Predicting falls with the cognitive timed up-and-go dual task in frail older patients

Multimodal respiratory muscle training and Tai Chi intervention with healthy older adults: A double-blind randomised placebo control trial

BACKGROUND

The World Health Organization reported that one of the major challenges for all countries in the next few years will be the development of preventive approaches to care for older adults. After COVID-19, multimodal interventions have been created to enhance older health, especially targeting respiratory muscles (e.g., inspiratory muscle training [IMT]). The following research aims to explore the combination of two interventions (IMT and Tai Chi) using a randomised, double-blind placebo approach.

METHODS

A total of 30 participants were recruited from the local community in Derby (UK) and underwent an experimental (IMT + Tai Chi) or placebo (sham-IMT + Tai Chi) training protocol. Measurements of balance (i.e., mini-BEST), inspiratory muscle strength (i.e., Maximal Inspiratory Pressure) and mobility (i.e., 6 Minutes Walking Test) were collected at baseline and after 8 weeks.

RESULTS

The results show that a combination of IMT and Tai Chi significantly improves dynamic balance (P < 0.01) and mobility (P < 0.05) when compared to Tai Chi alone, with an additional positive correlation between balance, mobility and inspiratory muscle strength (P < 0.05).

CONCLUSION

The manuscript is the first to report the combined effects of IMT and Tai Chi in older adults following rigorous methods. The results highlight the relationship between inspiratory muscle and balance, as the results demonstrate a potential link between metaboreflex and balance control, fostering multimodal practices for healthy ageing interventions.

The effect of dual-task training in older adults with total hip arthroplasty: a randomized controlled trial

BACKGROUND

No other study has addressed the effectiveness of dual-task training in the postoperative period of total hip arthroplasty (THA). This study investigated the efficacy of dual-task training in older adults with THA.

METHODS

Patients were randomized into the control group (CG) (n = 14) and intervention group (IG) (n = 14). Patients in the CG received the usual post-operative rehabilitation for 8 weeks. IG-group received 8-week dual-task training in addition to the program given to the CG. Visual Analog Scale (VAS), Harris Hip Score (HHS), Mini-Mental Status Examination (MMSE), Dual Task Questionnaire (DTQ), Cognitive Timed Up and Go Test (cTUG), Lower Extremity Motor Coordination Test (LEMOCOT), 4 m Walking Speed (4MWS), Five Times Sit to Stand Test (FTSST), Activity Specific Balance Confidence Scale (ABC) were used to assess the patients after the sixth week of the surgery and after the two months of the initial assessment.

RESULTS

All evaluated parameters of the intervention group (VAS, HHS, MMSE, DTQ, cTUG, LEMOCOT, 4MWS, FTSST, and ABC) improved significantly after the intervention. Also, significant improvement was seen in all scores (VAS, HHS, MMSE, DTQ, cTUG, LEMOCOT, 4MWS, FTSST, and ABC) except for HHS-pain (0.059) and HHS-deformity (0.157) (p < 0.05) for the control group. The score change of the intervention group was significantly better for all evaluated parameters (VAS, HHS, MMSE, DTQ, LEMOCOT, 4MWS, FTSST, and ABC) (p < 0.05), except cTUG. All parameters of the intervention group were clinically meaningful regarding MCID values, except HHS-pain, HHS-living activities, and cTUG score change. Besides, HHS-pain, HHS-living activities, HHS-deformity, MMSE, LEMOCOT, FTSST, and ABC score change was not meaningful clinically.

CONCLUSION

An eight-week dual-task training provides better results on pain, function, dual-task performance, motor coordination, gait, and balance than usual rehabilitation in patients after 6-weeks of THA. The results showed that patients after THA achieved improvements with gains in motor-cognitive function.

TRIAL REGISTRATION

The study protocol was registered to "clinicaltrials.gov" (Registration Date: 19/08/2023, Clinical Trial Number: NCT06009419|| https://clinicaltrials.gov/study/NCT06009419 ).

Analysis of the characteristics of anticipatory postural adjustments in older adults using smartphones: Association between cognitive and balance functions

OBJECTIVES

Using smartphones, we aimed to clarify the characteristics of anticipatory postural adjustments (APA) in older adults and examine the relationship between cognitive and balance functions.

