Role of the upper limb in limiting head impact during laboratory-induced falls in at fall-risk older adults.

BACKGROUND: Fall-related head impact is the leading cause of traumatic brain injury in older adults. There is limited understanding of factors related to fall-related head impact. This investigation examined characteristics of upper limb movements during standing-height falls and examined their association with fall-related head impact in older adults at risk for falls. METHODS: Older adults (n=29) at risk for fall-related injuries underwent experimentally induced falls in multiple directions (backwards and sideways). To characterize the upper limb movements and their association with head impact, a standardized analysis tool was used to analyze a total of 164 video-recorded falls. The association between upper limb movements (and their characteristics) and head impact was analyzed through logistic regression. RESULTS: Nearly 80% of falls involved upper limb movements. Absence of upper limb movements significantly increased head impact odds by approximately 4-fold. The odds of head impact were reduced in falls with energy absorption at the forearm (0.013-fold) and upper arm (0.018-fold), compared to falls without upper limb energy absorption. Backwards falls showed significantly higher odds of head impact (more than 4-fold). CONCLUSION: Upper limb movements are common during fall descent and are associated with lower odds of experiencing head impact. Energy absorption with the upper limb seems to be an important protective mechanism. Future work should explore if these movements can be augmented with targeted training.

Views and experiences of older people taking part in a safe-falling training program: Lessons learned from the FAlling Safely Training (FAST) trial.

BACKGROUND: While falls are the leading cause of accidental injury among older people, the current fall prevention strategies have not resulted in a remarkable reduction in fall rates. An alternative novel approach, teaching older adults how to fall safely to prevent injury, has been recently implemented in the FAlling Safely Training (FAST) trial. The current study aimed to explore the views and perceptions of older people about their participation in the safe-falling training program. METHODS: Focus groups were conducted with eight community-dwelling older adults (age range: 66 to 76 years, five females) at risk of falling who completed the FAST program. Two focus groups involving four participants each were conducted. Recordings were transcribed verbatim and analyzed using thematic analysis. RESULTS: Three themes were identified following the analysis: (1) Before the training; with subthemes: Previous fall prevention strategies and Motivation to participate. Motivations to take part in the training included worries about falling, an awareness of an increased risk of falling, and a desire to decrease the chances of sustaining an injury. (2) Training itself; with subthemes: General impressions of the training and Learning the techniques. Older people highlighted that the training was well-designed and executed. (3) Going forward; with subthemes: Training increased confidence, Incorporating in a community setting, and Proposing improvements to the study. It was reported that the training enhanced participants' confidence about falling without injury. Incorporating the training into a community context was discussed, and suggestions for program enhancements were made. The individual nature of the training was valued, but participants also provided suggestions for how they would see the program taking place successfully in small groups. CONCLUSIONS: The results indicated that the safe-falling training was acceptable to older adults. The perceived ability to fall without injury was reported to have increased. Individuals who experienced a fall after the training ended reported being able to use the techniques learned in their daily life. The findings have implications for the training to be refined and implemented in the community. TRIAL REGISTRATION: The article is linked to a randomized controlled trial registered at http://ClinicalTrials.gov (NCT05260034).

Engaging wheelchair and scooter users in the co-design of an mHealth application for fall prevention and management: thematic analysis of focus group research.

This study aimed to explore the potential of a mobile health (mHealth) application (app) to support the delivery of a fall prevention and management program, Individualized Reduction of FaLLs (iROLL), for people with spinal cord injury (SCI) and multiple sclerosis (MS) who use wheelchairs and scooters (WC/S) full-time by seeking end-users' input into the functioning and ongoing design of the iROLL-O + mobile app. Two focus group discussions included nine adults with SCI or MS who used a WC/S for at least 75% of mobility, who experienced at least one fall in the past three years and have internet and access to an internet-capable device. One group had prior iROLL experience (n = 4); while the other had none (n = 5). The focus groups examined the app's usefulness, accessibility, appearance, and ease of use. The participants with prior iROLL experience also discussed how the app would enhance their experience with the program. Thematic analysis revealed five app-related themes: perceived usefulness, perceived usability, accessibility, appearance, and enhancement of the iROLL experience, with participants providing actionable suggestions for improvement. Participants with previous exposure to the iROLL program emphasized the app's potential to facilitate flexible access to the program and expand its reach to a wider audience. The iROLL-O + app was perceived positively, especially with respect to the enhancement of users' access and experience with the program. Focus group findings will inform ongoing app development for optimized usability and reduced likelihood of technology abandonment.IMPLICATIONS FOR REHABILITATIONEnd-users' impressions of the Individual Reduction of faLLs Online application (iROLL-O + app) highlight the potential for integrating mHealth apps in fall prevention and management education efforts, offering a promising and accessible avenue to support the delivery of tailored programs.The study notes that the app facilitates flexible access and wider reach to the program, indicating the importance of incorporating features that enhance accessibility and accommodate the diverse needs of individuals who use wheelchairs and scooters.Actionable suggestions provided by participants underscore the importance of a user-centered design approach in developing rehabilitation-related mobile apps.

