Reduce Fall Risk Research Articles

Effects of physical-cognitive training on physical and psychological functions among older adults with type 2 diabetes and balance impairment: a randomized controlled trial.

Risks of falls among older adults are multifactorial in nature. A combined training program might be beneficial on fall-related outcomes. This study aimed to explore the effects of group-based physical-cognitive trainings on physical and psychological outcomes among older adults with type 2 diabetes mellitus (T2DM) and balance impairment. Fall incidence were also determined. Thirty-seven older adults with T2DM and balance impairment were randomly assigned to control and intervention groups. The intervention program comprised of 24 training sessions of 45–60 min exercise for 8 weeks. The exercise consisted of warm-up, aerobic exercise by nine square stepping, resistance exercise combined with cognitive training and cool down. All participants were assessed at baseline, 4 and 8 weeks after intervention, and 1-year follow-up. Both groups reported similar rates of falls. Global cognition, depressive symptoms, and fear of falling did not differ between groups at any time. The Timed Up & Go (TUG) test, alternate stepping test (AST), knee extensors, ankle plantarflexors, and dorsiflexors strength differed at 4 weeks. TUG, AST, hip abductors, knee flexors, ankle plantarflexors, and dorsiflexors strength differed at 8 weeks. The activity of daily living (ADL), TUG test (P=0.002) and AST, hip extensors and abductors, knee extensors and flexors, ankle plantarflexors and dorsiflexors were different at 1-year follow-up. The group-based physical-cognitive training could benefit older adults with T2DM in terms of maintaining ADL. The intervention could reduce fall risk factors by improving balance and lower limb muscle strength among older adults with T2DM and balance impairment.

A Novel Tele-rehabilitation Program Aimed at Reducing Fall Risk in Parkinson’s Disease Patients (5074)

A Novel Tele-rehabilitation Program Aimed at Reducing Fall Risk in Parkinson’s Disease Patients (5074)

Comparison of 360° Turn Cycles among Individuals after Stroke and Healthy Older Adults

Stroke survivors are at high risk of falling during turning. The kinematics of performing a 360° turn have not been fully analyzed among individuals after stroke. Quantitative differences in the parameters of turning between healthy older adults and those after stroke could provide detailed information on turning ability among these groups. The purpose of the current study was to characterize differences between healthy older adults and adults after stroke in 360° turn kinematics. Fourteen individuals with chronic stroke (mean age: 69 ± 8.4 years) and 14 healthy older adults (mean age: 74 ± 8.7 years) performed three trials of 360° turning. Kinematics data were collected using 26 reflective markers at several body landmarks. This new method for quantifying turning revealed that stroke significantly affected the number of turn cycles, number of single support (SS) critical phases, and critical time. In some cases, falls among individuals with stroke may be related to the combination of impaired movement patterns and the complexity of tasks such as turning. Understanding turning kinematics can inform clinical interventions targeting improvements in turning ability and consequently, fall risk reduction in individuals after stroke.

Can Fall Risk Screening and Fall Prevention Advice in Hospital Settings Motivate Older Adult Patients to Take Action to Reduce Fall Risk?

Objective:We investigated whether an in-hospital intervention consisting of fall risk screening and tailored advice could prompt patients to take preventive action.Method:Patients (≥70) attending the emergency department and nephrology outpatient clinic in a Dutch hospital were screened. Patients at high risk received tailored advice based on their individual risk factors. Three months after screening, preventive steps taken by patients were surveyed.Results:Two hundred sixteen patients were screened. Of the 83 patients completing a 3-month follow-up, 51.8% took action; among patients who received tailored advice (n = 20), 70% took action. Patients most often adhered to advice on improving muscle strength and undergoing vision checkups (20%). Tailored advice and a reported low quality of life were associated with consulting a health care provider.Discussion:Patients at risk in these settings are inclined to take action after screening. However, they do not always adhere to the tailored prevention advice.