METHODS

The study participants were 10 young and 13 older adults. An accelerometer built into a smartphone was attached to the lower back (L5) of the participant, and acceleration in the mediolateral direction was measured using a one-leg stance (OLS). As APA features, we analyzed the time to the peak value in the stance direction (peak latency [PL]) and the amount of displacement to the peak value in the stance direction (peak magnitude [PM]). Additionally, the measured PL was divided by PM for each group to obtain the APA ratio (APAr). We investigated the relationship between the APAr and Mini-BESTest subitems.

RESULTS

Older adults showed delayed PL and decreased PM levels (p < 0.01). While in the Mini-BESTest sub-items, deductions were most common in the order of dual-task and single-leg standing, and most participants with low APAr scores were degraded in APA of sub-items. The correlation was observed between APAr and both TUG and dual-task cost (DTC) (r= -0.56, r= -0.67). According to the receiver operating characteristic curve, the APAr value was 1.71 in the older age group.

CONCLUSIONS

Older adults showed delayed PL and decreased PM, and APAr was associated with cognitive and locomotor functions. By evaluating the APAr at the initiation of movement, it may be possible to distinguish the APA of the older adluts from the possible to the impossible of OLS movement.

New quantitative evaluation of anticipatory postural adjustments using a smartphone in patients with Parkinson's disease

OBJECTIVE

To investigate a smartphone-enabled quantitative evaluation of anticipatory postural adjustments (APA) during one-leg stance (OLS) movements among individuals with Parkinson's disease (PD).

METHODS

This cross-sectional study included 10 young controls, 10 older individuals, and 13 individuals with PD. A smartphone and accelerometer were attached to the participants' lower back (L5), and the movements of the lower back toward the stance side during OLS were measured. For acceleration, the time to the peak value in the stance direction (peak latency [PL]) and the amount of displacement to the peak value in the stance direction (peak magnitude [PM]) were analyzed as APA characteristics. Additionally, the measured PL was divided by the PM for each group to obtain the APA ratio (APAr) as a new index.

RESULTS

Individuals with PD showed a delayed PL and decreased PM (vs. young controls: p = .002 for PL, p < .001 for PM) (vs. older individuals: p = .022 for PL, p = .001 for PM). The APAr clustered the young controls, older individuals, and individuals with PD. According to the receiver operating characteristic curve the APAr value was 0.95, and individuals in the PD group were identified (i.e. area under the curve: 0.98; sensitivity: 85.0%; specificity: 100%). Moreover the APAr was correlated with severity and balance ability in individuals with PD (p = .015 for NFOG-Q, p = .028 for UPDRS, p = .036 for TUG, p = .015 for Mini-BESTest, p = .018 for OLS time).

CONCLUSIONS

This smartphone-based evaluation using the APAr index was reflective of disease severity and decreased balance ability among individuals with PD. The facilitation of this measurement can help clinicians and physiotherapists quantitatively evaluate the APA of individuals with PD at laboratories and hospitals as well as in home environments.

Cognitive-motor dual-task interference in Alzheimer's disease, Parkinson's disease, and prodromal neurodegeneration: A scoping review

BACKGROUND

Cognitive-motor interference (CMI) is a common deficit in Alzheimer's (AD) disease and Parkinson's disease (PD) and may have utility in identification of prodromal neurodegeneration. There is lack of consensus regarding measurement of CMI resulting from dual task paradigms.

RESEARCH QUESTION

How are individuals with AD, PD, and prodromal neurodegeneration impacted by CMI as measured by dual-task (DT) performance?

METHODS

A systematic literature search was performed in six datasets using the PRISMA guidelines. Studies were included if they had samples of participants with AD, PD, or prodromal neurodegeneration and reported at least one measure of cognitive-motor DT performance.

RESULTS

4741 articles were screened and 95 included as part of this scoping review. Articles were divided into three non-mutually exclusive groups based on diagnoses, with 26 articles in AD, 56 articles in PD, and 29 articles in prodromal neurodegeneration, and results presented accordingly.

SIGNIFICANCE

Individuals with AD and PD are both impacted by CMI, though the impact is likely different for each disease. We found a robust body of evidence regarding the utility of measures of DT performance in the detection of subtle deficits in prodromal AD and some signals of utility in prodromal PD. There are several key methodological challenges related to DT paradigms for the measurement of CMI in neurodegeneration. Overall, DT paradigms show good potential as a clinical method to probe specific brain regions, networks, and function; however, task selection and effect measurement should be carefully considered.

