increased muscle temperature after passive heating reveal peripheral mechanisms’ potential role in enhancing muscle contraction. This review aimed to summarise, discuss, and highlight the potential role of an acute passive heating stimulus on skeletal muscle cells to improve contractile function. These mechanisms include increased calcium kinetics (release/reuptake), calcium sensitivity, and increased intramuscular fluid.

Resilience and Mental Health Among Regularly and Intermittently Active Older Adults: Results From a Four-Year Longitudinal Study

BACKGROUND

This study aims to investigate whether regularly active individuals have different levels of mental health and resilience compared to intermittently active individuals.

METHODS

In this 4-year longitudinal study, 180 older people were included. General linear models were used to assess the level of physical activity, psychological resilience, and mental health among regularly and intermittently active older adults.

RESULTS

Those who maintained regular physical activity were more resilient than those who did not. However, no differences were observed for mental health outcomes. Although those with higher levels of resilience had fewer mental health problems, there were no significant differences between the groups based on their level of physical activity.

CONCLUSION

Differences in resilience levels favoring regularly active individuals were found. In both groups, resilience was inversely associated with mental health problems. These findings may help elucidate the underlying mechanisms in the relationship between physical activity and health outcomes.

Using multiple imputation and intervention-based scenarios to project the mobility of older adults

Background

Projections of the development of mobility limitations of older adults are needed for evidence-based policy making. The aim of this study was to generate projections of mobility limitations among older people in the United States, England, and Finland.

Methods

We applied multiple imputation modelling with bootstrapping to generate projections of stair climbing and walking limitations until 2026. A physical activity intervention producing a beneficial effect on self-reported activities of daily living measures was identified in a comprehensive literature search and incorporated in the scenarios used in the projections. We utilised the harmonised longitudinal survey data from the Ageing Trajectories of Health – Longitudinal Opportunities and Synergies (ATHLOS) project (N = 24,982).

Results

Based on the scenarios from 2012 to 2026, the prevalence of walking limitations will decrease from 9.4 to 6.4%. A physical activity intervention would decrease the prevalence of stair climbing limitations compared with no intervention from 28.9 to 18.9% between 2012 and 2026.

Conclusions

A physical activity intervention implemented on older population seems to have a positive effect on maintaining mobility in the future. Our method provides an interesting option for generating projections by incorporating intervention-based scenarios.

The Impact of Care Partners on the Mobility of Older Adults Receiving Hemodialysis

Rationale & Objective

Many older adults receiving hemodialysis have mobility limitations and rely on care partners, yet data are sparse regarding the support provided by care partners. Our aim was to examine how care partners support the mobility of an older adult receiving hemodialysis.

Study Design

Qualitative study.

Setting & Participants

Using purposive sampling, we recruited persons aged 60 years or more receiving maintenance hemodialysis and care partners aged 18 years or more who were providing support to an older adult receiving hemodialysis. We conducted in-person semi-structured interviews about mobility with each individual.

Analytical Approach

We conducted descriptive and focused coding of interview transcripts and employed thematic analysis. Our outcome was to describe perceived mobility supports provided by care partners using qualitative themes.

Results

We enrolled 31 older adults receiving hemodialysis (42% women, 68% Black) with a mean age of 73 ± 8 years and a mean dialysis duration of 4.6 ± 3.5 years. Of these, 87% of patients used assistive devices and 90% had care partners. We enrolled 12 care partners (75% women, 33% Black) with a mean age of 54 ± 16 years. From our patient and care partner interviews, we found three themes: (1) what care partners see, (2) what care partners do, and (3) what care partners feel. Regarding what they see, care partners witness a decline in patient mobility. Regarding what they do, care partners guide and facilitate activities and manage others who also assist. Regarding what they feel, care partners respect the patient’s autonomy but experience frustration and worry about the patient’s future mobility.

Limitations

Modest sample size; single geographic area.