Effects of a 6-Week Treadmill Training With and Without Virtual Reality on Frailty in People With Multiple Sclerosis.

OBJECTIVE: To examine the effects of a cognitive-motor rehabilitation program consisting of treadmill training (TT) augmented by virtual reality (TT+VR) on frailty in people with multiple sclerosis (pwMS). DESIGN: Secondary analysis from a multicenter randomized controlled trial investigating the effects of TT+VR, compared with TT only, on measures of mobility and cognitive function in pwMS. SETTING: Four university research laboratories in 3 countries. PARTICIPANTS: A total of 124 pwMS were randomized into the parent trial. Here, we studied a subset of n = 83 participants (mean age, 49.4±9.3y; 73.5% female; expanded disability status scale range, 2.0-6.0), who completed the intervention and had complete preintervention and postintervention frailty data. INTERVENTIONS: Participants were randomly allocated to TT+VR (n=44) or TT (n=39). Both groups trained 3 times a week for 6 weeks. MAIN OUTCOME MEASURES: Frailty was assessed using a 40-item frailty index (FI) through standard validated procedures and represented the primary study outcome. Two exploratory frailty indices were also computed by isolating health-related deficits involving the cognitive (FI-physical) or physical (FI-cognitive) domains from the main FI. The assessments were performed at baseline and after 6 weeks, upon intervention completion. RESULTS: The mean FI of study participants at baseline was 0.33±0.13, indicating a moderate average level of frailty. FI scores improved in both TT+VR and TT groups participants (pooled mean ΔFI, 0.024; 95% CI, 0.010-0.038; F=10.49; P=.002; ηp2=0.115), without any group-by-time interaction (F=0.82; P=.367; ηp2=0.010). However, a significant group-by-time interaction was found for pretraining and posttraining changes in FI-cognitive (F=5.74; P=.019; ηp2=0.066), suggesting a greater improvement for TT+VR group participants than for TT group participants. CONCLUSIONS: TT with or without virtual reality can reduce frailty levels in pwMS. While both TT and TT+VR had a positive effect on overall frailty, only TT+VR improved cognitive aspects of frailty and may represent an appropriate strategy for counteracting frailty in pwMS.

mHealth learning strategies to support behaviour change in individuals using wheelchairs and/or scooters: a systematic review.

PURPOSE: The purpose of this systematic review of the literature is to build understanding of the key elements and recommendations for the design of mHealth technology for individuals using wheelchairs and/or scooters and identify key features associated with the use of mHealth to support healthy behaviour changes for this population. MATERIALS AND METHODS: Eight major electronic databases were systematically searched to identify mobile health (mHealth) interventions, which targeted adult WC/S users. Independent reviewers used Endnote and Covidence to manage articles meeting review criteria and to exclude duplicates. A quality assessment was conducted on each included article. RESULTS: Nine articles describing studies with diverse study designs met criteria to be included in this review. Several interactive application intervention features, such as participant collaboration and goal setting, and key technical features to support mHealth app development and utilisation were identified. Results found intuitive and simple designs of mHealth apps, with the ability to customise to support learning styles and preferences, support usability and acceptability by participants. CONCLUSIONS: More research is needed to evaluate best practices to support initial training of end-users, mHealth apps' ability to support long-term behaviour change and maintenance, and the understanding of active ingredients in complex interventions that include mHealth apps. Both interactive mHealth application intervention and technical features support healthy behaviour change among individuals using wheelchairs and scooters.

