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 (ß=0.03 95% confidence interval 0.013, 0.047), fall history (ß=-0.04, 95% confidence interval -0.08, -0.04), male sex (ß=0.06, 95% confidence interval 0.02, 0.09), unpleasant neighborhood (ß=-0.06, 95% confidence interval -0.11, -0.02), musculoskeletal pain (ß=-0.07, 95% confidence interval -0.11, -0.03), and self-reported health (ß=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.

Home-based gait speed and the association with sociodemographic and anthropometric variables: A national study (ELSI-Brazil).

OBJECTIVES: To investigate home-based gait speed performance for men and women stratified by age group and its associations with sociodemographic and anthropometric variables. METHODS: Data from the 2nd wave of the Brazilian Longitudinal Study of Aging (ELSI-Brazil, 2019-2021) were used. Gait speed was tested twice at home over 3.0 meters at usual pace. Associations of sociodemographic and anthropometric variables with gait speed were evaluated using gamma regression. RESULTS: Median gait speed value reduced with increasing age in both sexes [men: 0.70 m/s (50-59 years) to 0.53 m/s (≥80 years); women: 0.68 m/s (50-59 years) to 0.48 m/s (≥80 years)] and was significantly lower in women than men in the age groups of 60-69 and 70-79 years. Age group and education among men and age group, education, and waist circumference among women were significantly associated with gait speed. CONCLUSIONS: Our findings may be helpful as reference values to identify mobility limitation among older Brazilians.

Do Older Brazilian Women Who Participate in a Regular Physical Exercise Program Have Higher Habitual Physical Activity Levels? A Cross-Sectional Study Based on Accelerometer Data.

A cross-sectional study was conducted to compare the habitual physical activity level, measured by accelerometry, gait performance, assessed by the GAITRite® system, handgrip strength, and static balance between older Brazilian women who participate (n = 50; 70.7 ± 5.5 years) and do not participate (n = 50; 70.1 ± 5.6 years) in a regular physical exercise program, and to investigate whether participation in a regular exercise program ensures compliance with physical activity recommendations. Older women who participated in a regular physical exercise program had significantly shorter sedentary activity time (effect size [ES] = 0.54), longer moderate activity time (ES = 0.85), and higher energy expenditure (ES = 0.64), number of steps (ES = 0.82), gait speed (ES = 0.49), and step length (ES = 0.45). However, regular participation in an exercise program did not guarantee compliance with physical activity recommendations. Behavioral changes to increase physical activity levels among older women who do and do not participate in a regular exercise program are necessary.

A prospective study to establish the minimal clinically important difference of the Mini-BESTest in individuals with stroke.

OBJECTIVE: To determine the minimal clinically important difference of the Mini-BESTest in individuals' post-stroke. DESIGN: Prospective cohort study. SETTING: Outpatient stroke rehabilitation. SUBJECTS: Fifty outpatients with stroke with a mean (SD) age of 60.8 (9.4). INTERVENTION: Outpatients with stroke were assessed with the Mini-BESTest before and after a course of conventional rehabilitation. Rehabilitation sessions occurred one to two times/week for one hour and treatment duration was 1.3-42 weeks (mean (SD) = 17.4(10.6)). MAIN MEASURES: We used a combination of anchor- and distribution-based approaches including a global rating of change in balance scale completed by physiotherapists and patients, the minimal detectable change with 95% confidence, and the optimal cut-point from receiver operating characteristic curves. RESULTS: The average (SD) Mini-BESTest score at admission was 18.2 (6.5) and 22.4 (5.2) at discharge (effect size: 0.7) (P = 0.001). Mean change scores on the Mini-BESTest for patient and physiotherapist ratings of small change were 4.2 and 4.3 points, and 4.7 and 5.3 points for substantial change, respectively. The minimal detectable change with 95% confidence for the Mini-BESTest was 3.2 points. The minimally clinical importance difference was determined to be 4 points for detecting small changes and 5 points for detecting substantial changes. CONCLUSIONS: A change of 4-5 points on the Mini-BEST is required to be perceptible to clinicians and patients, and beyond measurement error. These values can be used to interpret changes in balance in stroke rehabilitation research and practice.

