ABSTRACT The aim of this review is to investigate existing and developing technologies assessing metrics of manual wheelchair propulsion. A scoping review of scientific and gray literature was performed. Five databases were searched – Medline, Scopus, CINAHL, Institute of Electrical and Electronics Engineers (IEEE), and Embase. The 38 retained articles identified 27 devices categorized into accelerometers, wheelchair-mounted devices, instrumented wheels, and wearables. The devices included in this review can be used by manual wheelchair users to monitor propulsion effort and activity goals, by clinicians to assess rehabilitation programs, and to inform and guide future research. The findings support a need for further research into the development of custom algorithms for manual wheelchair user populations as well as further validation in broader free-living environments with equitable participant populations.

ABSTRACT Adaptive ride-on toy programs have increased in popularity in recent years and provide novel rehabilitation tools as developmental aids for children with disabilities. While the adaptations made to these toys are intended to provide a safer experience for children with disabilities, safety concerns still exist. Within this context, the purpose of this study was to use a model with varying joint stiffness as a first-order approximation of a child with disabilities and to investigate whether modifications to ride-on toys are sufficient to prevent common injuries. Because the population of children with disabilities who are receiving adaptive ride-on toys have a wide range of musculoskeletal disorders, those with both decreased and increased muscle stiffness were considered in this safety study. A 5-point harness reduced movement regardless of change in joint stiffness and therefore, results from this study indicate that the use of these harnesses is effective regardless of joint stiffness. Furthermore, as excursion-related injuries are considered more critical to the user than injuries relating to kinetic variables and no known injury thresholds were exceeded, the addition of a belt is considered a necessary trade-off with little-to-no added risk.

ABSTRACT Standardized test methods providing wheelchair cushion performance characteristics can aid cushion design and selection. Assessment of the changes in performance that occur with aging provides additional information. Test methods published by the International Organization for Standardization were applied to a cohort of 21 cushions of varying design and construct to assess changes in performance due to simulated aging. Performance tests measured immersion, envelopment, stiffness, impact response, and pressure distribution properties. Means of test outcome metrics pre- and post-aging are presented, and changes in the metrics due to aging are analyzed using linear mixed models. Statistically significant changes were found for outcome measures for each performance test. The minimum aging method simulating 18–24 months use had a significant effect on cushion performance. Changes to loaded contour depth, envelopment, pressure mapping, hysteresis, horizontal stiffness, and 10% force deflection characterization test metrics indicated decreased cushion performance. The simulated aging method resulted in cushion stiffening and reduced immersion, pressure distribution, and stability performance. Together, these changes may increase a user’s risk for pressure injuries.

ABSTRACT Wheelchair propulsion interventions typically teach manual wheelchair users to perform wheelchair propulsion biomechanics as recommended by the Clinical Practice Guidelines (CPG). Outcome measures for these interventions are primarily laboratory based. Discrepancies remain between manual wheelchair propulsion (MWP) in laboratory-based examinations and propulsion in the real-world. Current developments in machine learning (ML) allow for monitoring of MWP in the real world. In this study, we collected data from participants enrolled in two wheelchair propulsion interventions, then built an ML algorithm to distinguish CPG recommended MWP patterns from non-CPG-recommended patterns. Eight primary manual wheelchair users did not initially follow CPG recommendations but learned and performed CPG propulsion after the interventions. Participants each wore two inertial measurement units as they propelled their wheelchairs on a roller system, indoors overground, and outdoors. ML models were trained to classify propulsion patterns as following the CPG or not following the CPG. Video recordings were used for reference. For indoor detection, we found that a subject-independent model was able to achieve 85% accuracy. For outdoor detection, we found that the subject-independent model achieved 75.4% accuracy. These results provide further evidence that CPG and non-CPG-recommended MWP patterns can be predicted with wearable sensors using an ML algorithm.