Utilizing evidence to develop mHealth applications (apps) support best practices, participant satisfaction, and usability.mHealth apps are feasible to support health behavior change for wheelchair and/or scooter users, with considerations for customization to support diverse learning preferences and needs.Active learning strategies (e.g., goal setting, self-assessment, collaborative learning), within or in conjunction with the app, support behavior change.

Examining the validity of smart glasses in measuring spatiotemporal parameters of gait among people with Parkinson's disease.

BACKGROUND: Gait impairment is an early marker of Parkinson's disease (PD) and is frequently monitored to evaluate disease progression. Wearable sensors are increasingly being used to quantify gait in the real-world setting among people with PD (pwPD). Particularly, embedding wearables on devices or clothing that are worn daily may represent a useful strategy to improve compliance and regular monitoring of gait. RESEARCH QUESTION: The current investigation examined the validity of innovative smart glasses to measure gait among pwPD. METHODS: Participants wore the smart glasses and 6 APDM gait sensors simultaneously, while performing two walking tasks: the 3-meters Timed Up and Go test (TUG) and the 7-meters Stand and Walk (SAW) test. The following spatiotemporal gait parameters were calculated from the data collected using the two different devices: step time, step length, swing percentage, TUG duration, turn duration, and turn velocity. RESULTS: A total of 31 pwPD (mean age=68.6±8.5 years; 35.48 % female(N=11), mean Unified Parkinson's Disease Rating Scale (UPDRS) total score=32.1±14.7) participated in the study. Smart glasses achieved high validity in measuring step time (ICC=0.92, p=0.01) and TUG duration (ICC=0.96, p=0.03) compared to APDM sensors. On the other hand, the smart glasses did not achieve adequate validity when measuring step length, swing percentage, turn duration or turn velocity. SIGNIFICANCE: The current study suggests that smart glasses has the potential to measure TUG and step time in individuals living with PD. However, further research is needed to improve algorithms for sensors worn on the head.

Mental health and frailty in people with multiple sclerosis: unraveling a complex relationship.

People with multiple sclerosis (MS) have up to a 15 times higher risk of being frail compared to age-matched individuals without MS. Frailty is a biological syndrome of decreased physiological reserve and resilience that increases the vulnerability to adverse clinical outcomes and leads to a lower quality of life. Recent studies have begun investigating frailty in the context of MS, highlighting several associations between frailty and adverse events, such as falls, and common MS-related symptoms involving the physical health domain, such as walking and sleeping problems. However, there is a critical knowledge gap regarding the relationship between mental health and frailty in people with MS. This mini-review article aimed to shed light on the potential relationships between MS, frailty, and mental health. Despite the dearth of studies on this topic, indirect evidence strongly suggests that the association between frailty and mental health in people with MS is likely bidirectional in nature. Specifically, mental health disorders such as depression and anxiety may be involved in the etiology of frailty in people with MS. However, they could also be exacerbated by the detrimental effects of frailty on overall health. The complex relationship between frailty and mental health in MS underscores the multifaceted challenges people with MS face. Conducting further research to untangle such a relationship is critical to developing early detection and intervention strategies for improving well-being and medical outcomes in people with MS.

Multimodal exercise training to reduce frailty in people with multiple sclerosis: study protocol for a pilot randomized controlled trial.

BACKGROUND: Frailty, a syndrome characterized by decreased reserve and resistance to stressors across multiple physiologic systems, is highly prevalent in people living with multiple sclerosis (pwMS), independent of age or disability level. Frailty in MS is strongly associated with adverse clinical outcomes, such as falls, and may aggravate MS-related symptoms. Consequently, there is a pressing necessity to explore and evaluate strategies to reduce frailty levels in pwMS. The purpose of this pilot randomized controlled trial (RCT) will be to examine the feasibility and preliminary efficacy of a multimodal exercise training program to reduce frailty in pwMS. METHODS: A total of 24 participants will be randomly assigned to 6 weeks of multimodal exercise or to a waitlist control group with a 1:1 allocation. PwMS aged 40-65 years and living with frailty will be eligible. The multimodal exercise program will consist of cognitive-motor rehabilitation (i.e., virtual reality treadmill training) combined with progressive, evidence-based resistance training. At baseline and post-intervention, participants will complete the Evaluative Frailty Index for Physical Activity (EFIP), measures of fall risk, and quality of life. Frailty-related biomarkers will also be assessed. In addition, the feasibility of the multimodal exercise program will be systematically and multidimensionally evaluated. DISCUSSION: To date, no RCT has yet been conducted to evaluate whether targeted exercise interventions can minimize frailty in MS. The current study will provide novel data on the feasibility and preliminary efficacy of multimodal exercise training as a strategy for counteracting frailty in pwMS. TRIAL REGISTRATION: ClinicalTrials.gov, NCT06042244 (registered in September 2023).