Conclusions

In older adults receiving hemodialysis, care partners observe a decline in mobility and provide support for mobility. They respect the patient’s autonomy but worry about future mobility losses. Future research should incorporate care partners in interventions that address mobility in older adults receiving hemodialysis.

Telehealth interventions for mobility after lower limb loss: A systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Mobility is a crucial component for healthy aging after lower limb loss (LLL). Telehealth technologies, for example, smart devices, are novel approaches for health programs delivery regardless of geographical boundaries.

OBJECTIVES

To assess the effect of telehealth interventions on mobility, quality of life, and antecedents of health behavior compared with a control condition (usual care or simpler telehealth interventions with fewer number of behavior change techniques [BCTs]) for community-dwelling adults (>50 years) with an LLL and the effect of mode of delivery and BCTs used in telehealth interventions on health outcomes.

STUDY DESIGN

Systematic review and meta-analysis.

METHODS

We systematically searched MEDLINE, PubMed, Embase, Cumulative Index to Nursing and Allied Health Literature, Cochrane, PsycINFO, and SPORTDiscus on January 28, 2021, to identify relevant randomized controlled trials. Two authors independently screened records and assessed risk of bias. We conducted a narrative synthesis of evidence and, when appropriate, used the standardized mean difference (SMD) and mean difference for meta-analyses and the Grading Recommendations Assessment, Development, and Evaluation approach for practice recommendations.

RESULTS

We identified six randomized controlled trials. Telephone was the most common delivery mode (n = 3), and "instructions for performing behaviors" was the most common BCT (n = 5). Very low certainty evidence showed no changes in mobility (six studies: SMD = 0.33 [95% confidence interval [CI] = -0.08, 0.75]), quality of life (two studies: mean difference = -0.08 [95% CI = -0.30, 0.15]), and antecedents of behavior (five studies: SMD = 0.04 [95% CI = -0.28, 0.36]).

CONCLUSIONS

Our review highlights a knowledge gap for the effect of telehealth interventions for people with LLL. Although no promising effect was shown for telehealth interventions, very low certainty evidence precludes making a definitive clinical recommendation.

Association of Hearing Impairment and 24-Hour Total Movement Activity in a Representative Sample of US Adults

IMPORTANCE

Lower physical activity (PA) levels have been proposed as a mechanism to explain the association between hearing loss and various adverse outcomes of aging. But whether hearing loss is associated with lower PA is poorly understood.

OBJECTIVE

To evaluate whether hearing loss is associated with lower levels of PA.

DESIGN, SETTING, AND PARTICIPANTS

This cross-sectional analysis was conducted in a representative sample of US adults (aged 30-69 years) who participated in the 2011-2012 cycle of the National Health and Nutrition Examination Survey (NHANES). Data analysis was conducted from July to September 2021.

EXPOSURES

Hearing was assessed, in dB, by pure-tone audiometry and summarized as the better hearing ear's pure-tone average (BPTA) of 4 speech frequencies (500, 1000, 2000, and 4000 kHz); a higher BTPA indicates worse hearing. Hearing was also categorized into normal (BPTA ≤25 dB), mild hearing impairment (>25 to 40 dB), and moderate or greater hearing impairment (>40 dB).

MAIN OUTCOMES AND MEASURES

Total 24-hour movement activity was measured using wrist accelerometers worn at all times for 7 consecutive days and summarized in monitor-independent movement summary units (MIMS) units (higher MIMS units indicate more movement). The association between BPTA and MIMS units was evaluated using a multivariable-adjusted (demographic characteristics and chronic conditions) piecewise spline regression (knot at 15 dB). Mean differences in MIMS units across hearing categories compared with normal hearing were estimated.

RESULTS

The study included 2490 participants (mean [SE] age, 48.9 [0.3] years; 900 [weighted percentage, 69.3%] White individuals, 1248 [weighted percentage, 50.8%] female participants). Before the knot at 15 dB, we found that each 10-dB higher BPTA was associated with 860.4 (95% CI, 444.8-1276.1) higher MIMS units. Conversely, after the knot, each 10-dB higher BPTA was associated with 458.6 (95% CI, 27.7-889.4) lower MIMS units. The difference in MIMS units across hearing categories was not statistically significant.