Tinetti balance performance is associated with mortality in older adults with late-onset Parkinson's disease: a longitudinal study

BACKGROUND

Parkinson's disease (PD) is associated with a 3-fold mortality risk, which is closely related to advancing age. Evidence is lacking regarding the factors associated with the risks of mortality or nursing-home (NH) admission, in elderly patients with PD. We aimed at identifying the clinical characteristics associated with these outcomes, in older community-dwelling patients with late-onset PD.

METHODS

Retrospective, observational analysis of data from geriatric day hospital patients. Motor assessment included Unified Parkinson Disease Rating Scale (UPDRS) part III score, Tinetti Performance Oriented Mobility Assessment (POMA) balance and gait tests, and gait speed. Levodopa equivalent dose, comorbidity, cognitive performance, Activities of Daily Living performance were examined. Cox proportional hazards models were performed to identify the factors associated with mortality and NH admission rate (maximum follow-up time = 5 years).

RESULTS

We included 98 patients, mean age 79.4 (SD = 5.3) of whom 18 (18.3%) died and 19 (19.4%) were admitted into NH, over a median follow-up of 4 years. In multivariate Cox models, poor balance on the Tinetti POMA scale (HR = 0.82 95%CI (0.66-0.96), p = .023) and older age (HR = 1.12 95%CI (1.01-1.25), p = .044) were the only variables significantly associated with increased mortality risk. A Tinetti balance score below 11/16 was associated with a 6.7 hazard for mortality (p = .006). No specific factor was associated with NH admissions.

CONCLUSIONS

Age and the Tinetti POMA score were the only factors independently associated with mortality. The Tinetti POMA scale should be considered for balance assessment and as a screening tool for the most at-risk individuals, in this population.

Remote versus In-Person Health Education: Feasibility, Satisfaction, and Health Literacy for Diverse Older Adults

OBJECTIVES

Health education may improve health in geriatric patients. To evaluate differences between remote and in-person education, the DREAMS (Developing a Research Participation Enhancement and Advocacy Training Program for Diverse Seniors) health seminar series compared in-person and remote learning groups to assess feasibility, satisfaction, adherence, health literacy, and cognitive outcomes.

RESEARCH DESIGN

Nonrandomized two-arm interventions occurred remotely or in-person. About 130 diverse, older adults (M age: 70.8 ± 9.2 years; in-person n = 95; remote, n = 35) enrolled. Data from 115 completers (In-person n = 80; Remote n = 35) were analyzed for performance outcomes. Feasibility, adherence, and satisfaction benchmarks were evaluated at baseline, immediately post intervention, and 8 weeks post intervention. Adjusting for baseline performances, outcomes on health literacy and cognitive measures were compared between groups after intervention (at posttest and at 8-week follow-up) using adjusted mean differences (β coefficients).

RESULTS

Eighty in-person and all remote participants completed at least six modules. Both programs had high satisfaction, feasibility, and strong adherence. After adjusting for demographic covariates and baseline values, cognitive and motor cognitive measures between groups were domain specific (e.g., global cognition, executive function, spatial memory, mental tracking capacity, and cognitive integration).

DISCUSSION AND IMPLICATIONS

This work explores feasible measures of knowledge acquisition and its link to health literacy and cognitive outcomes. Identifying effective delivery methods may increase involvement in clinical research. Future studies may encourage remote learning for increased accessibility.

Association of Frailty Status with Risk of Fall among Hospitalized Elderly Patients: A Cross-Sectional Study in an Acute Geriatric Unit