ABSTRACT The purpose of this study was to provide evidence-based information about future special education teachers’ perceptions of their preparation for using assistive technology (AT), and the field status with respect to the use of AT. Content analysis was conducted in order to analyze the data from 15 semi-structured interviews and a focus group consisting of 8 participants. The results indicate that overall, the participants were dissatisfied with their preparation programs and the field status regarding the use of AT. Furthermore, the participants reported barriers and ethical considerations regarding the use of AT. Implications and recommendations are provided both for the research community and for decision-makers for special education teacher preparation programs and in the field.

To ensure that all people have access to assistive technology (AT), the World Health Organization (WHO) published a priority assistive product list in 2016 (World Health Organisation [WHO], 2016) a...

ABSTRACT Wireless technology products and services play a significant role in our everyday lives. Great advances in design features have improved the accessibility and utility of these technologies for older adults and people with disabilities. Yet, there is still opportunity to ensure upcoming designers of wireless technologies consider how their design helps or hinders their product’s potential users. In this paper, we describe the evolution of a series of half-day participatory design workshops intended to expose student designers to real-world problem-solving alongside experts in the fields of aging and disability services and end users. Workshop attendees rapidly worked through an inclusive design process identifying and defining problems, considering the design requirements to meet the needs of various individuals, and finally designing and refining concepts to solve those problems. We describe the design of the workshops, iterations intended to improve on the experience, and our recommendations for conducting similar workshops

ABSTRACT To successfully create assistive technologies for persons with dementia, product developers must understand the capacity of people with dementia to use these technologies. Capacity assessment is typically done through user experience research. However, the published literature is bereft of guidelines to conduct optimal user experience research in samples of persons with dementia. We recruited persons with dementia from community-based organizations and private partners to participate in user experience research for an assistive technology platform. After a testing session, we used semi-structured interviews to ask participants about their involvement in the user experience process. We employed an inductive thematic approach to analyze the interview transcripts and draft guidelines to meaningfully engage persons with dementia in user experience research in the future. Ten participants with mild to moderate dementia (6 females, 4 males) participated in the study. Nine participants had previous experience with mobile devices. Thematic analysis yielded three overarching themes: 1) the techniques, approaches and attributes of the interviewer; 2) participants’ views on being part of the user experience research process; and 3) specific items to optimize the research process. Resulting guidelines were divided into recommendations for the interviewer specifically, and for the broader research process.

ABSTRACT The writing process is a complex task involving dexterous manipulation of the writing instrument by the hand digits and biomechanical ergonomic factors that contribute to handwriting efficiency and productivity. We describe a pilot study using an instrumented writing apparatus – a sensor (pen) and a digitized writing surface (tablet) – to measure the pen-grip kinetics (digit forces) and the pen pressure applied to the tablet during a writing task. Eight elementary school students with no handwriting difficulties copied a short story. The mean digit forces on the pen were compared with the mean pen pressure on the tablet at five interval points. Results revealed that the digit forces on the pen were significantly stronger than the pen pressure on the tablet. Results also showed significantly less digit-force variability throughout the writing task than the pen-pressure variability on the writing surface, which significantly lessened toward the end of the writing task. Information on these properties can broaden understanding of the elements that influence nonproficient handwriting in children with dysgraphia. Results also indicate the possible efficacy of a therapeutic tool for handwriting assessment and intervention using objective measurements during writing, warranting future studies with children with and without dysgraphia.

ABSTRACT Empirical research and data are necessary for policy, planning and provision of services for persons with disabilities. Research data may be available but still not used by researchers and policy makers. The aim of this study is to explore existing empirical research and sources of data on Assistive Technology (AT) in Malawi in order to facilitate the development of an AT policy and Assistive Product List (APL). A two-stage process using a scoping review methodology was adopted to identify (1) empirical research on AT in Malawi and (2) sources of existing data on AT in Malawi. Following a narrative synthesis, 12 heterogenous studies that reported on the use, availability, sources and knowledge about AT in Malawi were identified. Identified studies suggest that there is high unmet need for AT and services in Malawi. Five major sources of data on disability and AT were Identified. Only 2 out of the 12 studies had used existing sources of data. The high unmet need for AT and services in Malawi have substantial implications for persons with disabilities. Developing mechanisms that will improve the use of existing data on AT in all countries is pivotal for the efficient and effective development of AT ecosystems.