Effectiveness of exercises by telerehabilitation on pain, physical function and quality of life in people with physical disabilities: a systematic review of randomised controlled trials with GRADE recommendations.

OBJECTIVE: Investigate whether exercise-based telerehabilitation improves pain, physical function and quality of life in adults with physical disabilities. DESIGN: Systematic review of randomised controlled trials. DATA SOURCES: Searches were performed in AMED, MEDLINE, CINAHL, SPORTDiscus, Embase, PEDro, Cochrane Library and PsycINFO. ELIGIBILITY CRITERIA: Trials were considered if they evaluated exercise by telerehabilitation. The population included adults with physical disability. Comparisons were control and other interventions. The outcomes were pain, physical function and quality of life. Study selection, data extraction and analysis followed the protocol registered in PROSPERO (CRD42019122824). GRADE determined the strength of evidence. RESULTS: Forty-eight trials were included in the quantitative analysis. When compared with other interventions, there was high-quality evidence that telerehabilitation was not different to other interventions for pain (95% CI: -0.4 to 0.1), physical function (95% CI: -0.2 to 0.2) and quality of life (95% CI: -0.1 to 0.5) at long-term. There was moderate-quality evidence that telerehabilitation was not different to other interventions for physical function (95% CI: -0.1 to 0.5) and quality of life (95% CI: -0.2 to 0.5) at short-term. However, due to the low-quality evidence and the small number of trials comparing exercise protocols offered by telerehabilitation with control groups, it is still not possible to state the efficacy of telerehabilitation on pain, function and quality of life at short-term and long-term. CONCLUSIONS: Exercise by telerehabilitation may be an alternative to treat pain, physical function and quality of life in adults with physical disabilities when compared with other intervention.

The burden of disease among Brazilian older adults and the challenge for health policies: results of the Global Burden of Disease Study 2017.

BACKGROUND: Brazil is the world's fifth most populous nation, and is currently experimenting a fast demographic aging process in a context of scarce resources and social inequalities. To understand the health profile of older adults in Brazil is fundamental for planning public policies. METHODS: The estimates were derived from data obtained through the collaboration between the Brazilian Ministry of Health and the Institute of Health Metrics and Evaluation of the University of Washington. The Brazilian Institute of Geography and Statistics provided the population estimates. Data on causes of death came from the Mortality Information System. To calculate morbidity, population-based studies on the prevalence of diseases in Brazil were comprehensively searched, in addition to information obtained from national databases such as the Hospital Information System, the Outpatient Information System, and the Injury Information System. We presented the Global Burden of Disease (GBD) 2017 estimates among Brazilian older adults (60+ years old) for life expectancy at birth (LE), healthy life expectancy (HALE), cause-specific mortality, years of life lost (YLLs), years lived with disability (YLDs), and disability-adjusted life years (DALYs), from 2000 to 2017. RESULTS: LE at birth significantly increased from 71.3 years (95% UI to 70.9-71.8) to 75.2 years (95% UI 74.7-75.7). There was a trend of increasing HALE, from 62.2 years (95% UI 59.54-64.5) to 65.5 years (95% UI 62.6-68.0). The proportion of DALYs among older adults increased from 7.3 to 10.3%. Chronic noncommunicable diseases are the leading cause of death among middle aged and older adults, while Alzheimer's disease is a leading cause only among older adults. Mood disorders, musculoskeletal pain, and hearing or vision losses are among the leading causes of disability. CONCLUSIONS: The increase in LE and the decrease of the DALYs rates are probably results of the improvement of social conditions and health policies. However, the smaller increase of HALE than LE means that despite living more, people spend a substantial time of their old age with disability and illness. Preventable or potentially controllable diseases are responsible for most of the burden of disease among Brazilian older adults. Health investments are necessary to obtain longevity with quality of life in Brazil.