Half of geriatric trauma patients have significant ocular disease: Findings of a novel trauma provider eye examination for vision screening.

Geriatric ground level fall is a common admission diagnosis for trauma centers in the United States. Visual health has been linked to fall risk reduction in older adult but is rarely fully evaluated during a trauma admission. Using a commercial application and a questionnaire, we developed and tested a trauma provider eye examination (TPEE) to screen visual health. This study used the TPEE to (1) evaluate the prevalence of undiagnosed or undertreated visual disease in geriatric trauma patients and (2) determine the feasibility and reliability of the TPEE to screen for vision disease. This prospective study included patients older than 60 years evaluated by the trauma service from June 2019 to May 2020. Patients with ocular or globe trauma were excluded. The primary outcome was significant abnormal vision (SAV) found using the TPEE. Ophthalmology performed a dilated examination as the criterion standard for comparison. We assessed the feasibility and reliability of the TPEE. Fisher's exact test and logistic model were used in the data analysis. Enrollment concluded with 96 patients. Mean age was 75 years, and fall (79%) was the most common mechanism of injury. Significant abnormal vision was common: undiagnosed disease was found in 39% and undertreated in 14%. Trauma provider examination was 94% sensitive and 92% specific for SAV cases. Congruence between TPEE and ophthalmology examination was highest in pupil examination (86%), visual fields (58%), and Amsler grid (52%). Multivariate analysis found that a combination of an abnormal Amsler test and abnormal visual field defect was significantly associated with SAV (odds ratio, 4.1; p = 0.03). Trauma provider eye examination screening can identify patients with visual deficits. Given the association between visual deficits and fall risk, older adults may benefit from such a screening or a formal ophthalmology referral. Therapeutic/Care Management, level II.

Effect of Three Months Pilates Training on Balance and Fall Risk in Older Women

This study assessed the effect of Pilates exercises on balance and fall risk in older women. Participants comprised 50 older women aged over 60 years, divided randomly into two groups: the experimental group (n = 30), which took part in Pilates sessions two times per week for three months, and the control group (n = 20). The control group did not participate in such sessions but also did not participate in any other rehabilitation programs or additional physical activity except everyday activities. Before and after the training cycle, all women underwent an assessment using Timed Up and Go (TUG), the One Leg Stance Test (OLST), a test performed on a Freestep baropodometric platform, and the tests performed on a Biosway platform. After the training, significantly decreased values of the surface of the ellipse (p = 0.0037) and mean values of velocity (p = 0.0262) for the right foot in the experimental group were observed. The Limits of Stability (LoS) test (p = 0.005) and the Modified Clinical Test of Sensory Interaction on Balance (m-CTSIB) performed on an unstable surface with eyes closed (p = 0.0409) indicated statistically significant changes in the experimental group. None of the above changes were statistically significant in relation to the control group. Pilates training affected the participants’ balance by improving LOS and reducing fall risk.

Effects of recreational therapy and speech therapy among participants with Parkinson disease and Parkinson plus conditions: Findings from a 16-week multidisciplinary program

Idiopathic Parkinson disease (IPD) affects multiple aspects of a person’s daily functioning. The current study examined the effects of a multidisciplinary intervention program, including recreational therapy (RT) and speech therapy, among individuals with IPD or PD plus conditions over 16 weeks. The study included six participants with IPD and a participant with progressive supranuclear palsy (PD plus condition). Participants with IPD attended a weekly LOUD Crowd® program consisting of different speech and cognitive activities. In addition, all seven participants attended an RT intervention focusing on fall prevention education and implementing balance, strength, and endurance routines. Results indicated improvements in dynamic balance, reduced fall risk, cognition, swallowing, and voice-related outcomes. In conclusion, a multidisciplinary intervention program is beneficial for individuals with PD or PD plus conditions.

Feasibility of Implementing a Tai Chi Program in an Assisted Living Facility: Reducing Fall Risks and Improving Quality of Life.

