Deborah Jehu

Deborah Jehu
Augusta University · Interdisciplinary Health Sciences

PhD in Human Kinetics
Lab website: https://debjehu.wixsite.com/gaitlab

About

45
Publications
8,411
Reads
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297
Citations
Introduction
The objective of Dr. Jehu’s research has been to generate new insights into 1) refining the design and delivery of therapeutic interventions; 2) refining falls-risk assessments; and 3) providing a better overall understanding of cognition and mobility in aging populations. She has collaborated with researchers, interdisciplinary healthcare professionals, health authorities, and industry partners across the world, which has provided her with a unique perspective on fall prevention research.

Publications

Publications (45)
Article
Full-text available
Limited research has examined attentional requirements of walking at various speeds. Twenty young adults were asked to walk 10 m at their preferred pace, 30% faster or 30% slower while verbally responding "top" as fast as possible to random auditory stimuli. Slow walking demonstrated significantly longer reaction time (RT; 457 ± 91 ms) than preferr...
Thesis
Full-text available
The current thesis investigated the effects of a 12-week multifactorial exercise and balance training program on balance control in older adults. Participants completed a baseline testing session which included a series of questionnaires, anthropometric measures, and 18 stance and walking tests. Those who were randomly assigned to the exercise grou...
Article
Abstract Flexible and appropriate allocation of attention resources is important during dual-tasking to achieve task goals while maintaining postural safety. This pilot study aimed to examine the influence of explicit prioritization of attention on the dual-task paradigm by employing two levels of difficulty for the postural tasks and reaction time...
Article
Full-text available
Objective: Using stratified analyses, we examined the cost-effectiveness of the Otago Exercise Programme (OEP), from a health care system perspective, among older women and men who have previously fallen. Methods: This study was a secondary stratified analysis (by women and men), of a 12-month prospective economic evaluation of a randomized clin...
Article
Full-text available
Background: The COVID-19 pandemic has resulted in increased sedentary behaviour and poorer health among office workers. Exergaming is a technology-driven mode of exercise that can improve health while physically distancing. Objective: The purpose of this commentary was to explain the benefits of exergaming on physical function, psychological hea...
Article
Introduction: Executive function is responsive to exercise and predictive of subsequent falls. Minimal clinically important differences (MCIDs) are critical for understanding whether observed changes are meaningful. However, MCIDs of many cognitive measures are not established. We aimed to determine MCIDs of the Digit Symbol Substitution Test ([DS...
Article
Background: Sex differences for subsequent falls and falls risk factors in community-dwelling older adults who have fallen are unknown. Our aim was to: (1) compare the number of falls between sexes, (2) identify modifiable falls risk factors, and (3) explore the interaction of sex on falls risk factors in older adults who fall. Methods: Four hun...
Article
Introduction: Strength and balance exercises prevent falls. Yet, exercise adherence is often low. To maximize the benefit of exercise on falls prevention, we aimed to identify baseline cognitive and mobility factors that predict adherence to the Otago Exercise Program (OEP) - a home-based exercise program proven to prevent falls. Methods: We con...
Article
Background: Poor muscle strength, balance, and functional mobility have predicted falls in older adults. Fall prevention guidelines recommend highly challenging balance training modes to decrease falls; however, it is unclear whether certain modes are more effective. The purpose of this study was to determine whether traditional balance training (...
Article
Older adults who fall recurrently (i.e., 2 or more falls/year) are at risk of functional decline and mortality. Understanding which risk factors for recurrent falls are most important will inform secondary fall prevention strategies that can reduce recurrent falls risk. Thus, we conducted a systematic review with meta-analysis to determine the rela...
Article
Objective We identified adherence-based case-mixes from participants’ longitudinal adherence to falls prevention exercise interventions over 12 months. Second, we identified modifiable baseline predictors (cognition, mobility and functional status) based on case-mix adherence trajectories. Study design and outcome measures This study was a 12-mont...
Article
The purpose of this study was to determine whether balance and functional mobility independently predict bone mineral density (BMD) in postmenopausal women. BMD at the hip and spine was measured with dual-energy x-ray absorptiometry (DEXA). Participants were assigned into groups (i.e., osteoporosis: n=20; osteo-penia: n=20; normal BMD: n=20) accord...
Article