Validity of balance and mobility screening tests for assessing fall risk in COPD.

People with chronic obstructive pulmonary disease (COPD) have balance impairments and an increased risk of falls. The psychometric properties of short balance tests to inform fall risk assessment in COPD are unknown. Our objective was to determine the validity (concurrent, convergent, and known-groups) of short balance and mobility tests for fall risk screening. Participants with COPD aged ≥ 60 years attended a single assessment. Correlation coefficients described the relationships between the Brief Balance Evaluation Systems Test (Brief BESTest), Single-Leg Stance (SLS), Timed Up and Go (TUG), and Timed Up and Go Dual-Task (TUG-DT) tests, with the comprehensive Berg Balance Scale (BBS), chair-stand test, and measures of exercise tolerance, functional limitation, disability, and prognosis. Independent t-tests or Mann-Whitney U tests were used to examine differences between groups with respect to fall risk. Receiver operating characteristic curves examined the ability of the screening tests to identify individuals with previous falls. A total of 86 patients with COPD completed the study (72.9 ± 6.8 years; forced expiratory volume in 1 second: 47.3 ± 20.3% predicted). The Brief BESTest identified individuals who reported a previous fall (area under the curve (AUC) = 0.715, p = 0.001), and the SLS showed borderline acceptable accuracy in identifying individuals with a fall history (AUC = 0.684, p = 0.004). The strongest correlations were found for the Brief BESTest and SLS with the BBS (r = 0.80 and r = 0.72, respectively) and between the TUG and TUG-DT with the chair-stands test (r = 0.73 and r = 0.70, respectively). The Brief BESTest and SLS show the most promise as balance screening tools for fall risk assessment in older adults with COPD. These tests should be further evaluated prospectively.

Analysis of symmetry between lower limbs during gait of older women with bilateral knee osteoarthritis.

BACKGROUND: Osteoarthritis (OA) is a common condition in older adults, with high epidemiological, clinical, and economic burden worldwide. In clinical practice, patients with knee OA often walk with abnormal gait patterns because of pain, stiffness and/or mobility dysfunctions. Therefore, assessing the symmetry of the lower limbs might improve the rehabilitation treatment and prescription of walking devices. AIMS: To compare the symmetry of step length and single support phase between lower limbs during gait of older women with bilateral knee OA and asymptomatic controls, and to verify if there is difference between these two groups in relation to velocity, cadence, step length and single support phase. METHODS: This cross-sectional study included a convenience sample of 66 community-dwelling older women aged ≥ 65 years with a medical diagnosis of symptomatic bilateral knee OA (n = 33) and asymptomatic controls (n = 33), matched by age and body mass index. All gait parameters were obtained using the GAITRite® system. RESULTS: Mean age of the sample was 72.6 ± 4.0 years. Participants with OA walked with lower velocity (p = 0.001), cadence (p = 0.009) and step length bilaterally (both p = 0.001). No significant difference was found between groups in the symmetry of step length between lower limbs, single support phase and symmetry of single support phase between lower limbs. CONCLUSION: Older women with bilateral knee OA walk with lower velocity, cadence and step length, but have the same symmetry in the step length and single support phase between lower limbs as asymptomatic older women.

The geriatric depression scale and the timed up and go test predict fear of falling in community-dwelling elderly women with type 2 diabetes mellitus: a cross-sectional study.