One in four American older adults fall every year, resulting in injuries, death, and significant financial burden. Although fall etiology is multifactorial, the medical problems and aging factors that lead to unsteady gait and imbalance represent one of the major fall risks among older adults. A growing number of research studies support the health benefits of regular Tai Chi (TC) practice including improved physical, cognitive, and psychological function. The purpose of this quality improvement project was to assess the feasibility of establishing a 12-week (45 min per session) Tai Chi (TC) program (Sun Style Tai Chi) in a 75 bed assisted living facility as well as to evaluate the potential of the TC program to improve the fear of falling and functional mobility (as proxy for fall risk) and quality of life (QoL). A nurse who was a certified TC instructor taught the program. Twenty-three participants, 96% female and 96% white, mean (SD) age 83 (±7) years, attended one or more TC classes. Class attendance, self-reported questionnaires (e.g., fear of falling, QoL), and objective measure Timed Up and Go (TUG) were used to collect data. Nine participants (39%) completed 9 out of 12 sessions. Eleven participants (48%) completed both pre- and post-intervention measurements and twelve (52%) provided feedback on a post-intervention satisfaction survey. Participants showed 20% improvement in fear of falling (mean relative change) and 21% decrease (mean relative change) in TUG test (p = 0.001) with no clinically important changes in QoL. This quality improvement project suggested that TC is a feasible exercise that might have the potential to reduce risk of falls in older adults, and the program was well accepted with no serious or other adverse events reported. Further research studies are needed to examine the potential effects of TC programs with an appropriately powered RCT and longer intervention period.

Exer-gaming reduces fall risk and improves mobility after stroke.

The current study evaluated the effect of virtual reality based balance training in 30 stroke patients recruited via purposive sampling technique for a clinical trial. Sealed envelope method was used to randomly allocate patients into two groups, i.e. Exer-gaming group (EGG) (n=15) and traditional training (TBT) group (n=15). Patients ranging in age from 50 to 60 years were included using Modified Rankin Scale (MRS). Patients with cognitive deficits, severe physical impairments, contractures, inability to perform tasks, complications of the joint that affected movement, history of recent fracture, arthritis and those on drugs that could affect their physical function were excluded. Data was collected using Berg Balance Scale (BBS) and Timed Up & Go Test (TUG). Significant improvement was observed in the exer-gaming training group after completing intervention (P<0.001). Exer-gaming appears to be more effective in improving functional level, mobility and balance in stroke patients. The study also suggests that exer-gaming further provides dynamic environment for stroke patients, thereby improving dynamic balance and mobility.

Efficacy of Traditional Physical Therapy Versus Otago-Based Exercise in Fall Prevention for ALF-Residing Older Adults.

Falls are a leading cause of morbidity, mortality, loss of independence, and significant functional decline in aging populations. Effective interventions aimed at reducing the risk of falls, and preventing associated disability and functional decline, are needed to promote the health and wellness of older adults. Recent literature has found that an Otago-based exercise program (OBEP), which incorporates strengthening, balance, and walking, may not only decrease falls and fall risk among community-dwelling older adults but may also be effective among older adults residing in assisted living facilities (ALFs). The purpose of this study is to expand upon current research by comparing the outcomes of an OBEP and traditional physical therapy (TPT) in decreasing falls and the risk of falls among older adults living in an ALF. The authors hypothesized that traditional physical therapy would reduce fall risk and the number of falls in older adults residing in ALFs more than an OBEP. This study conducted a 2-group retrospective chart review of 59 older adults living in an ALF from January 2013 to October 2018 who received either TPT (n = 29) or the OBEP (n = 30). Participants were a mean of 87 years old and were classified at risk for falls by the Tinetti Performance-Oriented Mobility Assessment (POMA). Primary variables included the number of falls prior to intervention, during intervention, and 1 year following intervention, as well as pre- and posttreatment Tinetti POMA scores. Efficacy was examined using multiple linear regression analysis. Both groups achieved reduced falls and increased POMA scores. Group assignment did not significantly predict performance in key outcome measures, namely the number of falls (P = .199) and Tinetti POMA scores (P = .063) following treatment. These findings indicated that both an OBEP and tpt may be effective interventions for reducing falls and fall risk in the ALF setting.

