Occupational performance and the transition to powered mobility: a pilot study

Validation of an Arabic translation of the Functional Mobility Assessment (FMA) tool for assistive mobility device users

Background

Functional mobility assessment (FMA) tool is a self-report questionnaire developed to measure users’ satisfaction with assistive mobility devices while performing activities of daily living.

Purpose

To validate an Arabic translation of the FMA tool for Arabic-speaking assistive mobility devices users.

Methods

A committee of 2 bilingual qualified occupational therapists translated the English version into Arabic which was verified by back translation. The final versions were administered to bilingual assistive mobility devices users. The participants were randomly assigned to answer either the English or Arabic version of the FMA first, followed by answering the FMA in the other language. The scores obtained were tested for agreement using the kappa statistic.

Results

Participants’ (n=52), 28 were males and 24 were females, average participant age was 39.4 years old and had used an assistive mobility device for 6.4 years. We found a significant moderate agreement between the scores obtained from the two versions (p<0.000). The kappa measurement of agreement was 0.59 (95% confidence interval, 0.48–0.70).

Conclusion

The FMA is now available in Arabic, and it is an appropriate measure for use in research and clinical practice to quantify satisfaction with a functional mobility among assistive mobility device users. Further studies should test its psychometric properties.

"Back into Life-With a Power Wheelchair": Learning from People with Severe Stroke through a Participatory Photovoice Study in a Metropolitan Area in Germany

Severe stroke leads to permanent changes in everyday life. Many stroke survivors depend on support in community mobility (CM). This leads to restrictions and limited social participation. A power wheelchair (PWC) can enable independent CM and reduce such restrictions. This participatory study focused on how people with severe stroke experience their CM in a PWC in Berlin/Germany and what changes they want to initiate. A research team of five severe stroke survivors and two occupational therapists examined the question using photovoice. Stroke survivors took photos of their environment, presented, discussed, and analyzed them at group meetings to identify themes, and disseminated their findings at exhibitions and congresses. The photos emphasize the significance of and unique relationship to the PWC for the self-determined expression of personal freedom. As a complex, individualized construct, CM requires an accessible environment and diverse planning strategies by PWC users to arrive at their destination and overcome suddenly occurring obstacles. Desired changes stress CM independent of external help, increased social esteem, and active involvement in the provision of assistive devices. Voices of severe stroke survivors need to be heard more in healthcare and research to ensure the possibility of equal social participation.

Psychosocial Impact of Powered Wheelchair, Users’ Satisfaction and Their Relation to Social Participation

Several studies showed positive effects of assistive technologies on psychosocial impact and participation of adults with mobility impairments. The purpose of this study was to assess the psychosocial and participation impact of powered wheelchairs. Participants were thirty persons with disabilities who use powered wheelchairs with diverse medical conditions. The Quebec User Evaluation of Satisfaction with Assistive Technology, the Psychosocial Impact of Assistive Devices Scale and the Activities and Participation Profile Related to Mobility were used, in addition to demographic, clinical and wheelchair related questions. The participants were satisfied with both the assistive technology and related services, with the lowest satisfaction scores belonging to those who had been using their wheelchairs for a longer period of time. We noticed significant restrictions in participation mostly among persons with longer wheelchair utilization. The most satisfied were the ones with better performance in terms of social participation. Psychosocial scores showed a positive impact with higher adaptability among persons who transitioned from a manual compared to those who already had a powered wheelchair. There was a positive psychosocial impact and therefore an increase in quality of life of its users.

Linking the Psychosocial Impact of Assistive Devices Scale (PIADS) to the International Classification of Functioning, Disability, and Health

PURPOSE

Assistive technologies are widely implemented in clinical and research settings. Despite their dissemination, the psychosocial impact of their adoption still deserves further consideration. The aim of the present study is to determine the degree of compatibility between the Psychosocial Impact of Assistive Devices Scale (PIADS) and the International Classification of Functioning, Disability, and Health (ICF).

METHODS

Six health professionals (two neurologists, one neuro-rehabilitation technician, two psychologists, one university professor of rehabilitation) created a technical board to discuss upon the PIADS-ICF linking. The standardized linking methodology was applied, and a Delphi technique was used to examine consensus.