BACKGROUND: Fear of falling is a common and potentially disabling problem among older adults. However, little is known about this condition in older adults with diabetes mellitus. The aims of this study were to investigate the impact of the fear of falling on clinical, functional and gait variables in older women with type 2 diabetes and to identify which variables could predict the fear of falling in this population. METHODS: Ninety-nine community-dwelling older women with type 2 diabetes (aged 65 to 89 years) were stratified in two groups based on their Falls Efficacy Scale-International score. Participants with a score < 23 were assigned to the group without the fear of falling (n = 50) and those with a score ≥ 23 were assigned to the group with the fear of falling (n = 49). Clinical data included demographics, anthropometrics, number of diseases and medications, physical activity level, fall history, frailty level, cognition, depressive symptoms, fasting glucose level and disease duration. Functional measures included the Timed Up and Go test (TUG), the five times sit-to-stand test (5-STS) and handgrip strength. Gait parameters were obtained using the GAITRite® system. RESULTS: Participants with a fear of falling were frailer and presented more depressive symptoms and worse performance on the TUG and 5-STS tests compared with those without a fear of falling. The group with the fear of falling also walked with a lower velocity, cadence and step length and increased step time and swing time variability. The multivariate regression analysis showed that the likelihood of having a fear of falling increased 1.34 times (OR 1.34, 95 % CI 1.11-1.61) for a one-point increase in the Geriatric Depression Scale (GDS-15) score and 1.36 times (OR 1.36, 95 % CI 1.07-1.73) for each second of increase in the TUG performance. CONCLUSIONS: The fear of falling in community-dwelling older women with type 2 diabetes mellitus is associated with frailty, depressive symptoms and dynamic balance, functional mobility and gait deficits. Furthermore, both the GDS-15 and the TUG test predict a fear of falling in this population. Therefore, these instruments should be considered during the assessment of diabetic older women with fear of falling.

Clinical functional tests help identify elderly women highly concerned about falls.

UNLABELLED: BACKGROUND/STUDY CONTEXT: Limited research exists on functional tests in the discrimination of elderly individuals with high concern about falls from individuals with low concern about falls. The purpose of this study was to determine which functional test best discriminates between elderly women with low and high concern about falls. METHODS: One hundred thirty-five elderly women (72.6 ± 4.8 years) were divided into two groups based on their Falls Efficacy Scale-International score: low concern (n = 56) and high concern (n = 79) about falls. Five functional tests were applied: Timed Up and Go test (TUG), unipodal stance test, five-repetition sit-to-stand test (5-STS), gait velocity, and grip strength. Factorial analysis and discriminant analysis were used. RESULTS: Factorial analysis resulted in three factors that explained 83.8% of the total variance. Factor 1, with 49.5% of total variance explanation, was represented by the TUG, 5-STS, and gait velocity tests and was the only factor to discriminate between the groups, classifying correctly 68.9% of the observations. Among the original variables of Factor 1, the Fisher linear coefficient showed that the TUG was the most discriminant of the tests. CONCLUSION: The TUG test best discriminates elderly women with low and high concern about falls; therefore, it is an important test that should be performed during the assessment of elderly individuals afraid of falling.

Validation of the human activity profile questionnaire as a measure of physical activity levels in older community-dwelling women.

The purpose of this study was to assess the validity of the Human Activity Profile (HAP) by comparing scores with accelerometer data and by objectively testing its cutoff points. This study included 120 older women (age 60-90 years). Average daily time spent in sedentary, moderate, and hard activity; counts; number of steps; and energy expenditure were measured using an accelerometer. Spearman rank order correlations were used to evaluate the correlation between the HAP scores and accelerometer variables. Significant relationships were detected (rho = .47-.75, p < .001), indicating that the HAP estimates physical activity at a group level well; however, scatterplots showed individual errors. Receiver operating characteristic curves were constructed to determine HAP cutoff points on the basis of physical activity level recommendations, and the cutoff points found were similar to the original HAP cutoff points. The HAP is a useful indicator of physical activity levels in older women.

Validation of the Human Activity Profile Questionnaire as a Measure of Physical Activity Levels in Older Community-Dwelling Women.

The purpose of this study was to assess the validity of the Human Activity Profile (HAP) by comparing scores with accelerometer data and by objectively testing its cutoff points. This study included 120 older women (age 60-90 years). Average daily time spent in sedentary, moderate, and hard activity; counts; number of steps; and energy expenditure were measured using an accelerometer. Spearman rank order correlations were used to evaluate the correlation between the HAP scores and accelerometer variables. Significant relationships were detected (rho = .47-.75, p < .001), indicating that the HAP estimates physical activity at a group level well; however, scatterplots showed individual errors. Receiver operating characteristic curves were constructed to determine HAP cutoff points on the basis of physical activity level recommendations, and the cutoff points found were similar to the original HAP cutoff points. The HAP is a useful indicator of physical activity levels in older women.