The Effects of Bicycle Simulator Training on Anticipatory and Compensatory Postural Control in Older Adults: Study Protocol for a Single-Blind Randomized Controlled Trial.

Background: Falls are the leading cause of fatal and non-fatal injuries among older adults. Perturbation-Based-Balance Training (PBBT) is a promising approach to reduce fall rates by improving reactive balance responses. PBBT programs are designed for older adults who are able to stand and walk on a motorized treadmill independently. However, frail older adults, whose fall rates are higher, may not have this ability and they cannot participate. Thus, there is a critical need for innovative perturbation exercise programs to improve reactive balance and reduce the fall risks among older adults in a wider range of functioning. Trunk and arms are highly involved in reactive balance reactions. We aim to investigate whether an alternative PBBT program that provides perturbations during hands-free bicycling in a sitting position, geared to improve trunk and arm reactive responses, can be transferred to reduce fall risks and improve balance function among pre-frail older adults.Methods: In a single-blinded randomized-controlled trial, 68 community-dwelling pre-frail older adults are randomly allocated into two intervention groups. The experimental group receives 24-PBBT sessions over 12-weeks that include self-induced internal and machine-induced external unannounced perturbations of balance during hands-free pedaling on a bicycle-simulator system, in combination with cognitive dual-tasks. The control group receives 24 pedaling sessions over 12-weeks by the same bicycle-simulator system under the same cognitive dual-tasks, but without balance perturbations. Participants' reactive and proactive balance functions and gait function are assessed before and after the 12-week intervention period (e.g., balance reactive responses and strategies, voluntary step execution test, postural stability in upright standing, Berg Balance Test, Six-meter walk test, as well as late life function and fear of falling questionnaires).Discussion: This research addresses two key issues in relation to balance re-training: (1) generalization of balance skills acquired through exposure to postural perturbations in a sitting position investigating the ability of pre-frail older adults to improve reactive and proactive balance responses in standing and walking, and (2) the individualization of perturbation training to older adults' neuromotor capacities in order to optimize training responses and their applicability to real-life challenges.Clinical Trial Registration: www.clinicaltrials.gov, NCT03636672 / BARZI0104; Registered: July 22, 2018; Enrolment of the first participant March: 1, 2019. See Supplementary File.

Does stroke-induced sensorimotor impairment and perturbation intensity affect gait-slip outcomes?

People with chronic stroke (PwCS) demonstrate similar gait-slip fall-risk on both paretic and non-paretic side. Compensatory stepping and slipping limb control are crucial to reduce gait-slip fall-risk. Given the unpredictable intensities of real-life perturbations, this study aimed to determine whether recovery from paretic or non-paretic slips vary as a function of perturbation intensity among PwCS. Forty-four PwCS were assigned to non-paretic low intensity slip, non-paretic high intensity slip, paretic low intensity slip, or paretic high intensity slip group. Participants were subjected to a novel overground gait-slip with a distance of 24 cm (low) or 45 cm (high), under either limb. Recovery strategies, center of mass (CoM) state stability and slipping kinematics were analyzed. Both non-paretic high and low intensity groups demonstrated similar percentage of aborted and recovery stepping, however, paretic high intensity group demonstrated greater aborted stepping (p > 0.05). Both high and low intensity paretic slip groups demonstrated reduced post-slip CoM stability relative to the non-paretic slip groups (p < 0.05). Slip displacement was greater in paretic high group compared with non-paretic high group (p < 0.05). Greater slip displacement at higher intensity was noted only in paretic slip group (p < 0.05). The slip velocity was faster in paretic groups compared to non-paretic slip groups (p < 0.05). Paretic slips showed lower stability at both intensities associated with difficulty in modulating slipping kinematics and resorting to an increased aborted stepping strategy compared to non-paretic slip. These findings are suggestive of developing balance interventions for improving both compensatory non-paretic limb stepping and reactive control of slipping paretic limb for fall-risk reduction.