RESULTS

Five Delphi sessions were required to reach 100% of consensus and to finalize the procedure. Of the 26 PIADS' items, 23 were linked to an ICF category: 9 items were endorsed at the 3rd ICF level, and 14 items at the 2nd ICF level. Two items were classified as "not defined" and 1 item as "not covered".

CONCLUSION

The study highlighted the conceptual connection between the PIADS and the ICF framework and set a bio-psychosocial standpoint by which accounting the role of assistive devices in rehabilitation settings.

Male-to-female transitions: Implications for occupational performance, health, and life satisfaction

BACKGROUND

People who undergo a gender transition process experience changes in different everyday occupations. These changes may impact their health and life satisfaction.

PURPOSE

This study examined the difference in the occupational performance history scales (occupational identity, competence, and settings) between male-to-female transgender women and cisgender women and the relation of these scales to health and life satisfaction.

METHOD

Twenty-two transgender women and 22 matched cisgender women completed a demographic questionnaire and three reliable measures in this cross-sectional study. Data were analyzed using a two-way analysis of variance and multiple linear regressions.

FINDINGS

The results indicate lower performance scores for the transgender women. In addition, occupational settings and group membership (transgender and cisgender groups) were found to be predictors of life satisfaction.

IMPLICATIONS

The present study supports the role of occupational therapy in promoting occupational identity and competence of transgender women and giving special attention to their social and physical environment.

Upper extremity neuro-rehabilitation through the use of power mobility

Power mobility is typically used as an accommodative form of assistive technology allowing individuals with impaired ambulation to remain mobile. While research has focused on the cognitive development and social benefits of power mobility for individuals with developmental disabilities, research is lacking on using this technology to rehabilitate physical dysfunction. Recent technology, such as robot-mediated neuro-rehabilitation, is proving effective in upper extremity rehabilitation, but lacks the movement feedback of power mobility. This article presents a case study of a client with cerebral palsy who experienced severe neural impairment following a motor vehicle accident. As a previous power mobility user, the client identified returning to using power mobility with the affected upper extremity as a key functional goal. This case study describes the series of steps that returned the client to independent mobility and increased upper extremity function.

Taking Control: An Exploratory Study of the Use of Tilt-in-Space Wheelchairs in Residential Care

Tilt-in-space (TIS) wheelchairs are common in residential care, but little empirical evidence exists regarding how they are used by residents and staff in these settings. As part of a larger study exploring the use of wheeled mobility in these facilities, we conducted a substudy to examine how TIS wheelchairs are used in practice and to explore the experiences of the residents who use them. We conducted a series of three participant observations and interviews with 6 residents or their family members and interviewed 10 staff. Our analysis identified taking control as the main overarching theme, subsuming two subthemes: promoting comfort and mobilizing to participate. Findings suggest that power TIS wheelchairs enable user control, whereas manual TIS wheelchairs promote staff control. These findings illustrate how TIS wheelchairs may enable or inhibit occupational engagement and suggest that vigilance is necessary to prevent their use as a restraint.

Upper Body-Based Power Wheelchair Control Interface for Individuals With Tetraplegia

Many power wheelchair control interfaces are not sufficient for individuals with severely limited upper limb mobility. The majority of controllers that do not rely on coordinated arm and hand movements provide users a limited vocabulary of commands and often do not take advantage of the user's residual motion. We developed a body-machine interface (BMI) that leverages the flexibility and customizability of redundant control by using high dimensional changes in shoulder kinematics to generate proportional control commands for a power wheelchair. In this study, three individuals with cervical spinal cord injuries were able to control a power wheelchair safely and accurately using only small shoulder movements. With the BMI, participants were able to achieve their desired trajectories and, after five sessions driving, were able to achieve smoothness that was similar to the smoothness with their current joystick. All participants were twice as slow using the BMI however improved with practice. Importantly, users were able to generalize training controlling a computer to driving a power wheelchair, and employed similar strategies when controlling both devices. Overall, this work suggests that the BMI can be an effective wheelchair control interface for individuals with high-level spinal cord injuries who have limited arm and hand control.