Introduction: The objective was to study the association of frailty status in hospitalized elderly patients with risk of fall in an acute geriatric unit and to characterize elderly “fallers” using a comprehensive gerontological assessment. Patients and Methods: A cross-sectional study was conducted in patients over 65 years of age and hospitalized in an acute geriatric unit. This work was carried out in the Acute Geriatric Medicine Unit, Saint-Julien Hospital, Center Hospitalier Universitaire de Rouen from 1 June 2016 to 15 August 2016. Results: 172 patients were included during the collection period, with a female predominance of 115 patients (66.9%). The average age of the sample was 79.37 years old (65−85). The average CHARLSON score was 6.93 (3−16). Patients came from home in 81.4% of cases (i.e., 140 patients), and from a nursing home in 18.6% of cases (i.e., 32 patients). The risk of falling, as assessed by the Monopodal Support Test, returned as abnormal for 127 patients. In our series, there was a statistically strong link between the risk of falling and the presence of a dementia pathology (p = 0.009), the presence of a vitamin D deficiency (p = 0.03), the presence of frailty, as assessed by the three scales (modified SEGA scale, Fried scale and CFS/7 (<0.001), a high comorbidity score (p = 0.04), and a disturbed autonomy assessment according to IADL (p = 1.02 × 10−5) and according to ADL (p = 6.4 × 10−8). There was a statistically strong link between the risk of falling and the occurrence of death (p = 0.01). Conclusion: The consequences of the fall in terms of morbidity and mortality and the frequency of this event with advancing age and its impact on the quality of life as well as on health expenditure justify a systematic identification of the risk of falling in the elderly population. It is therefore important to have sensitive, specific, and reproducible tools available for identifying elderly people at high risk of falling.

Association between Domains of the Clinical-Functional Vulnerability Index and Falls History in Older Adults: A Cross-Sectional Study

Objectives: The study aimed to determine which domains, sets, and isolated or combined questions of the Clinical-Functional Vulnerability Index (CFVI-20) are associated with falls history in older adults. Methods: Instruments used were the CFVI-20 assessment and reported falls during the last year. The receiver operating characteristics (ROC) curves identified the performance of the CFVI-20 domains and questions in identifying older adults with and without falls history, while logistic regression identified relevant questions to identify fall history. Results: This study included 1725 individuals (71.9 ± 7.3 years). The area under the curve (AUC) between the CFVI-20 and fall history was 0.69. The mobility domain presented the largest AUC (0.71; p < 0.01), and most isolated domains showed low AUCs (0.51 to 0.58). Isolated questions were limited to identifying fallers. The regression analysis identified 7 questions of the CFVI-20 with falls. Conclusions: The CFVI-20 general score identified older adults with a fall history. When considered in isolation, most domains were limited to identifying falls, except for the mobility domain. Combining the CFVI-20 questions enabled identification of fallers.

Frailty Syndrome-Fall Risk and Rehabilitation Management Aided by Virtual Reality (VR) Technology Solutions: A Narrative Review of the Current Literature

Frailty, a physiological syndrome (FS) affecting primarily the older adults, manifests itself through significantly depleted bodily reserves, and appreciably higher (up to over threefold) individual exposure to fall risk. Concomitant medical conditions such as balance impairment, reduced visual acuity, limited mobility, and significantly diminished daily functional performance further exacerbate the patients' condition. Their resultant susceptibility to frequent hospitalisations makes their prognosis even worse. This narrative review aimed to provide an overview of published studies focused on rehabilitation management approaches aided by virtual reality (VR) technology in frail older adults. The authors had it also augmented with their own, evidence-based body of experience in rehabilitation. Making use of technologically advanced exercise machinery, specially adapted for rehabilitating frail older adults, combined with a structured exercise regimen, further aided by the application of select virtual reality (VR) technology solutions, clearly proved effective. Consequently, the patients were helped to move back from the frail to the pre-frail stage, as well as had their motor and cognitive functions appreciably enhanced. The application of modern technology in rehabilitating older adults over 65, affected by FS, when specifically aided by the select VR technology solutions, was also proven to complement successfully the conventional rehabilitation management. The overall versatility of the VR technology solutions, e.g., adaptation for home use allowing remote supervision, also makes this novel approach to rehabilitation far more appealing to the patients. They find it both very attractive and far more mentally engaging. Its considerable potential lies mostly in being appreciably more effective in bringing in desirable therapeutic outcomes.

Does dual-tasking provide additional value in timed "up and go" test for predicting the occurrence of falls? A longitudinal observation study by age group (young-older or old-older adults)

BACKGROUND

Previous studies using relatively large samples and longitudinal observational designs reported dual-tasking had additional value in timed "up and go" test (TUG) for falls assessment among well-functioning older adults.

