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Purpose: To determine the prevalence and severity of manual wheelchair rear wheel misalignment in community-dwelling manual wheelchair users and estimate the associated increases in rolling resistance (RR) and risk of repetitive strain injuries (RSIs).

Materials and Methods: Data were collected in an outpatient rehabilitation clinic, a university research laboratory, and at adaptive sporting events in the United States. Two hundred active, self-propelling man- ual wheelchair users were recruited. Angular misalignment (referred to as toe angle) while the wheelchair was loaded with the user, and the difference between the maximum and minimum toe angle (referred to as slop) with the wheelchair unloaded.

Results: Average results for toe angle and slop (movement in the rear wheels) were 0.92 and 0.61 degrees, respectively. Using a lab-based testing method, we quantified the impact of increased RR forces due to misalignment in increased RR forces. Our results indicate that the average toe angle while under load and slop, without loading, measured in the community increase required propulsion force by 3.0 N. Combined toe angle and slop (i.e., the worst-case scenario) added increased propulsion force by 3.9 N. Conclusions: We found that rear-wheel misalignment was prevalent and severe enough that it may increase the risk for RSIs and decrease participation. To mitigate this issue, future work should focus on reducing misalignment through improved maintenance interventions and increased manufacturing qual- ity through more stringent standards.

Purpose: Only 1 in 10 people with disabilities can access assistive devices, underlining the critical need for low-cost assistive products. This paper describes the design evolution of a manual user-operated standing wheelchair (SWC), translating from prototype to product.

Methods: The SWC design has been refined over 5 years through multiple iterations based on comments from user trials. The SWC product, Arise, provides standing functionality, facile outdoor mobility, afford- ability, customisability, and is aesthetically pleasing. A one-time fitting and training ensure optimal effort for operation, correct posture, and comfortable user experience. The SWC accommodates users of differ- ent sizes and body weights (up to 110kg) and minimises user effort with the use of a gas spring. Incorporating discrete adjustments enables customisation while retaining the advantages of mass manu- facturing, which is necessary for ensuring affordability.

Results: The SWC has been field-tested and well received by over 100 wheelchair users, and Arise was launched recently by the industry partner.

Conclusions: It should be noted that RESNA cautions on the use of any standing device without medical consultation. Nevertheless, with appropriate dissemination and awareness, it is anticipated that the afford- able SWC product, Arise, will immensely benefit the eligible users and make a difference in their quality of life.

Background

Assistive technology is the products and services used by individuals with functional limitations to enable participation in society and realisation of rights afforded by the United Nations Convention on the Rights of Persons with Disabilities. The Assistive Product List is a comprehensive list of products identified as essential for access through universal health coverage. Key stakeholders, including organisations of persons with disabilities, civil service organisations, academic organisations and government ministries are collaborating to integrate assistive technology into policy and develop a priority assistive products list for Malawi.

Objective

To understand the organisational characteristics of, and assistive products provided by, key stakeholders working in AT in Malawi.

Study Design

Online survey of representatives from key stakeholder organisations.

Methods

We surveyed representatives of key stakeholder organisations to gather information regarding assistive technology product and service provision in Malawi. Responses were analysed using counts for closed-ended questions, and conventional content analysis for open-ended questions.

Results

A total of 36 of the 50 APL products were provided by eight organisations. Related services were provided for 36 of the 50 APL products by twelve organisations. Five organisations reported providing both products and services. Products and services are largely funded by donation and provided free to those who require them.

Conclusion

A range of organisations in Malawi play a role in assistive product delivery and related services. Coordinated AP delivery and service provision is required at a national level which is sustainable and inclusive, and is based on identified needs of the Malawian population.

Background and aim:

This study investigated the current state of wheelchair services in Bangalore Rural district, as provided by Bangalore Baptist Hospital, and identified areas for improvement.

Method:

a cross-sectional survey was held among 50 wheelchair users. Data was collected on demographics, satisfaction, wheelchair skills and level of disability using QUEST, WST-Q and CHART-SF questionnaires.

Result:

Overall satisfaction can be described as more or less satisfied, scoring 3.8 out of 5. Wheelchair users were less satisfied with the services compared to the wheelchair itself. The skills a wheelchair users had were strongly correlated with satisfaction scores (p < 0.01). Differences in satisfaction between genders were observed and related to multiple factors.

Conclusion:

Wheelchairs should be easy to use with support services being easily accessible. A wheelchair should be delivered together with a training program to provide the user with the skills to operate and maintain the wheelchair. There are gender-wise differences in satisfaction towards wheelchair services that influence satisfaction.

Purpose: (1) to analyze training characteristics of recreationally active wheelchair users during handcycle training, and (2) to examine the associations between training load and change in physical capacity.

Methods: Former rehabilitation patients (N = 60) with health conditions such as spinal cord injury or amputation were included. Participants trained for five months. A handcycling/arm crank graded exercise test was performed before and after the training period. Outcomes: peak power output per kg (POpeak/kg) and peak oxygen uptake per kg (VO2peak/kg). Training load was defined as Training Impulse (TRIMP), which is rating of perceived exertion (sRPE) multiplied by duration of the session, in arbitrary units (AU). Training intensity distribution (TID) was also determined (time in zone 1, RPE ≤4; zone 2, RPE 5–6; zone 3, RPE ≥7).

Results: Multilevel regression analyses showed that TRIMPsRPE was not significantly associated with change in physical capacity. Time in zone 2 (RPE 5–6) was significantly associated with ΔVO2peak, %ΔVO2peak, ΔVO2peak/kg and %ΔVO2peak/kg.

Conclusion: Training at RPE 5–6 was the only determinant that was significantly associated with improvement in physical capacity. Additional controlled studies are necessary to demonstrate causality and gather more information about its usefulness, and optimal handcycle training regimes for recreationally active wheelchair users.