Characteristics and Consequences of Falls in People Who Use Wheelchairs in Long-Term Care Settings.

OBJECTIVES: The purpose of this study was to understand the characteristics and consequences of falls in individuals using wheelchairs in long-term care settings. DESIGN: Observational analysis of real-world falls in long-term care. SETTING AND PARTICIPANTS: Residents using wheelchairs from 2 long-term care facilities in British Columbia, Canada (n = 32 participants, mean age = 84.7 years, 12 women). METHODS: Two raters used the validated Falls Video Analysis Questionnaire, adapted from the original version, to assess the causal, behavioral, and environmental aspects of falls from wheelchairs. RESULTS: A total of 58 wheelchair fall videos were identified out of 300 total videos that were collected from 2007 to 2014. Wheelchair falls were most often caused by incorrect transfer or shift of body weight (70.7%). Participants most often fell backward with 89.7% striking their pelvis. Individuals using wheelchairs had limited protective response, with only 10.3% demonstrating a step response. Improper brake position contributed to 67.2% of falls. No serious fall-related injuries were reported. CONCLUSIONS AND IMPLICATIONS: The findings highlight the unique nature of falls in older adults who use wheelchairs in long-term care settings. Overall, the results of this study support clinical practice and the critical need for developing specialized fall prevention and fall detection interventions for individuals who use wheelchairs in long-term care.

Fear of falling and common symptoms of multiple sclerosis: Physical function, cognition, fatigue, depression, and sleep - A systematic review.

BACKGROUND: Fear of falling (FOF) is a common concern among persons with multiple sclerosis (MS) and affects the performance of their daily living activities. Falls may result in FOF, leading to worsening of symptoms of MS, physical deconditioning, and exposure to future falls. This may trigger a vicious cycle between FOF and falls. A better understanding of the relationship between FOF and symptoms of MS may be helpful to develop a conceptual model to guide fall prevention interventions. OBJECTIVE: To synthesize the correlational and predictive relationships between FOF and common symptoms of MS. METHODS: Databases including PubMed, Embase, Web of Science, Scopus, CINHAL, PsycINFO, and SPORTDiscuss were searched from inception to October 2023. Studies examining correlations and/or predictions between FOF and common MS symptoms that include measures of gait, postural control, fatigue, cognition, pain, sleep, depression, and anxiety were identified by two independent reviewers. Both reviewers also conducted the methodological quality assessment of the included studies. RESULTS: Twenty-three studies with a total of 2819 participants were included in the review. Correlational findings indicated that increased FOF was significantly associated with greater walking deficits (lower gait speed, smaller steps), reduced mobility, and poorer balance. Increased FOF was also significantly correlated with higher cognitive impairments, more fatigue, sleep disturbances, and depression. Decreased gait parameters, reduced balance, lower physical functions, cognitive impairments, and sleep deficits were found as significant predictors of increased FOF. CONCLUSION: Evidence indicates significant correlational and bidirectional predictive relationships exist between FOF and common MS symptoms. A comprehensive conceptual framework accounting for the interaction between FOF and MS symptoms is needed to develop effective falls prevention strategies.

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.

Association between frailty and sleep quality in people living with multiple sclerosis and obesity: An observational cross-sectional study.