CONCLUSIONS AND RELEVANCE

In this cross-sectional study, in the range of hearing sensitivity of BPTA of 15 dB or greater, worse hearing was associated with lower MIMS units. Lower PA may be a mechanism contributing to the association between hearing impairment and adverse health.

Why do older drivers self-regulate: Psychological factors influencing self-regulation in a Chinese sample

INTRODUCTION

As China has recently lifted the age limit for getting access to driving licenses, older drivers' safety issues have received wide attention. Driving self-regulation can be regarded as an adjustment strategy for older adults to reduce risks and extend driving lives. Studies abroad mainly stress the three levels and influencing factors of driving self-regulation. China has a long history with a unique cultural background and social reality and relevant research are still in the initial stage.

METHOD

This study applied the extended Theory of Planned Behavior (TPB) to explore the psychological factors that affected self-regulation of older drivers. 317 participants mainly from Beijing urban area completed the questionnaires including demographic information and extend TPB items.

RESULTS

Bivariate correlation analysis showed that self-regulation was negatively correlated with the amount of driving experience (days per week and mileages per month) in a significant way. And so was the number of family-owned motor vehicles. Exploratory factor analysis indicated that the extended TPB questionnaire was reliable and effective for measuring self-regulation. The proposed Structural Equation Model (SEM) explained 73.673% of the variance in self-regulation intention. Attitude (0.50) had the strongest influence among all variables on intention. Subjective norms (0.28), perceived behavior control (0.27), and alternative traffic quality (0.20) significantly influenced intention. Intention (0.34) and physical condition (0.22) imposed significant effect on self-regulation behavior. Practical applications: Feasible suggestions were put forward that contribute to self-regulate reasonably. This study helps to better understand the nature of self-regulation behaviors and provides a theoretical basis for formulating scientific intervention measures. On the transportation side, people from all communities of society should care for and support older drivers.

Environment in institutional care settings as a promoting factor for older individuals' mobility: A systematic review

Background

Mobility is important for health and well‐being; however, older individuals in institutional care settings are relatively sedentary. The environment has an increased influence on mobility in older age due to changes in individual functioning; thus, environmental mobility support solutions for this population are needed.

Objectives

The aim of this systematic review was to identify elements of the environment that have been used in the content and delivery of interventions to promote mobility and to assess the effects of these interventions on mobility outcomes.

Design

A systematic literature search was conducted using CINAHL and MEDLINE from the earliest date through 30 September 2020 for randomised controlled trials, quasi‐experimental and pre‐post design studies. Inclusion and critical appraisal of articles were conducted by two independent researchers. Data were extracted and synthesised.

Setting and participants

Studies were included if they had employed some element of the environment in the content and/or delivery of the intervention and had assessed mobility‐related outcomes of older individuals in institutional long‐term care settings providing full‐time care.

Measures

Studies were included if they reported data on mobility‐related outcomes including aspects of physical activity, physical function, life space and functional autonomy.

Results

Eight studies were included. Physical, social and symbolic elements of the environment were utilised in the interventions. Positive effects on mobility outcomes were reported in exercise interventions utilising environmental elements mostly as supportive components.

Conclusions and implications

Empirical evidence about effective mobility interventions employing elements of the environment as main intervention components is lacking. A serious dilemma exists about the need for older individuals’ independence and mobile/active late life and the lack of support for such initiatives in long‐term care. Given the emphasised relationship of the environment and mobility with age due to changes in functioning, environmental solutions require further examination.