Long-Term Functional Limitations and Predictors of Recovery After COVID-19: A Multicenter Prospective Cohort Study.

BACKGROUND: Limited data exist on post-severe COVID-19 functional trajectory, particularly considering premorbid status. We characterized 1-year functional recovery post-hospitalization for COVID-19, highlighting predictors of long-term recovery. METHODS: We enrolled adult patients with lab-confirmed SARS-CoV-2 infection and hospitalized for COVID-19 sequelae, from five major Ontario, Canada hospitals in a prospective cohort study. Assessments included telephone interviews on admission followed by telephone and in-person assessments at 3-, 6-, 9-, and 12-months post-discharge. The Activity-Measure for Post-Acute Care (AM-PAC) Mobility and Cognition scales were administered at baseline and every 3 months for 1 year. Secondary outcomes included symptoms, spirometry, physical performance, dyspnea, fatigue, distress, anxiety and depression, and quality of life. RESULTS: A total of 254 patients (57.1% male) with a mean age of 60.0 (±13.1) years and an average hospital stay of 14.3 (±19.7) days agreed to participate. At 12 months, 55.3% demonstrated clinically important deficits in mobility and 38.8% had cognitive deficits compared to premorbid levels. Fatigue was reported in 44.2%, followed by difficulty walking long distances in 35.8% and dyspnea in 33.0%. Almost 40% of patients had an FEV1(% Pred) < 80% at 12 months, 60.3% had impairments in physical performance, and 44.5% had problems with anxiety or depression. Predictors of better mobility at 12 months included higher premorbid mobility status, male sex, shorter hospital stay, fewer comorbidities, and higher FEV1 (% pred) at the 3-month follow-up. CONCLUSIONS: Our study provides compelling evidence of the long-term impact of COVID-19 on functional and cognitive status 1-year post-infection.

Influence of reduced passive ankle dorsiflexion range of motion on lower limb kinetics and stiffness during gait.

BACKGROUND: The ankle dorsiflexion range of motion (ADF-ROM) during single support phase allows elastic energy storage in the calcaneal tendon, contributing to advance the body forward. Reduced ADF-ROM may influence lower limb kinetics and stiffness. RESEARCH QUESTION: What is the influence of reduced passive ADF-ROM on lower limb internal moments and stiffness during gait? METHODS: Thirty-two participants, classified into two groups according to passive ADF-ROM (smaller than 10° and greater than 15°), were submitted to gait assessment at self-selected speed with a force platform and a three-dimensional motion analysis system. Statistical parametrical mapping (SPM) analyses were used to compare the lower limbs' internal moments between groups. Independent t-tests analyzed the differences between groups on lower limb stiffness during gait. RESULTS: The lower ADF-ROM group had greater knee flexor moment (terminal stance and push-off), greater ankle abductor (i.e., shank internal rotator) moment in terminal stance and greater knee internal rotator moment in mid to terminal stance. The lower ADF-ROM group also had higher lower limb stiffness during gait. SIGNIFICANCE: Individuals with reduced passive ADF-ROM had greater lower limb stiffness and adopted a gait pattern with increased knee and ankle moments, suggesting increased loading at these joints.

Monitoring mobility in older adults using a Global Positioning System (GPS) smartwatch and accelerometer: A validation study.