Stepping Out: A Pilot Program to Reduce Falls Risk in People with Mild Cognitive Impairment

Cognitive impairment significantly increases the risk of accidental falls in older adults, and falls outcomes are more severe in this population. However, few interventions exist to reduce falls among individuals with cognitive impairment. To address this gap, we developed Stepping Out, by modifying the evidenced-based falls prevention program, Stepping On, tailoring it to meet the cognitive needs of individuals with mild cognitive impairment (MCI) who are at risk for falls. Our objectives were to determine whether incorporating specific teaching and learning strategies among people with MCI would be associated with program feasibility as well as with positive trends in reducing fall risk. 16 older veterans with MCI at risk for falls (mean age 77.5, SD 6.75) participated in Stepping Out. The intervention comprised a group program, each with four veterans and their partners, conducted in two-hour weekly sessions for seven weeks, with a follow-up phone call and subsequent booster session. Teaching and learning adaptations for cognitive impairment included cognitive and compensatory strategies, addition of a partner, increased incorporation of procedural memory, and use of principles of self-determination theory to enhance motivation. Pre-post measures included physical measures of balance and mobility and self-reported falls. The program was found to be feasible for participants, as measured by an attendance rate of 95%. While no change was exhibited on balance or mobility tasks, participants displayed a significant reduction in falls over a six-month period (median change 2.00 falls, range 0-12 falls, p=0.002). The findings of this feasibility and pilot study support the notion that individuals with MCI can benefit from specific teaching and learning techniques incorporated into a multifactorial, cognitively-based program to reduce falls risk. Stepping Out has potential for further investigation with a randomized control group to assess efficacy.

Effects of 6-Month Multimodal Physical Exercise Program on Bone Mineral Density, Fall Risk, Balance, and Gait in Patients with Alzheimer's Disease: A Controlled Clinical Trial.

We aimed to determine the short- and medium-term effects of a multimodal physical exercise program (MPEP) on bone health status, fall risk, balance, and gait in patients with Alzheimer’s disease. A single-blinded, controlled clinical trial was performed where 72 subjects were allocated in a 3:1 ratio to an intervention group (IG; n = 53) and control group (CG; n = 19), where the IG’s subjects were admitted to live in a State Reference Center of Alzheimer’s disease, which offers the targeted exercise program, while the CG’s subjects resided in independent living. A multidisciplinary health team assessed all patients before allocation, and dependent outcomes were again assessed at one, three, and six months. During the study, falls were recorded, and in all evaluations, bone mineral density was measured using a calcaneal quantitative ultrasound densitometer; balance and gait were measured using the performance-oriented mobility assessment (POMA), the timed up and go test (TUG), the one-leg balance test (OLB), and the functional reach test (FR). There were no differences between groups at baseline for all outcome measures. The prevalence of falls was significantly lower in the IG (15.09%) than in the CG (42.11%) (χ2 = 5.904; p = 0.015). We also found that there was a significant time*group interaction, with a post hoc Šidák test finding significant differences of improved physical function, especially in gait, for the IG, as assessed by POMA-Total, POMA-Gait, and TUG with a large effect size (ƞ2p = 0.185–0.201). In balance, we found significant differences between groups, regardless of time, and a medium effect size as assessed by POMA-Balance and the OLB (ƞ2p = 0.091–0.104). Clinically relevant effects were observed, although without significant differences in bone health, with a slowing of bone loss. These results show that a multimodal physical exercise program reduces fall risk and produces an improvement in gait, balance, and bone mineral density in the short and medium term in institutionalized patients with Alzheimer’s disease.