Background and purpose: Mental tracking and verbal fluency tests have been linked to poor mobility and falls; however, no studies have examined the influence of imposing these tests on standing balance post-stroke. The purpose of this study was to investigate standing balance and cognitive performance across sensory conditions and cognitive tests...
Article
Full-text available
Introduction Older adults who fall recurrently (i.e., >1 fall/year) are at risk for functional decline and mortality. Key risk factors for recurrent falls in community-dwelling older adults are not well established due to methodological limitations, such as recall bias. A better understanding of the risk factors for recurrent falls will aid in refi...
Article
Background: Clinical practice for rehabilitation after mild traumatic brain injury (mTBI) is variable and guidance on when to initiate physical therapy is lacking. Wearable sensor technology may aid clinical assessment, performance monitoring and exercise adherence, potentially improving rehabilitation outcomes during unsupervised home exercise pr...
Article
Full-text available
Carrying an anterior load during obstacle negotiation increases attention demand, which may differ at various crossing stages. Less is known on the impact of lower visual field obstruction and the weight of the anterior load on obstacle negotiation and attention demand. The objectives of this study were to: (1) determine if carrying a weighted ante...
Article
To systematically review available evidence related to the characteristics of bone changes post-stroke and the relationship between various aspects of muscle function (e.g., strength, spasticity) and bone properties after stroke onset. An extensive online database search was undertaken (last search in January 2019). Articles that examined the bone...
Poster
Accurately identifying older adults who will experience subsequent falls is important for the provision of secondary fall prevention. The purpose of this study was to determine the accuracy of the Physiological Profile Assessment (PPA) – a valid and reliable fall-risk assessment [1] – in predicting subsequent falls over a 12-month period in older a...
Article
Background: Although balance is commonly assessed during the recovery of total knee arthroplasty [TKA], the minimal clinically important difference [MCID] values of frequently used balance assessment tools have not been previously established in this population. Objective: To determine the MCID of four balance tests [ie, the Balance Evaluation S...
Article
Full-text available
Wearable inertial measurement units (IMUs) may provide useful, objective information to clinicians interested in quantifying head movements as patients’ progress through vestibular rehabilitation. The purpose of this study was to validate an IMU-based algorithm against criterion data (motion capture) to estimate average head and trunk range of moti...
Poster
Full-text available
Abstract: Background: Mild traumatic brain injury (mTBI) is known to disrupt balance control and has been linked to abnormal use of the vestibular and visual systems. Peripheral vestibular and oculomotor dysfunction may affect how patients rely on information from these systems. We used a test of central sensorimotor integration (CSMI) to determine...
Article
Background and Purpose— Functional community ambulation requires the ability to perform mobility and cognitive task simultaneously (dual-tasking). This single-blinded randomized controlled study aimed to examine the effects of dual-task exercise in chronic stroke patients. Methods— Eighty-four chronic stroke patients (24 women; age, 61.2±6.4 years...
Presentation
Background Balance and mobility issues are common non-resolving symptoms following a mild traumatic brain injury (mTBI). Traditionally, balance and mobility following an mTBI are assessed within the clinic using subjective clinical rating scales (e.g. Balance Error Scoring System (BESS) etc.) that may not be sensitive to subtle deficits. With the a...
Article
Background: Individuals with total knee arthroplasty (TKA) often experience pain and reduced balance control, which may predispose them to greater fall risk. Objective: The objective of this study was to determine the frequency and circumstance of falls and fall-related risk factors within a 6-month follow-up period in individuals after TKA. De...
Conference Paper
Mild traumatic brain injury (mTBI) is common in sport contexts as well as following motor vehicle accidents and falls. Previous work has examined saccular function of the otolith organ using Cervical Vestibular-Evoked Myogenic Potential (cVEMP) in mTBI patients; however, the Ocular Vestibular-Evoked Myogenic Potential (oVEMP), a recent technique, e...
Conference Paper
The aim was to determine the effects of levodopa medication on the performance of a repetitive pointing task while standing, and to investigate the optimal trial duration in individuals with Parkinson’s disease (PD) compared to older adults. Seventeen individuals with PD (5 freezers) and 9 older adults stood on force platforms for 30 s and 120 s wh...
Article
Full-text available