There is growing interest in identifying valid and reliable methods for detecting early mobility limitations in aging populations. A multi-sensor approach that combines accelerometry with Global Positioning System (GPS) devices could provide valuable insights into late-life mobility decline; however, this innovative approach requires more investigation. We conducted a series of two experiments with 25 older participants (66.2±8.5 years) to determine the validity of a GPS enabled smartwatch (TicWatch S2 and Pro 3 Ultra GPS) and separate accelerometer (ActiGraph wGT3X-BT) to collect movement, navigation and body posture data relevant to mobility. In experiment 1, participants wore the TicWatchS2 and ActiGraph simultaneously on the wrist for 3 days. In experiment 2, participants wore the TicWatch Pro 2 Ultra GPS on the wrist and ActiGraph on the thigh for 3 days. In both experiments participants also carried a Qstarz data logger for trips outside the home. The TicWatch Pro 3 Ultra GPS performed better than the S2 model and was similar to the Qstarz in all tested trip-related measures, and it was able to estimate both passive and active trip modes. Both models showed similar results to the gold standard Qstarz in life-space-related measures. The TicWatch S2 demonstrated good to excellent overall agreement with the ActiGraph algorithms for the time spent in sedentary and non-sedentary activities, with 84% and 87% agreement rates, respectively. Under controlled conditions, the TicWatch Pro 3 Ultra GPS consistently measured step count in line with the participants' self-reported data, with a bias of 0.4 steps. The thigh-worn ActiGraph algorithm accurately classified sitting and lying postures (97%) and standing postures (90%). Our multi-sensor approach to monitoring mobility has the potential to capture both accelerometer-derived movement data and trip/life-space data only available through GPS. In this study, we found that the TicWatch models were valid devices for capturing GPS and raw accelerometer data, making them useful tools for assessing real-life mobility in older adults.

Exploring Distress and Occupational Participation Among Older Canadians During the COVID-19 Pandemic.

Background. The coronavirus disease 2019 (COVID-19) pandemic disrupted daily life with corresponding implications on levels of distress. Purpose. To describe factors associated with high distress among community-dwelling older adults during the first lockdown and explore how occupational participation was managed. Methods. A mixed methods design whereby multivariate regression analysis of a survey (N = 263) identified factors associated with high distress, as per the Impact of Events of Scale-Revised (IES-R). Follow-up interviews with a sub-sample of those surveyed who reflected a range of IES-R scores were conducted (N = 32). Findings. Those with lower resilience and anxiety/depression had 6.84 and 4.09 greater odds respectively of high distress. From the interviews, the main theme, "Lost and Found," and subthemes (Interruption and Disruption; Surving, not Thriving; Moving Forward, Finding Meaning) highlighted the process and corresponding stages, including adaptive strategies, by which participants navigated changes in their occupational participation. Implications. While the results suggest that many older adults, including those with high distress, were able to manage daily life under lockdown, some experienced ongoing challenges in doing so. Future studies should focus on those who experienced or who are at-higher risk for such challenges to identify supports that mitigate adverse consequences if another event of this magnitude occurs again.

Clinimetric Properties of the Applied Kinesiology Manual Muscle Test in Adults With and Without Pain: A Methodological Study.

Objective: The purpose of this study was to determine the intra- and interexaminer reliability, concurrent validity, and responsiveness of the applied kinesiology manual muscle test (AK-MMT) to discriminate gluteus medius muscle strength and latency. Methods: A cross-sectional and methodological study was conducted in 38 participants using electromyography, electrogoniometry, and hand-held dynamometry to measure latency, angular displacement, and muscle force during the assessment of the gluteus medius by AK-MMT. Inter- and intrarater reliability of 2 examiners with different levels of experience were obtained using the intraclass correlation coefficient. Muscle force, latency, and joint angular displacement were compared between groups (facilitated vs inhibited). Latency and angular displacement also were compared within groups by using the Wilcoxon paired test. For the concurrent validity of the AK-MMT in classifying an inhibited muscle as weak, the receiver operating characteristic curve was conducted. Results: Intra- and interexaminer reliability for the facilitated vs inhibited classifications based on AK-MMT presented good results, with intraclass correlation coefficient > 0.86. For the inhibited group, force and peak force were significantly lower and joint displacement significantly greater. The receiver operating characteristic curve showed an area under the curve of 0.743, demonstrating that the test has concurrent validity (P = .001) to discriminate muscle force. The Wilcoxon paired test showed a significant delay in latency of the inhibited gluteus medius group (0.10 s vs 0.18 s, P = .007) when compared with the facilitated one. Conclusion: In this study, we found good intra- and interexaminer reliability and concurrent validity for the AK-MMT to determine differences in gluteus medius muscle force. Although the paired data showed a different latency time between groups, the hypothesis of prolonged latency in muscles classified as inhibited by AK-MMT still needs further investigation.