Considering Powered Mobility for Individuals with Stroke

Power mobility is an option that provides many disabled individuals with a means of locomotion. Stroke is the leading cause of long-term disability in this country. Unfortunately, there is currently a lack of published material that expounds on power mobility as it relates to clients who have had a stroke. We will present the benefits and considerations for choosing power wheelchairs for this client population. A brief review of seating and mobility evaluation and funding considerations is included with an emphasis on specific issues concerning stroke clients. Finally, a call for further research on this topic is presented.

Power mobility with collision avoidance for older adults: user, caregiver, and prescriber perspectives

Collision avoidance technology has the capacity to facilitate safer mobility among older power mobility users with physical, sensory, and cognitive impairments, thus enabling independence for more users. Little is known about consumers' perceptions of collision avoidance. This article draws on interviews (29 users, 5 caregivers, and 10 prescribers) to examine views on design and utilization of this technology. Data analysis identified three themes: "useful situations or contexts," "technology design issues and real-life application," and "appropriateness of collision avoidance technology for a variety of users." Findings support ongoing development of collision avoidance for older adult users. The majority of participants supported the technology and felt that it might benefit current users and users with visual impairments, but might be unsuitable for people with significant cognitive impairments. Some participants voiced concerns regarding the risk for injury with power mobility use and some identified situations where collision avoidance might be beneficial (driving backward, avoiding dynamic obstacles, negotiating outdoor barriers, and learning power mobility use). Design issues include the need for context awareness, reliability, and user interface specifications. User desire to maintain driving autonomy supports development of collaboratively controlled systems. This research lays the groundwork for future development by illustrating consumer requirements for this technology.

Development of an advanced mobile base for personal mobility and manipulation appliance generation II robotic wheelchair

BACKGROUND

This paper describes the development of a mobile base for the Personal Mobility and Manipulation Appliance Generation II (PerMMA Gen II robotic wheelchair), an obstacle-climbing wheelchair able to move in structured and unstructured environments, and to climb over curbs as high as 8 inches. The mechanical, electrical, and software systems of the mobile base are presented in detail, and similar devices such as the iBOT mobility system, TopChair, and 6X6 Explorer are described.

FINDINGS

The mobile base of PerMMA Gen II has two operating modes: "advanced driving mode" on flat and uneven terrain, and "automatic climbing mode" during stair climbing. The different operating modes are triggered either by local and dynamic conditions or by external commands from users. A step-climbing sequence, up to 0.2 m, is under development and to be evaluated via simulation. The mathematical model of the mobile base is introduced. A feedback and a feed-forward controller have been developed to maintain the posture of the passenger when driving over uneven surfaces or slopes. The effectiveness of the controller has been evaluated by simulation using the open dynamics engine tool.

CONCLUSION

Future work for PerMMA Gen II mobile base is implementation of the simulation and control on a real system and evaluation of the system via further experimental tests.

The Personal Mobility and Manipulation Appliance (PerMMA): a robotic wheelchair with advanced mobility and manipulation

The Personal Mobility and Manipulation Appliance (PerMMA) is a recently developed personal assistance robot developed to provide people with disabilities and older adults enhanced assistance in both mobility and manipulation, which are two fundamental components for independently activities of daily life performing, community participation, and quality of life. Technologies to assist with mobility and manipulation are among the most important tools for clinicians, end users and caregivers; however, there are currently few systems that provide practical and coordinated assistance with mobility and manipulation tasks. The PerMMA was not only developed and evaluated to provide users and caregivers enhanced mobility and manipulation options, but also as a clinical tool as well as research platform. The development and evaluation of PerMMA are presented in the paper.

Driving performance in a power wheelchair simulator

PURPOSE

A power wheelchair simulator can allow users to safely experience various driving tasks. For such training to be efficient, it is important that driving performance be equivalent to that in a real wheelchair. This study aimed at comparing driving performance in a real and in a simulated environment.