The Effect of an Interactive Tele Rehabilitation Program on Balance in Older Individuals

Objective: To investigate the effect of a home-based interactive telerehabilitation program on balance performance in older people, and to compare the results with a nonsupervised home exercise (NHE) program. Subjects and Methods: A total of 50 participants (35 females), aged 65–90 years, were included in the study. The subjects were randomly assigned to one of three groups as the interactive telerehabilitation home exercise group (ITHE), NHE group or control group. The ITHE and NHE groups exercised three times per week for 8 weeks. The outcome measures were the Berg Functional Balance Scale (BBS), Timed Up and Go Test (TUG), Sway Balance Mobile Application, Trait Anxiety Inventory (TAI), and the World Health Organization Quality of Life Instrument-Older Adults Module (WHL). Results: In the control group, no difference was observed in the TUG and BBS scores, at the end of the 8 weeks compared with preexercise (pre-ex), whereas these scores increased significantly in the NHE (TUG: P &lt; 0.001, BBS: P &lt; 0.001) and ITHE groups (TUG: P &lt; 0.001, BBS: P = 0.003). The WHL scores increased significantly in all three groups, and no difference was observed in the TAI scores. There was a significant difference in SWAY score only in the telerehabilitation group compared with pre-ex (P &lt; 0.001). Conclusions: Although NHE and ITHE were effective on the improvement of balance, mobility and reduction of fall risk in older individuals, this effect was found to be greater in the ITHE group. Quality of life increased in all groups, but no change in anxiety level was observed.

Effects of water aerobics on posture alignment and risk of falls of older adults: an intervention study

ABSTRACT Considering that aging leads to losses in postural control and balance, our objective was to analyze the effects of water aerobics on posture alignment and risk of falls in older adults. A quasi-experimental intervention study included 49 older adults in the Intervention Group (IG) and 34 in the Control Group (CG). A plumbed symmetrograph assessed posture alignment, while a Time Up &amp; Go test determined the fall risk. The IG performed water aerobics twice a week for three months. Posture alignment significantly improved in most body segments assessed for the IG, and worsened in the CG. The low risk of falls in the IG increased by 28% in relation to the CG. We concluded that water aerobics improved posture alignment and reduced fall risk in older adults.

Muscular and cortical activation during dynamic and static balance in the elderly: A scoping review.

Falls due to balance impairment are a major cause of injury and disability in the elderly. The study of neurophysiological correlates during static and dynamic balance tasks is an emerging area of research that could lead to novel rehabilitation strategies and reduce fall risk. This review aims to highlight key concepts and identify gaps in the current knowledge of balance control in the elderly that could be addressed by relying on surface electromyographic (EMG) and electroencephalographic (EEG) recordings. The neurophysiological hypotheses underlying balance studies in the elderly as well as the methodologies, findings, and limitations of prior work are herein addressed. The literature shows: 1) a wide heterogeneity in the experimental procedures, protocols, and analyses; 2) a paucity of studies involving the investigation of cortical activity; 3) aging-related alterations of cortical activation during balance tasks characterized by lower cortico-muscular coherence and increased allocation of attentional control to postural tasks in the elderly; and 4) EMG patterns characterized by delayed onset after perturbations, increased levels of activity, and greater levels of muscle co-activation in the elderly compared to younger adults. EMG and EEG recordings are valuable tools to monitor muscular and cortical activity during the performance of balance tasks. However, standardized protocols and analysis techniques should be agreed upon and shared by the scientific community to provide reliable and reproducible results. This will allow researchers to gain a comprehensive knowledge on the neurophysiological changes affecting static and dynamic balance in the elderly and will inform the design of rehabilitative and preventive interventions.