AIM

To elucidate the additional value of dual-tasking in TUG for predicting the occurrence of falls among community-dwelling older adults by age group using a predictive model.

METHODS

This longitudinal observation study included 987 community-dwelling older adults at baseline. A TUG without performing another task (single-TUG) and a TUG while counting aloud backward from 100 were conducted at baseline. We computed the dual-task cost (DTC) value, which is used to quantify trends in subjects' execution of motor tests under dual-task conditions. Data on fall history were obtained using a self-administered questionnaire at the 1-year follow-up. The final analysis included 649 individuals divided into a young-older adult group (aged 60-74 years) and an old-older adult group (aged ≥ 75 years). Associations between the occurrence of falls and TUG-related values were analyzed by age group using multivariate logistic regression models.

RESULTS

For old-older adults, there were significant associations between the occurrence of falls and single-TUG time (odds ratio [OR] 1.143, 95% confidence interval [CI] 1.018-1.285) and DTC value (OR 0.981, 95% CI 0.963-0.999). No significant associations were observed for young-older adults.

CONCLUSIONS

Slower single-TUG time and lower DTC value are associated with the occurrence of falls among old-older adults but not among young-older adults. Dual tasking may provide an additional value in TUG for predicting falls among old-older adults.

Quantitative falls risk assessment in elderly people: results from a clinical study with distance based timed up-and-go test recordings

OBJECTIVE

A third of people over 65 years experiences at least one fall a year. The Timed Up-and-Go (TUG) test is commonly used to assess gait and balance and to evaluate an individual's risk of falling.

APPROACH

We conducted a clinical study with 46 older participants for evaluating the fall risk assessment capabilities of an ultra-sound based TUG test device. The fall protocols over a period of one year were used to classify participants as fallers and non-fallers. For frailty evaluation, state-of-the-art questionnaires were used. Fall recordings were compared to six TUG test measurements that were recorded in fallers and non-fallers.

MAIN RESULTS

TUG test data were available for 39 participants (36 f, age 84.2 ± 8.2, BMI 26.0 ± 5.1). Twenty-three participants did fall at least once within the fall screening period. We fitted two different regression and probability models into a region of interest of the distance over time curve as derived from the TUG device. We found that the coefficient of determination for Gaussian bell-shaped curves (p < 0.05, AUC = 0.71) and linear regression lines (p < 0.02, AUC = 0.74) significantly separated fallers from non-fallers. Subtasks of the TUG test like the sit-up time showed near significance (p < 0.07, AUC = 0.67).

SIGNIFICANCE

We found that specific features calculated from the TUG distance over time curve were significantly different between fallers and non-fallers in our study population. Automatic recording and analysis of TUG measurements could, therefore, reduce time of measurements and improve precision as compared to other methods currently being used in the assessments of fall risk.

Self-reported fatigue: A significant risk factor for falling in older women and men

OBJECTIVE

To determine whether fatigue may be a risk factor for falling in older men and women, independent of other components of the frailty phenotype, fear of falling, and physical performance.

DESIGN

Among 986 women and 485 men visiting a health resort (mean age 72.3 and 72.7, respectively), subjects with at least one fall in the previous year were compared with non-fallers using a multivariate logistic regression analysis. Age, fatigue and fear of falling over the previous month were assessed by visual analogue scale (VAS), and the past 7 days of activity were assessed using the International Physical Activity Questionnaire. The following parameters were also assessed: weight loss in the past year, maximum grip strength measured with a hand dynamometer, time to perform the 5-chair stand and the up and go tests, time to walk 4 m, time held on one leg, feet together, as well as in the semi-tandem and tandem positions.

RESULTS

A feeling of fatigue (VAS score ≥ 5/10 in women or ≥4/10 in men), a fear of falling (VAS score ≥ 4/10 in women or ≥2 in men), and poor balance (time held in semi-tandem position < 10 s in women and time held on one leg < 6.5 s in men) were the 3 independent parameters distinguishing fallers from non-fallers.

CONCLUSION

The present study suggests the interest of adding a VAS score of fatigue to that of fear of falling and balance measurements for screening men and women aged 65 or older who are at risk of falls.