Spatial-temporal parameters, pelvic and lower limb movements during gait in individuals with reduced passive ankle dorsiflexion.

BACKGROUND: Proper ankle dorsiflexion range of motion (ADF-ROM) allows the anterior roll of the tibia relative to the foot during the midstance phase of gait, which contributes to forward movement of the body. Individuals with reduced passive ADF-ROM may present altered movement patterns during gait due to an inefficient anterior tibial roll over the support foot during the stance phase. RESEARCH QUESTION: What is the influence of reduced passive ADF-ROM on the pelvic and lower limb movements and spatiotemporal parameters during gait? METHOD: Thirty-two participants divided into two groups according to the degree of passive ADF-ROM-less than 10° (lower ADF-ROM group) or greater than 15° (higher ADF-ROM group) -were subjected to gait assessment using a three-dimensional motion analysis system. Independent t-tests were used to compare the pelvic and lower limb movements and spatiotemporal gait parameters between the groups on this cross-sectional study. RESULTS: The lower ADF-ROM group had shorter step length, lower peak of pelvic ipsilateral rotation angle, and lower hip and knee maximum flexion angles in the stance phase (p < 0.05). In addition, the peaks of the ankle and forefoot-rearfoot dorsiflexion angles were smaller in the reduced ADF-ROM group (p < 0.05). The between-group differences presented effect sizes varying from moderate to large. SIGNIFICANCE: Individuals with reduced passive ADF-ROM presented reduced foot and ankle dorsiflexion, knee and hip flexion, and pelvis rotation movements and shorter step length during gait. However, no differences in foot pronation were noted between groups. Therefore, individuals with reduced passive ADF-ROM present alterations in the lower limb and pelvic movements during gait.

Participation Among Community-Dwelling Older Adults During the COVID-19 Pandemic: A Cross-Sectional Analysis.

OBJECTIVE: Participation in life situations is a critical aspect of health recognized by the World Health Organization. Guidelines to prevent spreading of COVID-19 place older adults at risk of worsening participation. The purpose of this study was to identify the factors associated with participation during the COVID-19 pandemic among community-dwelling older adults living in Hamilton, Ontario, Canada. METHODS: Participants were recruited from identified census dissemination areas in Hamilton. Participants completed surveys either by phone or online during the months of May to August 2020. Measures were organized into factors related to body functions and structures, activities, participation, as well as personal and environmental contextual factors using the International Classification of Functioning, Disability, and Health (ICF) framework. Multivariable regression analysis was conducted to identify factors associated with participation as measured by the Late-Life Disability Instrument's (LLDI) frequency and limitations scales. RESULTS: A total of 272 older adults completed the survey (78 [7.3] years; 70% female). Use of a walking aid, driving status, perceived mental health status, nutrition risk, and physical function explained 48.2% of the variance observed in the LLDI-frequency scale scores. Use of a walking aid, driving status, perceived mental health status, receiving health assistance, and physical function explained 38.5% of the variance observed in the LLDI-limitation scale scores. CONCLUSION: Results highlighted factors across multiple ICF domains that are associated with participation restriction among a sample of community-dwelling older adults during the pandemic. Participation during the pandemic was greatest in those that were able to walk without needing to use a walking aid, being a licensed and current driver, perceiving good to excellent mental health, and having greater physical function. IMPACT: Our findings contribute to the literature on older adult participation during lockdowns, restrictions, pandemics, and/or other similar circumstances.