Altered postural stability in elderly women following a single session of head-mounted display virtual reality

Forty-seven female subjects underwent a 20-minute virtual reality session. The mean age of the subjects was 70.12 years. As an immersive source, we used a relaxing virtual reality game with a head-mounted display device. The postural stability test was conducted using a Nintendo Wii force plate. Participants completed a set of three 30-s trials in which they took a quiet bipedal eyes-open stance while standing on a hard surface: before the virtual reality session, immediately after the virtual reality session, and 2 minutes after the virtual reality session. Centre of pressure parameters were analysed in the sagittal and frontal planes. Analysing the results obtained immediately after the virtual reality session, significant differences were observed in almost all examined parameters. In the sagittal plane, centre of pressure path velocity increased by 10% ( p < 0.01) and path standard deviation by 15% ( p < 0.05). In the frontal plane, centre of pressure path velocity increased by 14% ( p < 0.01). After 2 minutes, all examined parameters showed no significant difference compared to before the virtual reality session. Immediately after the virtual reality session, there was an increase in almost all examined parameters. However, after 2 minutes, all examined parameters had returned to baseline. Therefore, to reduce fall risk after a virtual reality session, it is recommended that the subject spend at least 2 minutes in a sitting position.

Fear of Falling and Walking Quality: What Your Walking Reveals

Fear of Falling (FOF) is common among community-dwelling older adults and is associated with increased fall-risk. In this cross-sectional study we examined the relationships between FOF and factors associated with fall-risk such as gait quality, cognition, and walking-confidence. Using baseline data from older adult participants in a randomized exercise trial (N=232; age 77±6; 65% females; 40% reported FOF), we quantified the following outcome measure for (1) gait quality: harmonic ratio (smoothness) and time-frequency spatiotemporal variables from triaxial accelerometry during 6 minute walk; gait speed, step-time CoV (variability) and walk-ratio (step-length/cadence) on an instrumented walkway; (2) cognition: Trails A and B (3) walking-confidence: Gait efficacy Scale. Mann Whitney U-tests indicated individuals without FOF had better gait quality (p<0.05): greater smoothness (2.38±.58 vs 1.14±.73), speed (1.10±.15 vs 1.04±.17 m/s) and walk-ratio (.56±.07 vs .53±.08 cm/steps/min), lower step-time CoV (3.72±1.24 vs 4.17±1.66), and greater walking-confidence (89±11 vs 79±13). A random forest classifier predicted FOF with 64% (gait only) and 70% (additional variables: cognition, walking-confidence) accuracy; Gini-index based ranking indicated gait quality (smoothness vertical (V) direction, walking speed) were consistently important variables. Linear Support Vector Machine learning yielded accuracies of 60% (only gait) and 68% (with additional measures): smoothness V, mediolateral frequency bandwidth, gait speed among top 4 ranked variables in both models, and walking-confidence in the additional measures model; smoothness-V the highest weighted coefficient (-0.52). Based on these findings, interventions targeted for gait quality and walking-confidence may be important to overcome FOF and reduce fall risks.

Vitamin D Supplementation on Detailed Fall Characteristics

Evidence suggests Vitamin D supplementation may reduce fall risk in older adults, but effects on fall location and severity are less well described. We used STURDY trial data to examine whether Vitamin D supplementation reduces indoor, outdoor, “consequential” (falls resulting in injury or medical care), and repeat fall risk. Participants (77[SD=5.4] years; 44% women) were randomized to receive 200 (n=339) or 1000IU/day (n=349) of vitamin D3. Indoor, outdoor and consequential fall rates were similar between the ≥1000IU/day and 200IU/day groups (rate ratio [RR]:1.22, 95%CI:0.96-1.55; RR:0.85, 95%CI:0.65-1.10; and RR:1.16, 95%CI:0.93-1.45, respectively) during follow-up. The proportion of repeat fallers was similar between ≥1000IU/day versus 200IU/day groups over 3 months (7.8%[27/346] versus 6.5%[22/336], p=0.22), 6 months (18.8%(60/319) versus 16.2%(51/315), p=0.40), 12 months (29.9%(81/271) versus 31.2%(84/269), p=0.78) and 24 months (48.2%(66/137) versus 49.6%(66/133), p=0.90). In conclusion, Vitamin D supplementation ≥1000IU/day did not reduce indoor, outdoor, consequential or repeat fall risk.