Moving around a Large City in Latin America: The Mobility Challenges Faced by Older Adults with Disabilities

A growing body of research has shown that barriers in the urban environment can be disabling by reducing the ability of older people to manage independently in the community, but also because they can negatively affect health by limiting the possibilities to move outside the home. In this study, we ask how obstacles in the urban environment are associated with the need for help to go to places in the community. To respond to this question, we used the Annual Household Survey of the City of Buenos Aires, Argentina 2018, which had a specific questionnaire for people with disabilities. From this sample, we selected adults aged 65 years or older with difficulties in at least one of six domains: vision; hearing; upper and lower body mobility; cognition; self-care; and communication. The final sample consisted of 513 persons (weighted = 109,316). First, we conducted a principal component analysis identifying three factors from variables of obstacles to access and use the urban environment: transportation; outdoor spaces; and information. Second, through a logistic regression model, we observed a direct relationship between these factors and the need for help to move in the community, controlling for sociodemographic characteristics, health status, and number of disabilities. This paper provides evidence on the significance of improving urban spaces to reduce dependent mobility. In Latin America, cities still face many challenges in becoming more age-friendly.

Nature in virtual reality improves mood and reduces stress: evidence from young adults and senior citizens

Large populations worldwide have been deprived from nature experiences due to mass quarantines and lockdowns during the COVID-19 pandemic, and face a looming mental health crisis. Virtual reality offers a safe and practical solution to increase nature exposure. This research examined the effects of virtual nature using a within-subject design with young adults (Study 1) and senior citizens (Study 2). Results from the young adult sample showed that walking in a virtual forest reduced negative affect due to enhanced nature connectedness, and reduced stress measured by heart rate. Consistently, the senior citizen sample reported improved positive affect due to enhanced nature connectedness after the virtual nature walk. Our findings unveil the underlying mechanism of how virtual nature may improve psychological well-being and demonstrated how virtual nature can be used as an intervention to promote mental health.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s10055-021-00604-4.

Trajectories of low back pain from midlife to retirement and functional ability at old age

BACKGROUND

This study aimed to identify trajectories of low back pain (LBP) over a 16-year follow-up from midlife to retirement and investigate their association with mobility limitations and disability in activities of daily living (ADL-disability) in later life.

METHODS

The study population consisted of 6257 baseline (1981) respondents aged 44-58 years from Finnish Longitudinal study on Aging Municipal Employees. Repeated measurements of LBP were collected in 1985, 1992 and 1997. We studied persons who had data on LBP at baseline and in at least one of the follow-ups and had information on mobility limitations (n = 2305) and ADL-disability (n = 2359) at a 28-year follow-up in 2009. Latent class growth analysis was used to identify LBP trajectories. Odds ratios (ORs) with 95% confidence intervals (CIs) for the associations of LBP trajectory and later life mobility limitations and ADL-disability were estimated and adjusted for confounders.

RESULTS

Three LBP trajectories with parallel shapes were identified: high-decreasing (19%), intermediate-stable (60%) and low (21%). After adjustment for confounders, high-decreasing trajectory had 3.2 times the odds (95% CI 2.1-4.9) of mobility limitations and 2.9 times the odds (95% CI 2.0-4.2) of ADL-disability as compared to low trajectory. The respective ORs for intermediate-stable trajectory were 1.6 (95% CI 1.2-2.1) and 1.7 (95% CI 1.3-2.3).

CONCLUSIONS

Among majority of respondents, LBP remained stable over the follow-up. The respondents belonging to intermediate-stable and high-decreasing trajectories of LBP had higher odds of mobility limitations and ADL-disability at old age. This highlights that LBP during midlife to retirement has far-reached consequences on functional ability at old age.