Background: Plaster of Paris (POP) is being used in different ways in the field of medicine, dentistry and rehabilitation. One of its uses is in the manufacture of models of body segments in prosthetics and orthotics. It is used as a one-off procedure in which the used material is dismantled and discarded. The disposal of discarded materials does not allow easy decomposition which then pollutes the environment. It is not known whether this material could be reused if recycled.

Objectives: The main objective of the study was to recycle POP models and determine its reuse in producing models with identical qualities, and thus reduce environmental pollution.

Method: The procedure adopted was to break discarded models into small pieces, remove impurities and dirt; then the sample models were milled, washed, dried and pulverised. The POP models were heated to evaporate crystalline water in order to determine for how many times it could be recycled while retaining the desired strength, setting time and working characteristics.

Results: The recycled POP reached higher setting temperatures and was stronger in terms of compressive strain and strength than the virgin POP. The highest temperature recorded for recycled POP was 40°C, which was higher than that for virgin powder (32.5°C). Testing compressive strength of all cylinders in all groups showed that the average compressive strength of the recycled powder mixed with water in a ratio of 1:1 was 2407 KN/m² and the ratio of 2:3 resulted in a compressive strength of 1028 KN/m², whereas the average compressive strength of virgin POP powder mixed with water in a ratio of 1:1 was 1807 KN/m² and the ratio of 2:3 resulted in a compressive strength of 798 KN/m². There were no differences in working properties between the recycled POP and the virgin POP.

Conclusion: It was therefore concluded that under controlled conditions, such as grinding size, heating temperature, time and avoidance of contamination, used POP could be continuously recycled, resulting in stronger and workable casts.

African Journal of Disability, Vol. 9, 2020

Motor activation is rarely integrated into the support of people with profound intellectual and multiple disabilities (PIMD), which might be the result of the limited evidence-based knowledge in this field. Practitioners have recently been developing several motor initiatives for people with PIMD, but it remains unclear about what core elements the motor initiatives actually consist of and to what level of quality it is implemented in practice. This study aims to offer an overview and analysis of the content and quality of motor initiatives actually in use for people with PIMD. Motor initiatives were explored by asking practitioners to complete an online inventory form. Documents, expert knowledge, and observations were used to collect data about the characteristics of the motor initiatives. The quality of the motor initiatives which met our eligibility criteria, was analyzed on the basis of the level of evidence for their effectiveness. The inventory yielded 118 motor initiatives of which 17 met the eligibility criteria. We identified four motor initiatives reflecting an approach to motorically activate people with PIMD within various activities, three including power-assisted exercises, three with aquatic exercises, two frameworks which integrated motor activities into their daily programs, two methods which included small-scale activities, two rhythmic movement therapies, and one program including gross motor activities. We found limited indications for descriptive evidence from 17 initiatives, limited or no indications for theoretical evidence from 12 and five initiatives respectively, and none of the initiatives provided a causal level of evidence for effectiveness. A wide variety of motor initiatives is used in current practice to activate persons with PIMD, although their effectiveness is actually unproven. Science and practice should cooperate to develop an evidence-based understanding to ensure more evidence-based support for the motor activation of people with PIMD in the future.

Purpose: It is well established that physical exercise, in general, decreases anxiety and depression. Para sport or sport for people with disabilities is used as a rehabilitation strategy to improve their quality of life. This study aimed to investigate people with disabilities who practise wheelchair fencing, sedentary people with physical disability and conventional fencers, assessed by Short Form 36 (SF-36), by comparing the groups.

Method: Forty-two people from Physical Disability Association of Parana (ADFP) answered SF-36 and were divided into three groups: Conventional Fencers (CF), Wheelchair Fencers (WF), and Sedentary People with Physical Disability (SD).

Results: This study was the first to report the Health-Related Quality of Life (HRQOL) of conventional fencers, wheelchair fencers, and sedentary people with physical disability, using SF-36. The data demonstrated high scores in CF and WF, on seven SF-36 scales of the eight-scale profile, including functional and mental health, role physical, bodily pain, general health perception, vitality, social functioning, mental health. Moreover, the sedentary group had lower scores in most of the domains when they were compared to CF.

Conclusion: The results might provide supportive evidence that HRQOL of WF has demonstrated a positive effect on people with disability since para sport has been used as a rehabilitation programme.

Implication: The implementation of a public campaign is recommended, about sport as a health promoter for disability and rehabilitation. By involving healthcare providers from the area, people with disabilities can be encouraged to participate in para sport.

Purpose: 

To develop a predictive model to inform the probability of lower limb prosthesis users’ functional potential for ambulation.

Materials and Methods: 

A retrospective analysis of a database of outcomes for 2770 lower limb prosthesis users was used to inform a classification and regression tree analysis. Gender, age, height, weight, body mass index adjusted for amputation, amputation level, cause of amputation, comorbid health status and functional mobility score [Prosthetic Limb Users Survey of Mobility (PLUS-M™)] were entered as potential predictive variables. Patient K-Level was used to assign dependent variable status as unlimited community ambulator (i.e., K3 or K4) or limited community/household ambulator (i.e., K1 or K2). The classification tree was initially trained from 20% of the sample and subsequently tested with the remaining sample.

Results: 

A classification tree was successfully developed, able to accurately classify 87.4% of individuals within the model’s training group (standard error 1.4%), and 81.6% within the model’s testing group (standard error 0.82%). Age, PLUS-M™ T-score, cause of amputation and body weight were retained within the tree logic.

Conclusions: 

The resultant classification tree has the ability to provide members of the clinical care team with predictive probabilities of a patient’s functional potential to help assist care decisions.