METHOD

Two groups of healthy young adults performed different driving tasks, either in a real power wheelchair or in a simulator. Smoothness of joystick control as well as the time necessary to complete each task were recorded and compared between the two groups. Driving strategies were analysed from video recordings. The sense of presence, of really being in the virtual environment, was assessed through a questionnaire.

RESULTS

Smoothness of joystick control was the same in the real and virtual groups. Task completion time was higher in the simulator for the more difficult tasks. Both groups showed similar strategies and difficulties. The simulator generated a good sense of presence, which is important for motivation.

CONCLUSIONS

Performance was very similar for power wheelchair driving in the simulator or in real life. Thus, the simulator could potentially be used to complement training of individuals who require a power wheelchair and use a regular joystick. [Box: see text].

Experiences with Using a Pushrim-Activated Power-Assisted Wheelchair for Community-Based Occupations: A Qualitative Exploration

Background. Occupational therapists strive to engage individuals in occupation and enhance community access through wheelchair prescription. Previous research with pushrim-activated, power-assisted wheelchairs identifies a reduction in the physical demands of manual wheelchair propulsion but limited evidence exists regarding user evaluation in context. Purpose. This study explored the experience of using a power-assisted wheelchair in the community. Methods. Eight individuals who used both a power and manual device participated in focus groups after trialing a power-assist wheelchair for three weeks. Data were analyzed using a qualitative description approach. Findings. Three themes emerged from our analysis: relative advantages and disadvantages; environmental factors that affect accessibility; and evaluation of mobility device. Implications. Participants perceived the power-assist as improving performance and accessibility compared with the manual wheelchair, increasing the potential scope of occupations and environments, but not replacing their power mobility device. Sufficient time for adjustment of both user and device was important.

Power mobility and socialization in preschool: follow-up case study of a child with cerebral palsy

PURPOSE

Our previous study found it feasible for a preschooler with cerebral palsy (CP) to use a power mobility device in his classroom but noted a lack of typical socialization. The purpose of this follow-up study was to determine the feasibility of providing mobility and socialization training for this child.

METHODS

Will, a 3-year-old with CP, 1 comparison peer, 2 preschool teachers, and 2 therapists were filmed daily during a training and posttraining phase. Adult-directed training was provided in the classroom by therapists and teachers during the training phase. Mobility and socialization measures were coded from video.

OUTCOMES

During training, Will demonstrated greater socialization but less mobility than the comparison peer. Posttraining, Will socialized less but was more mobile, though less mobile than the comparison peer.

DISCUSSION

Short-term, adult-directed power mobility and socialization training appear feasible for the preschool classroom. Important issues regarding socialization and power mobility are discussed.

Reliability and validity of the telephone administration of the wheelchair outcome measure (WhOM) for middle-aged and older users of power mobility devices

OBJECTIVE

To examine the measurement properties of the tele-phone administration of the Wheelchair Outcome Measure (WhOM).

SUBJECTS

Power mobility device users aged 50-89 years.

METHODS

Two independent cohorts were recruited: (i) a prospective cohort (n = 40) to estimate test-retest reliability and to determine the applicability of the telephone format, and (ii) a cross-sectional cohort to examine construct validity with 3 groups: (a) people waiting for a first power mobility device (n = 44); (b) initial users (n = 35; 1-6 months); and (c) long-term users (n = 39; 12-18 months).

RESULTS

The tool demonstrated good test-retest reliability (intraclass correlation coefficient 0.77-1.00), took 10.9 min (standard deviation = 5.2) to administer and was practical to use over the telephone. Validity testing showed moderate correlations with the Quebec User Evaluation of Satisfaction with Technology (rS = 0.36-0.45) and the Psychosocial Impact of Assistive Devices Scale (rS = 0.31-0.43). WhOM scores could discriminate non-users from users (wait-list vs initial users; wait-list vs long-term users, p < 0.001) and power wheelchair from scooter users (total WhOM scores, p < 0.05).

CONCLUSION

The WhOM is a stable, valid and applicable measure for telephone administration with older power mobility device users. It is moderately linked to satisfaction with the device and to the psychosocial impact of the device, and therefore complements rather than replaces those measures.