Quantity versus quality: Age-related differences in muscle volume, intramuscular fat, and mechanical properties in the triceps surae

With aging comes reductions in the quality and size of skeletal muscle. These changes influence the force-generating capacity of skeletal muscle and contribute to movement deficits that accompany aging. Although declines in strength remain a significant barrier to mobility in older adults, the association between age-related changes in muscle structure and function remain unresolved. In this study, we compared age-related differences in (i) muscle volume and architecture, (ii) the quantity and distribution of intramuscular fat, and (iii) muscle shear modulus (an index of stiffness) in the triceps surae in 21 younger (24.6 ± 4.3 years) and 15 older (70.4 ± 2.4 years) healthy adults. Additionally, we explored the relationship between muscle volume, architecture, intramuscular fat and ankle plantar flexion strength in young and older adults. Magnetic resonance imaging was used to determine muscle volume and intramuscular fat content. B-mode ultrasound was used to quantify muscle architecture, shear-wave elastography was used to measure shear modulus, and ankle strength was measured during maximal isometric plantar flexion contractions. We found that older adults displayed higher levels of intramuscular fat yet similar muscle volumes in the medial (MG) and lateral gastrocnemius (LG) and soleus, compared to younger adults. These age-related higher levels of intramuscular fat were associated with lower muscle shear modulus in the LG and MG. We also found that muscle physiological cross-sectional area (PCSA) that accounted for age-associated differences in intramuscular fat showed a modest increase in its association with ankle strength compared to PCSA that did not account for fat content. This highlights that skeletal muscle fat infiltration plays a role in age-related strength deficits, but does not fully explain the age-related loss in muscle strength, suggesting that other factors play a more significant role.

Survey of Occupational Therapy Driver Assessors' Rehabilitation Interventions With Older Drivers

The rehabilitation strategies used by occupational therapy driver assessors with older drivers with age-related decline or health conditions are not well understood. The objective of the study was to describe driver rehabilitation interventions used by Australian driver assessors, identify factors that guide rehabilitation choices, and identify barriers and facilitators encountered. An online survey was emailed to 300 driver assessors. Descriptive statistics were used to summarize and to rank order participant responses. A total of 148 respondents selected from a combined total of 655 interventions. The four most common rehabilitation methods were (a) graded driving (18%, n = 118), (b) practicing specific maneuvers (17.7%, n = 116), (c) using a modified vehicle (16.9%, n = 111), and (d) graded driving in local areas only (15.1%, n = 99). The most common barrier limiting driver rehabilitation was cost (M = 2.92, SD = 1.24). The most frequently used driver rehabilitation method was on-road training. Practice can be enhanced by collating and evaluating resources, and ensuring effective interventions are more accessible.

Are Mobile Persons With Parkinson Disease Necessarily More Active?

BACKGROUND AND PURPOSE

Walking activity in persons with Parkinson disease (PD) is important for preventing functional decline. The contribution of walking activity to home and community mobility in PD is poorly understood.

METHODS

Cross-sectional baseline data (N = 69) were analyzed from a randomized controlled PD trial. The Life-Space Assessment (LSA) quantified the extent, frequency, and independence across 5 expanding levels of home and community mobility, producing individual subscores and a total score. Two additional summed scores were used to represent mobility within (Levels 1-3) and beyond (Levels 4-5) neighborhood limits. An accelerometer measured walking activity for 7 days. Regression and correlation analyses evaluated relationships between daily steps and mobility scores. Mann-Whitney U tests secondarily compared differences in mobility scores between the active and sedentary groups.

RESULTS

Walking activity contributed significantly to the summed Level 1-3 score (β = 0.001, P = 0.004) but not to the summed Level 4-5 (β = 0.001, P = 0.33) or total (β = 0.002, P = 0.07) scores. Walking activity was significantly related to Level 1 (ρ = 0.336, P = 0.005), Level 2 (ρ = 0.307, P = 0.010), and Level 3 (ρ = 0.314, P = 0.009) subscores. Only the summed Level 1-3 score (P = 0.030) was significantly different between the active and sedentary groups.

DISCUSSION AND CONCLUSIONS

Persons with PD who demonstrated greater mobility beyond the neighborhood were not necessarily more active; walking activity contributed more so to home and neighborhood mobility. Compared with LSA total score, the Level 1-3 summed score may be a more useful participation-level measure for assessing the impact of changes in walking activity.Video Abstract available for more insights from the authors (see the Video, Supplemental Digital Content 1 available at: http://links.lww.com/JNPT/A349).