Subtask Segmentation of Timed Up and Go Test for Mobility Assessment of Perioperative Total Knee Arthroplasty

Total knee arthroplasty (TKA) is one of the most common treatments for people with severe knee osteoarthritis (OA). The accuracy of outcome measurements and quantitative assessments for perioperative TKA is an important issue in clinical practice. Timed up and go (TUG) tests have been validated to measure basic mobility and balance capabilities. A TUG test contains a series of subtasks, including sit-to-stand, walking-out, turning, walking-in, turning around, and stand-to-sit tasks. Detailed information about subtasks is essential to aid clinical professionals and physiotherapists in making assessment decisions. The main objective of this study is to design and develop a subtask segmentation approach using machine-learning models and knowledge-based postprocessing during the TUG test for perioperative TKA. The experiment recruited 26 patients with severe knee OA (11 patients with bilateral TKA planned and 15 patients with unilateral TKA planned). A series of signal-processing mechanisms and pattern recognition approaches involving machine learning-based multi-classifiers, fragmentation modification and subtask inference are designed and developed to tackle technical challenges in typical classification algorithms, including motion variability, fragmentation and ambiguity. The experimental results reveal that the accuracy of the proposed subtask segmentation approach using the AdaBoost technique with a window size of 128 samples is 92%, which is an improvement of at least 15% compared to that of the typical subtask segmentation approach using machine-learning models only.

Cognitive and motor performances in dual task in patients with chronic obstructive pulmonary disease: a comparative study

BACKGROUND

Patients with chronic obstructive pulmonary disease (COPD) may display a motor and/or cognitive disadvantage during dual tasking. However, studies investigating dual task are quite limited in patients with COPD.

AIMS

To compare cognitive and motor performances (i.e., muscle force production and functional balance/mobility together with a cognitive task) in dual task between patients with COPD and healthy controls.

METHODS

Thirty-five clinically stable patients with COPD and 27 age- and sex-matched healthy controls participated in this cross-sectional controlled study. The muscle force production (knee extension muscle strength assessed with an isokinetic strength dynamometer) and functional balance/mobility (Timed Up and Go (TUG) test) were performed with and without a cognitive task. Dual-task interference (DTI) was assessed. Additionally, the rate of correct responses per second (RCR) was calculated to evaluate cognitive performance.

RESULTS

The decrease in RCR_{muscle force production} values was greater in the COPD group compared with the control group (p = 0.045). Similarly, the cognitive DTI in muscle force production test was higher in the control group than in the COPD group (p < 0.001). There was no significant difference in other outcome measures between the two groups (p > 0.05).

CONCLUSION

The study results indicate that in individuals with COPD, cognitive performance deteriorations are more pronounced than motor performance defects during dual tasking. Further studies are needed to investigate the effects of dual task taking into account this disadvantage in patients with COPD rather than focusing solely on motor performance.

Physical Frailty and Fall Risk in Community-Dwelling Older Adults: A Cross-Sectional Study

Introduction

Frailty is a condition in older adults with decreased physical and cognitive performance that can affect health outcomes associated with fracture, disability, and falls. The aim of this study was to compare fall risk with different physical frailty statuses and investigate factors associated with fall risk in community-dwelling older adults.

Methods

The population studied included 367 older adults (mean age = 73.2 years ± 7.0; 237 females (64.6%) and 130 males (35.4%)) who live in Chiang Mai, Thailand. This study was of cross-sectional design. Fried's phenotype was used to screen the physical frailty status. The physiological profile assessment (PPA) was used to screen for fall risk. One-way ANOVA analysis was used to compare the fall risk between the different levels of frailty status. Linear regression analysis was used to assess the association between frailty status and fall risk.

Results

The prevalence of the frailty group was 8.7% and that of the prefrailty group was 76.8%. The three statuses of frailty identified were found to have different levels of risk of falling. The frailty group had a higher fall risk than the nonfrailty group and the prefrailty group. In addition, the nonfrailty group had a lower fall risk than the prefrailty group.

Conclusion

The frailty group had the highest fall risk in this cohort of older adults living in a community-dwelling facility. Therefore, it is important to assess the frailty status among older adults as it can be a predictor for fall risk. This assessment will therefore lead to a reduction in the rate of disability and death in the community.