We aimed to determine the effects of levodopa medication on the performance of a repetitive pointing task while standing, and to investigate the optimal trial duration in individuals with Parkinson’s disease, and older adults. Seventeen individuals with Parkinson’s disease (5 freezers) and 9 older adults stood on force platforms for 30 s and 120 s...
Article
The purpose of this study was to investigate obstacle clearance and reaction time parameters when crossing a series of six obstacles in older adults. A second aim was to examine the repeated exposure of this testing protocol once per week for 5 weeks. In total, 10 older adults (five females; age: 67.0 ± 6.9 years) walked onto and over six obstacles...
Article
The purpose of this study was to determine whether balance and mobility training (BMT) or balance and mobility plus cognitive training (BMT + C) would improve obstacle clearance and reaction time (RT); whether further improvements would be exposed in the BMT + C group relative to the BMT group; and whether possible improvements would be sustained a...
Article
Background and aim: Balance deficits are common after total knee arthroplasty (TKA); however the responsiveness of commonly used balance measurement tools has not been well defined. The objective of this prospective study was to compare the internal and external responsiveness of four measurement tools in assessing recovery of balance function fol...
Article
Full-text available
Background and aimsThe purpose was to explore the impact of balance and mobility training (BMT), balance and mobility plus cognitive training (BMT + C) and no training on the timed up and go (TUG), TUG cognitive (TUGcog), and TUG manual (TUGman) in older adults. A preliminary experiment examined the stability of these TUG measures over a 5-week per...
Article
Full-text available
Background The Fukuda stepping and Babinski-Weil tests are associated with unperceived body rotation and linear displacements in young adults, but performance in older adults on these two tests has yet to be determined. Aim The main purpose was to compare the performance and reliability of the Fukuda stepping and Babinski-Weil tests in young and ol...
Article
Directing attention away from postural control and onto a cognitive task affords the emergence of automatic control processes. Perhaps the continuous withdrawal of attention from the postural task facilitates an automatization of posture as opposed to only intermittent withdrawal; however this is unknown in the aging population. Twenty older adults...
Article
Full-text available
Background and aim Improved performance may be inherent due to repeated exposure to a testing protocol. However, limited research has examined this phenomenon in postural control. The aim was to determine the influence of repeated administration of a dual-task testing protocol once per week for 5 weeks on postural sway and reaction time. Methods Te...
Conference Paper
Full-text available
Falls are a major health concern in the older adult population. Preliminary evidence suggests that dual-task balance training may improve functional mobility in older adults. The objective of this study was to determine whether dual- or triple-task balance training could improve the time to completion of the Timed-Up-and-Go (TUG) in community-dwell...
Article
Full-text available
Biofeedback has been shown to minimize body sway during quiet standing. However, limited research has reported the optimal sensitivity parameters of visual biofeedback related to the center of pressure (COP) sway. Accordingly, 19 young adults (6 males; 13 females; aged 21.3 ± 2.5) stood with feet together and performed three visual biofeedback inte...
Article
Aims: This study aimed to compare performance, within-subject variability and test–retest reliability between the 50-step and 100-step Fukuda test in healthy older adults. Methods: Fifty participants aged between 65 and 75 years performed three trials of both the 50- and 100-step tests on two separate sessions seven days apart. Their final foot pos...
Article
Research suggests that postural control synergies are sensitive to cognitive manipulations; however, the impact of different types of cognitive tasks on postural control remains inconclusive. The authors examined the effect of discrete and continuous tasks on postural control. Sixteen healthy young adults (M age = 22.7 ± 2.2 years) stood with feet...
Conference Paper
Carrying an anterior load while navigating an obstacle has been shown to increase attention demand, and this is thought to occur due to the added load as well as the occlusion of immediate anterior vision brought on by the load. Vision is an important factor when navigating an obstacle to aid in preventing any missteps while clearing the obstacle....
Conference Paper
Full-text available
The 16-item Activities-specific Balance Confidence (ABC-16) scale is commonly used to assess balance confidence in older adults. Recent work has shown that a shortened version of this scale (ABC-6; includes the 6 most challenging balance tasks) can also be used as a valid and reliable measure of balance confidence in a sample of 35 community-living...

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