BACKGROUND: A majority of the people with multiple sclerosis (pwMS) experience sleep disturbances. Frailty is also common in pwMS. The geriatric literature strongly suggests that frailty is associated with worse sleep outcomes in community-dwelling older adults, but this association has yet to be explored among pwMS. This study focused on examining the association between frailty and sleep quality in pwMS. METHODS: Seventy-six people with both MS and obesity (mean age: 47.6 ± 10.9 years, 81.6 % female, mean body mass index (BMI): 37.10 ± 5.5 kg/m2, mean Patient Determined Disease Steps (PDDS): 0.82 ± 1.20) were included in this cross-sectional secondary analysis. A comprehensive frailty index (FI) based on 41 health deficits from various health domains was calculated based on standardized procedures. Sleep quality was determined by the Pittsburgh Sleep Quality Index questionnaire (PSQI). RESULTS: Overall, 67.1 % of the participants were identified as non-frail (FI ≤ 0.25), and 32.9 % were identified as frail (FI > 0.25). A significant correlation was observed between FI scores and global PSQI scores (ρ = 0.43, p < 0.05). Cross-tabulation analyses revealed that frail participants had worse subjective sleep quality, sleep latency, habitual sleep efficiency, sleep disturbances, daytime dysfunction, and higher use of sleep medications compared to non-frail participants (p < 0.05). CONCLUSIONS: The current study identified a significant association between frailty and sleep quality in people with both MS and obesity with minimal disability. These findings underscore the importance of untangling the relationship between frailty and sleep quality in pwMS. These results could lead to a more targeted approach for rehabilitation interventions aiming to improve frailty in MS.

Everyday Experiences of Physical Function and Awareness of Fall Risk in Older Adulthood.

Background and Objectives: Falls, the leading cause of death and disability among older adults, occur in daily life when the demands of daily activities surpass the ability to maintain balance. An estimated 30% of older adults misestimate their physical function, placing them at greater risk of falling. This study examined how experiences of physical function are linked to awareness of fall risk in daily life. Research Design and Methods: For 30 consecutive days following a fall-risk assessment, 41 older adults (observations = 1,135; 56% women; age: 65-91) self-assessed objective and subjective fall risk using a custom smartphone application. Alignment of objective and subjective fall risk was indexed as awareness of fall risk. Postural sway was measured by the application. Physical and mobility symptoms and fear of falling were reported daily. Results: At baseline, 49% of participants misestimated their fall risk. Awareness of fall risk varied from day to day and fall risk was misestimated on 40% of days. Multilevel multinomial models showed individual differences in the level of daily symptoms to increase the tendency to misestimate fall risk. Daily symptoms and fear of falling increased awareness of high fall risk, but daily symptoms threatened awareness of low fall risk. Discussion and Implications: Findings suggest that misestimation of fall risk is common in older adulthood and informed by appraisals of physical function. Fall prevention strategies could support older adults in understanding their everyday physical function and provide tools to adjust the demands of activities in daily life.

Association Between Frailty and Free-Living Walking Performance in People With Multiple Sclerosis.

OBJECTIVE: The purpose of this study was to examine the association between frailty and the quantity and quality of free-living walking and the mediating effect of frailty on the relationship between disability and walking performance in people with multiple sclerosis (MS). METHODS: Ninety-nine people with relapsing-remitting MS (mean age = 49.3 [SD = 9.8] years; 73.7% women; Expanded Disability Status Scale [EDSS] score range = 2.0-6.0) wore a triaxial accelerometer for 7 days. Recorded measures reflected the quantity (daily step counts, number of 30-second walking bouts, and signal vector magnitude [SVM]) and quality (gait speed, step cadence, step and stride regularity, and sample entropy) of walking. For each walking quality measure, the typical (median), best (90th percentile), and worst (10th percentile) values were calculated. Frailty was evaluated through a 38-item frailty index. RESULTS: Participants were classified as not frail (n = 31), moderately frail (n = 34), and severely frail (n = 34) on the basis of established procedures. Patients who were moderately and severely frail exhibited poorer performance in all measures of walking quantity and quality, except for sample entropy, than individuals who were not frail. No differences in free-living walking performance were observed between the moderately and severely frail groups. Frailty did not mediate the relationship between disability (EDSS) and measures of walking quality. Conversely, frailty had a significant mediating effect on the relationship between disability and measures of walking quantity, such as daily step counts (indirect effect: b = -220.42, 95% CI = -452.03 to -19.65) and SVM (indirect effect: b = -1.00, 95% CI = -1.86 to -0.30). CONCLUSION: Frailty is associated with poorer free-living walking performance in people with MS. The study findings suggest that frailty, rather than disability, may be primarily responsible for the lower amount of physical activity performed by people with MS in the real world. IMPACT: The observation that frailty and disability are differently related to measures of walking quality and quantity underscores the importance of a targeted approach to rehabilitation in people with MS.

Minimizing fall-related injuries in at-risk older adults: The falling safely training (FAST) study protocol.