Gait analysis of patients with distal radius fracture by using a novel laser Timed Up-and-Go system

BACKGROUND

Postmenopausal women are at risk of fall and fracture with the physical decline. Distal radius fracture (DRF) is considered as the primary fragility fracture, and women with this fracture showed poor results in the usual Timed Up-and-Go (TUG) test, indicating a decline in balance and physical ability. The detailed physical characteristics of female DRF patients have not been extensively examined.

RESEARCH QUESTION

Is the novel laser TUG system able to detect and analyze the detailed gait characteristics in patients with DRF whose physical ability has tended to decline?

METHODS

In this cross-sectional case control study, the gait characteristics of 32 female patients　with DRF who had undergone surgery were evaluated at 2 weeks postoperatively with a　laser TUG system to analyze the detailed leg motion during normal TUG test.　Forty-three age- and sex-matched non-fractured women were evaluated by the laser TUG system as controls. Lifestyle and present illness were corrected at the time of TUG measurement. Detailed data during laser TUG in both groups were compared statistically, and odds ratio and thread shod of the fracture was elucidated through a　logistic regression analysis.

RESULTS

DRF patients showed slower speed and had to do more steps to complete the TUG test. Furthermore, asymmetric trajectory and significantly further distance from the marker were observed. Thirteen steps to complete the TUG test was the thread shod of DRF.

SIGNIFICANCE

Detailed gait characteristics of patients with DRF were detected by the laser TUG system. The gait decline and abnormality could be one of the reasons of consecutive fragility fracture. To prevent secondary fragility fractures, this system can be useful for screening.

Correlation of functional mobility with handgrip strength, functional capacity for instrumental activities of daily living, fear of falling and number of falls in community-dwelling elderly

Abstract Introduction: Functional mobility is essential for quality life and its worsening is the first sign of functional decline in the elderly. Objective: To assess the correlation of functional mobility with handgrip strength (HGS), functional capacity for IADL (FC-IADL) and fear of falling and number of falls in community-dwelling elderly. Method: A cross-sectional study was conducted with 303 community-dwelling elderly of both sexes, in Juiz de Fora (MG, Brazil). Functional mobility (TUG), HGS (dynamometer, JAMAR), FC-IADL (Lawton and Brody Scale), fear of falling (FES-I-Brazil) and number of falls were assessed. The data were analyzed using Pearson’s correlation test, and significance was established at ≤ 5%. Results: The elderly studied consisted of 61.7% females, were 73.5 ± 7.8 years old and had little schooling (4.3 ± 3.5 years). Functional mobility showed a moderate correlation with HGS (r = -0.383 and r = -0.322; women and men respectively) and FC-IADL (r = -0.568 and r = -0.583) in both sexes and fear of falling (r = 0.511) in females, a weak correlation with fear of falling in males (r = 0.243) and number of falls in both sexes (r = 0.101 and r = 0.195). Conclusion: Functional mobility showed a moderate correlation with HGS and FC-IADL in both sexes and fear of falling in females. It showed a weak correlation with fear of falling in males and number of falls in both sexes. The overestimated self-efficacy to prevent falls in men and the protective role of fear of falling in individuals with functional mobility limitations may explain these findings.

Occupational therapist use of the 'Timed Up and Go' test in a Memory Clinic to compare performance between cognitive diagnoses and screen for falls risk

INTRODUCTION

Occupational therapists assess older patients attending Memory Clinics to address multiple facets, including memory, activities of daily living function, mobility and falls risk. Identifying deficits in motor and functional abilities represents a crucial and necessary component of cognitive diagnosis. The aim of this research was to compare performance on the TUG between patients with normal (NC), mild cognitive impairment (MCI) and dementia.

METHODS

A prospective single-blind single-centre cohort study was conducted in a Memory Clinic. Patients underwent comprehensive medical assessment, including the Mini Mental Status Examination (MMSE) to determine a cognitive diagnosis. The occupational therapist, blinded to any diagnosis, completed the TUG.

RESULTS

A total of 158 patients aged 60 years and older were recruited. The average TUG was 15.4 s, which was similar between men and women (p = .87). A TUG greater than ≥14 s was significantly associated with the use of a walking aid (p ≤ .001). The TUG increased with age and a slower TUG was associated with a greater number of previous falls (p = .023). The TUG did not significantly differ between patients with dementia, MCI and NC (p = .095). However, there was a significant difference comparing patients with NC and MCI (14.3 s) to those with dementia (16.4 s) (p = .048). There was a significant weak negative correlation between the MMSE and the TUG of -0.253 (p = .003). Univariate models showed that a patient's ability to ambulate independently contributed to 33% of the variance in the TUG, whereas previous falls contributed to 4%, highlighting the importance of physical function and intervention to target this.