Prevalence and Predictors of Need for Seating Intervention and Mobility for Persons in Long-Term Care

A descriptive cross-sectional study was conducted to (a) determine the prevalence of need for wheel-chair seating intervention in two long-term care facilities in Vancouver, BC, (b) determine the extent of the residents' independent mobility within these facilities, and (c) explore the relationship between proper wheel-chair seating and positioning and independent mobility. The study population comprised 99 wheel-chair-using older adults. Four trained raters assessed need for seating intervention, using the Seating Identification Tool, and quantified extent and frequency of wheel-chair mobility, using the Nursing Home Life-Space Diameter. Results indicated that (a) there was a low need (overall 22%) for wheel-chair seating intervention in the two facilities, (b) half of the residents were independently mobile in their own rooms and on their units, but independent mobility decreased when greater distances needed to be travelled, and (c) the need for wheel-chair seating intervention was the only significant predictor of extent of independent mobility. These findings suggest that, where there are dedicated staff and equipment resources, the need for wheel-chair seating intervention can be minimized and independent mobility for long-term care residents maximized.

Power wheelchair prescription, utilization, satisfaction, and cost for patients with amyotrophic lateral sclerosis: preliminary data for evidence-based guidelines

OBJECTIVES

To determine the features most frequently selected in a power wheelchair (PWC), level of satisfaction with the selections, and how often the PWC features are used by patients diagnosed with amyotrophic lateral sclerosis (ALS)/motor neuron disease (MND).

DESIGN

Internally generated questionnaire.

SETTING

An ALS/Muscular Dystrophy Association center.

PARTICIPANTS

Convenience sample of current patients (N=45) of our clinic with ALS/MND who are PWC users (men, n=27; women, n=18; age range, 27-85 y).

INTERVENTION

Self-administered survey.

MAIN OUTCOME MEASURE

Thirty-two patients completed a 31-question survey investigating patients' patterns of selection, satisfaction, and frequency of PWC use; technical and psychometric influences; and other aspects of decision-making processes that patients experience before, during, and after acquiring a PWC.

RESULTS

Ninety percent of respondents received their evaluations at a multidisciplinary ALS clinic, 1 via the Department of Veterans Affairs, and 1 was unknown. Sixty-six percent of patients thought the chair evaluation was timed correctly, and 19% wished they had started sooner. Forty-five percent of people were able to walk a few steps, and 55% were able to stand when their chairs arrived. When they first received the chair, 79% were satisfied with the overall comfort of the chair, and 86% were satisfied with the ease of use; currently, 69% are satisfied with the overall comfort, and 72% are satisfied with ease of use. There was a statistically significant difference in how patients used their wheelchair features initially and currently in terms of seat elevate and attendant control, but not tilt, recline, and elevating leg rests. The average cost for the power chairs was $26,404 (range, $19,376-$34,311), and the average cost a month is $917. Overall, 88% of respondents said they would get the same type of chair with the same features again, and 81% felt that the chair was a good value for the cost.

CONCLUSIONS

We obtained first-hand knowledge from 32 patients with ALS/MND who are current PWC users on their use and satisfaction with their PWCs from initial to current use. Based on this survey, patients with ALS/MND seen for their wheelchair evaluation with experienced clinicians exhibit high use and satisfaction with their PWCs.

Participation in community-based activities of daily living: comparison of a pushrim-activated, power-assisted wheelchair and a power wheelchair

PURPOSE

The purpose of this study was to evaluate pushrim-activated, power-assisted wheelchair (PPW) performance among dual-users in their natural environment to determine whether the PPW would serve as a satisfactory alternative to a power wheelchair for community-based activities.

METHODS

A concurrent mixed methods research design using a cross-over trial was used. The outcome measures used were number of hours reported using the different wheelchairs, Quebec User Evaluation of Satisfaction with assistive Technology (QUEST), Functioning Everyday with a Wheelchair (FEW), Psychosocial Impact of Assistive Devices Scale (PIADS) and Canadian Occupational Performance Measure (COPM).