Background: Falls are the leading cause of accidental injury among the elderly. Fall prevention is currently the main strategy to minimize fall-related injuries in at-risk older adults. However, the success of fall prevention programs in preventing accidental injury in elderly populations is inconsistent. An alternative novel approach to directly target fall-related injuries is teaching older adults movement patterns which reduce injury risk. The purpose of the current study will be to explore the feasibility and preliminary efficacy of teaching at-risk older adults safe-falling strategies to minimize the risk of injury. Methods/design: The Falling Safely Training (FAST) study will be a prospective, single-blinded randomized controlled trial. A total of 28 participants will be randomly assigned to four weeks of FAST or to an active control group with a 1:1 allocation. People aged ≥65 years, at-risk of injurious falls, and with normal hip bone density will be eligible. The FAST program will consist of a standardized progressive training of safe-falling movement strategies. The control group will consist of evidence-based balance training (modified Otago exercise program). Participants will undergo a series of experimentally induced falls in a laboratory setting at baseline, after the 4-week intervention, and three months after the intervention. Data on head and hip movement during the falls will be collected through motion capture. Discussion: The current study will provide data on the feasibility and preliminary efficacy of safe-falling training as a strategy to reduce fall impact and head motion, and potentially to reduce hip and head injuries in at-risk populations. Registration: The FAST study is registered at http://Clinicaltrials.gov (NCT05260034).

Characteristics and consequences of falls among people with multiple sclerosis who use wheelchairs or scooters: Differences between injurious and non-injurious falls.

BACKGROUND: Falls are common among people living with multiple sclerosis (MS) who use wheelchairs or scooters. Falls may lead to severe consequences including physical injuries. However, very little is known about the circumstances associated with injurious falls in this population. Therefore, we aimed to explore the differences in fall-related characteristics between injurious and non-injurious falls among people with MS who use wheelchairs or scooters. METHODS: A convenience sample of 48 people with MS (age = 62.0 [13.0] years, gender = 81.3% female, primary mobility aid = power wheelchair) completed a fall-history survey that examined the characteristics and consequences of their most recent fall. Participants also completed standard questionnaires on quality of life, community participation, and fear of falling. RESULTS: Most falls (85.4%) reported by participants occurred inside the house. Twelve (25.0%) participants reported experiencing fall-related injuries such as bruises, cuts, muscle strains, and fractures. People who reported being injured after a fall had a higher proportion of falls that occurred during transfers compared to those who were not injured (n = 10, 83.3% vs n = 17, 47.2%). Most participants (45.8%) did not receive any information from healthcare professionals on how to manage their fall-risk after their fall experience. No differences between injurious and non-injurious fallers in quality of life, community participation, and fear of falling were observed. CONCLUSIONS: This cross-sectional investigation provides compelling evidence that people with MS who use wheelchairs or scooters are at high risk of fall-related injuries. The study findings underscore the importance of increasing health care providers' awareness about the frequency and consequences of falls. Further, it demonstrates the critical need for evidence-based interventions specifically designed to minimize fall-related injuries in this vulnerable population.

Online Delivery of the Individualized Reduction of Falls Intervention for Persons With Multiple Sclerosis Who Use a Wheelchair or Scooter Full-time: A Pilot Study.

BACKGROUND: People with multiple sclerosis (MS) who use a wheelchair or scooter full-time fall frequently; however, fall prevention programming that meets the unique needs of this population is limited. This study examined the preliminary efficacy of a group-based online fall prevention and management intervention designed specifically for people with MS. METHODS: This pre/post intervention, mixed-methods study included people with MS who used a wheelchair or scooter full-time, experienced at least 1 fall within the past year, and transferred independently or with minimal or moderate assistance. Participants engaged in a 6-week, online, individualized, multicomponent fall prevention and management intervention: Individualized Reduction of Falls-Online (iROLL-O). RESULTS: No statistically significant change in fall incidence occurred after iROLL-O. However, fear of falling significantly decreased (P < .01) and knowledge related to fall management (P = .04) and fall prevention and management (P = .03) significantly improved. Qualitative results indicated that participants valued the opportunity for peer learning and iROLL-O's attention to diverse influences on fall risk. CONCLUSIONS: This study is the first to examine the preliminary efficacy of an online fall prevention and management intervention for people with MS who use a wheelchair or scooter full-time. iROLL-O has promise, and participants found it valuable. Further efforts are needed to retain iROLL-O participants with lower confidence and functional mobility, and more research is needed to investigate the impact of the intervention on key outcomes over time.