CONCLUSION

A simple TUG test should be considered for use by occupational therapists in a Memory Clinic to screen patients at risk of falling. Patients diagnosed with dementia have a significantly slower TUG. However, this tool cannot assist with the early detection of patients with MCI.

Associations between Frailty and Delirium among Older Patients Admitted to an Emergency Department

BACKGROUND

Switzerland's demographic trends show, as elsewhere on the planet, increasing numbers of older and very old adults. This suggests that its healthcare system will suffer serious repercussions, including in the use of care and especially the use of emergency services. Significant numbers of older adults will be at risk of developing multiple chronic conditions including one or more geriatric syndromes, such as frailty and delirium. Few studies to date have documented associations between frailty and delirium.

AIM

To explore the relationships between frailty and delirium in older adult patients consulting (n = 114) at an emergency department (ED) in Switzerland.

METHOD

A cross-sectional study was conducted in a peripheral hospital ED in the French-speaking part of Switzerland. Frailty was assessed using the Tilburg Frailty Indicator (TFI). Delirium was assessed using the Confusion Assessment Method (CAM). Participants' cognitive states were assessed using the 6-item Cognitive Impairment Test (6CIT) and the Informant Questionnaire on Cognitive Decline in the Elderly (IQ-CODE), completed by the participant's most significant informal caregiver.

RESULTS

The mean participant age was 77.6 years (SD = 7.7); the majority of the subjects were women (54%). The participants took an average of 4.7 different medications a day (SD = 3.2, median = 4). More than half (62%) of the participants were frail; 2 and 14% presented signs and symptoms of delirium and subsyndromal delirium, respectively. A weak but significant association between scores for frailty and delirium (p < 0.05) was demonstrated, and clinical observation confirmed this. A 4-h follow-up measurement of delirium in the ED revealed no significant or clinical difference.

CONCLUSION

Although the literature describes strong associations between frailty and delirium in surgical units and community care settings, the present study only demonstrated a weak-to-moderate association between frailty and delirium in our ED.

Dynamic balance and instrumented gait variables are independent predictors of falls following stroke

BACKGROUND

Falls are common following stroke and are frequently related to deficits in balance and mobility. This study aimed to investigate the predictive strength of gait and balance variables for evaluating post-stroke falls risk over 12 months following rehabilitation discharge.

METHODS

A prospective cohort study was undertaken in inpatient rehabilitation centres based in Australia and Singapore. A consecutive sample of 81 individuals (mean age 63 years; median 24 days post stroke) were assessed within one week prior to discharge. In addition to comfortable gait speed over six metres (6mWT), a depth-sensing camera (Kinect) was used to obtain fast-paced gait speed, stride length, cadence, step width, step length asymmetry, gait speed variability, and mediolateral and vertical pelvic displacement. Balance variables were the step test, timed up and go (TUG), dual-task TUG, and Wii Balance Board-derived centre of pressure velocity during static standing. Falls data were collected using monthly calendars.

RESULTS

Over 12 months, 28% of individuals fell at least once. The faller group had increased TUG time and reduced stride length, gait speed variability, mediolateral and vertical pelvic displacement, and step test scores (P < 0.001-0.048). Significant predictors, when adjusted for country, prior falls and assistance (i.e., physical assistance and/or gait aid use) were stride length, step length asymmetry, mediolateral pelvic displacement, step test and TUG scores (P < 0.040; IQR-odds ratio(OR) = 1.37-7.85). With comfortable gait speed as an additional covariate, to determine the additive benefit over standard clinical assessment, only mediolateral pelvic displacement, TUG and step test scores remained significant (P = 0.001-0.018; IQR-OR = 5.28-10.29).

CONCLUSIONS

Reduced displacement of the pelvis in the mediolateral direction during walking was the strongest predictor of post-stroke falls compared with other gait variables. Dynamic balance measures, such as the TUG and step test, may better predict falls than gait speed or static balance measures.