RESULTS

The number of hours spent participating in self-identified activities was not significantly different. Only the Self-Esteem subscale of the PIADS identified a statistically significant difference between the PPW and power wheelchair conditions (p = 0.016). A clinically important difference for Performance and Satisfaction was suggested by the COPM, in favour of the power wheelchair.

CONCLUSIONS

Additional knowledge was gained about the benefits of PPW technology. Participants were able to continue participating independently in their self-identified community activities using the PPW, and identified comparable ratings of satisfaction and performance with the PPW and the power wheelchair. For some individuals requiring power mobility, the PPW may provide an alternative to the power wheelchair.

Occupation and meaning in the lives of women with chronic pain

The aim of this study was to examine how women experience occupations as they live with chronic pain and more specifically to gain detailed knowledge regarding the meaning of important occupations in their life. The article is based on an analysis of 17 narratives based on an Occupational Performance History Interview. Participants were interviewed as part of their occupational therapy assessment at Orton Rehabilitation. The narratives were analysed in order to identify the experiences of doing occupations in everyday life. When interpreting their problems in and solution for doing occupations women in this study used four basic metaphors: (1) moving forward, (2) slowing down, (3) fighting and (4) standing still. The tone of the narratives varied from hopeful to hopeless and from fearful to frustrated. Each of these four types of narratives differed in: (a) the tone of the narrative, (b) the meaning ascribed to occupation, (c) how others are viewed in relation to one's doing, and (d) how the future is envisioned. The experience of occupation in the lives of women with chronic pain is heterogeneous and depends on the underlying meaning of the narrative used to experience and interpret occupational life.

The effect of an outdoor powered wheelchair on activity and participation in users with stroke

PURPOSE

Persons with disabilities after stroke are often restricted in activity and participation in society because of mobility limitations. An outdoor powered wheelchair may be one among other interventions in a rehabilitation programme. The aim of this study was to describe and compare activity limitations and participation restrictions in persons with stroke from their own perspective, before and after using an outdoor powered wheelchair.

METHOD

At baseline and follow-up two instruments were used: Individually Prioritized Problem Assessment (IPPA) and World Health Organization Disability Assessment Schedule II (WHODAS II).

RESULTS

The results indicated that the powered wheelchair has a great positive effect on activity and participation assessed with IPPA. The results also showed that most of the participants' problems could be categorised as belonging to the domain of 'Community, social and civic life' according to the International Classification of Functioning, Disability and Health (ICF), and the effect size in this domain was large (2.4) after the participants had used the wheelchair.

CONCLUSION

An outdoor powered wheelchair is an essential device for persons with disability after stroke with regard to overcoming activity limitations and participation restrictions in everyday life.

Muscular effort in multiple sclerosis patients during powered wheelchair manoeuvres

BACKGROUND

This study applied EMG analysis methods to identify muscle group activity profiles and potential overload risks in powered wheelchair use.

METHODS

We quantified muscle effort and fatigue using EMG analysis methods during powered wheelchair manoeuvres by 10 multiple sclerosis patients. Video recordings of the different sub-tasks were related to information on surface EMG amplitude (rectified EMG) and spectral information (Median frequency) from M. trapezius, M. deltoideus (pars medius), M. deltoideus (pars anterior), M. pectoralis, M. biceps, M. triceps, wrist extensors and flexors, using Joint Analysis of EMG Spectrum and Amplitude (JASA analysis).

FINDINGS

Task durations and subjective data indicated that tasks requiring finer motor control took longer and were perceived as more difficult. Kinesiological functions of all muscle groups identified forward steering to be associated with activation of M. deltoideus (pars anterior), M. pectoralis, M. trapezius and M. deltoideus (pars medius); backwards steering with predominant activation of M. deltoideus (pars medius), M. biceps brachii and wrist flexors; left steering with maximal activation of M. biceps and wrist flexors, and right steering with maximal activation of M. triceps and wrist extensors. These profiles were confirmed in analysis of the functional tasks. JASA analysis documented muscle fatigue in the wrist extensors, whereas increased activation was found in M. trapezius, M. deltoideus (pars anterior) and wrist flexors.

INTERPRETATION

EMG based kinesiological analysis gives insight in muscle activity and fatigue during powered wheelchair manoeuvres.