Fall detection from a manual wheelchair: preliminary findings based on accelerometers using machine learning techniques.

Automated fall detection devices for individuals who use wheelchairs to minimize the consequences of falls are lacking. This study aimed to develop and train a fall detection algorithm to differentiate falls from wheelchair mobility activities using machine learning techniques. Thirty, healthy, ambulatory, young adults simulated falls from a wheelchair and performed other wheelchair-related mobility activities in a laboratory. Neural Network classifiers were used to train the algorithm developed based on data retrieved from accelerometers mounted at the participant's wrist, chest, and head. Results indicate excellent accuracy to differentiate between falls and wheelchair mobility activities. The sensors mounted at the wrist, chest, and head presented with an accuracy of 100%, 96.9%, and 94.8%, respectively, using data from 258 falls and 220 wheelchair mobility activities. This pilot study indicates that a fall detection algorithm developed in a laboratory setting based on fall accelerometer patterns can accurately differentiate wheelchair-related falls and wheelchair mobility activities. This algorithm should be integrated into a wrist-worn devices and tested among individuals who use a wheelchair in the community.

The Dynamic Interplay of Objective and Subjective Balance and Subsequent Task Performance: Implications for Fall Risk in Older Adults.

INTRODUCTION: Falls occur in daily life when an activity results in a loss of balance that is too great to recover from. Our purpose in this study was to examine how fall risk differentiates the dynamic interplay of objective and subjective balance on a given day and subsequent task performance on that day. METHODS: For 30 consecutive days, following a baseline fall risk assessment, 41 older adults (56% female, Age M = 75.22, SD = 6.75) self-assessed balance and task performance using a smartphone. The Activity-specific Balance Confidence scale measured subjective balance. Postural sway and chair-stand performance were measured within a smartphone using accelerometry. Data were analyzed using multilevel random coefficient models. RESULTS: Tests of heterogeneity in level one residuals showed day-to-day variability in balance confidence and postural sway to be greater in individuals with higher fall risk at baseline. Baseline fall risk differentiated how the interplay of balance confidence and postural sway on a given day related to chair-stand performance on that day. For those with higher fall risk, on days that balance confidence was higher, greater postural sway was followed by greater chair-stand performance. CONCLUSION: Findings indicate that older adults, especially those with higher fall risk, may be unaware of subtle fluctuations in balance, which could lead to engaging in activities that exceed the capacity to maintain balance at that moment. Fall prevention efforts should address older adults' understanding of and responses to fluctuations of physical function in daily life.

Arterial stiffness and augmentation index are associated with balance function in young adults.

OBJECTIVE: Arterial stiffness and pulsatile central hemodynamics have been shown to affect various aspects of physical function, such as exercise capacity, gait speed, and motor control. The aim of this study was to examine the potential association between arterial stiffness and balance function in healthy younger men and women. METHODS: 112 participants (age = 21 ± 4 years, n = 78 women) underwent measures of arterial stiffness, pulsatile central hemodynamics, balance function and physical fitness in this cross-sectional study. Postural sway was measured in triplicate while participants stood on a foam surface with their eyes closed for 20 s. The average total center of pressure path length from the three trials was used for analysis. Measures of vascular function were estimated using an oscillometric blood pressure device while at rest and included pulse wave velocity (PWV), augmentation index (AIx), and pulse pressure amplification. Measures of physical fitness used as covariates in statistical models included handgrip strength determined from a handgrip dynamometer, lower-body flexibility assessed using a sit-and-reach test, estimated maximal aerobic capacity (VO2max) using heart rate and a step test, and body fat percentage measured from air displacement plethysmography. RESULTS: The results from linear regression indicated that after considering sex, mean arterial pressure, body fat, estimated VO2max, handgrip strength, and sit-and-reach, PWV (ß = 0.44, p < 0.05) and AIx (ß = - 0.25, p < 0.01) were significant predictors of postural sway, explaining 10.2% of the variance. CONCLUSION: Vascular function is associated with balance function in young adults independent of physical fitness. Increased arterial stiffness may negatively influence balance, while wave reflections may be protective for balance.